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  • Question 1 - A 1 day old baby girl is born with severe respiratory compromise. She...

    Correct

    • A 1 day old baby girl is born with severe respiratory compromise. She is seen to have a scaphoid abdomen and an absent apex beat. Which anomaly does this baby have?

      Your Answer: Bochdalek hernia

      Explanation:

      Answer: Bochdalek herniaA Bochdalek hernia is one of two forms of a congenital diaphragmatic hernia, the other form being Morgagni hernia. A Bochdalek hernia is a congenital abnormality in which an opening exists in the infant’s diaphragm, allowing normally intra-abdominal organs (particularly the stomach and intestines) to protrude into the thoracic cavity. In the majority of patients, the affected lung will be deformed, and the resulting lung compression can be life-threatening. Bochdalek hernias occur more commonly on the posterior left side (85%, versus right side 15%).In normal Bochdalek hernia cases, the symptoms are often observable simultaneously with the baby’s birth. A few of the symptoms of a Bochdalek Hernia include difficulty breathing, fast respiration and increased heart rate. Also, if the baby appears to have cyanosis (blue-tinted skin) this can also be a sign. Another way to differentiate a healthy baby from a baby with Bochdalek Hernia, is to look at the chest immediately after birth. If the baby has a Bochdalek Hernia it may appear that one side of the chest cavity is larger than the other and or the abdomen seems to be scaphoid (caved in).Situs inversus (also called situs transversus or oppositus) is a congenital condition in which the major visceral organs are reversed or mirrored from their normal positions. The normal arrangement of internal organs is known as situs solitus while situs inversus is generally the mirror image of situs solitus. Although cardiac problems are more common than in the general population, most people with situs inversus have no medical symptoms or complications resulting from the condition, and until the advent of modern medicine it was usually undiagnosed. In the absence of congenital heart defects, individuals with situs inversus are homeostatically normal, and can live standard healthy lives, without any complications related to their medical condition. There is a 5–10% prevalence of congenital heart disease in individuals with situs inversus totalis, most commonly transposition of the great vessels. The incidence of congenital heart disease is 95% in situs inversus with levocardia.Cystic fibrosis is a progressive, genetic disease that causes persistent lung infections and limits the ability to breathe over time. In people with CF, mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene cause the CFTR protein to become dysfunctional. When the protein is not working correctly, it’s unable to help move chloride — a component of salt — to the cell surface. Without the chloride to attract water to the cell surface, the mucus in various organs becomes thick and sticky. In the lungs, the mucus clogs the airways and traps germs, like bacteria, leading to infections, inflammation, respiratory failure, and other complications. Necrotizing enterocolitis (NEC) is a medical condition where a portion of the bowel dies. It typically occurs in new-borns that are either premature or otherwise unwell. Symptoms may include poor feeding, bloating, decreased activity, blood in the stool, or vomiting of bile.The exact cause is unclear. Risk factors include congenital heart disease, birth asphyxia, exchange transfusion, and premature rupture of membranes. The underlying mechanism is believed to involve a combination of poor blood flow and infection of the intestines. Diagnosis is based on symptoms and confirmed with medical imaging.Morgagni hernias are one of the congenital diaphragmatic hernias (CDH), and is characterized by herniation through the foramen of Morgagni. When compared to Bochdalek hernias, Morgagni hernias are:-anterior-more often right-sided (,90%)-small-rare (,2% of CDH)-at low risk of prolapseOnly ,30% of patients are symptomatic. New-borns may present with respiratory distress at birth similar to a Bochdalek hernia. Additionally, recurrent chest infections and gastrointestinal symptoms have been reported in those with previously undiagnosed Morgagni hernia.The image of the transverse colon is herniated into the thoracic cavity, through a mid line defect and this indicates that it is a Morgagni hernia since the foramen of a Morgagni hernia occurs in the anterior midline through the sternocostal hiatus of the diaphragm, with 90% of cases occurring on the right side.Clinical manifestations of congenital diaphragmatic hernia (CDH) include the following:Early diagnosis – Right-side heart| decreased breath sounds on the affected side| scaphoid abdomen| bowel sounds in the thorax, respiratory distress, and/or cyanosis on auscultation| CDH can often be diagnosed in utero with ultrasonography (US), magnetic resonance imaging (MRI), or bothLate diagnosis – Chest mass on chest radiography, gastric volvulus, splenic volvulus, or large-bowel obstructionCongenital hernias (neonatal onset) – Respiratory distress and/or cyanosis occurs within the first 24 hours of life| CDH may not be diagnosed for several years if the defect is small enough that it does not cause significant pulmonary dysfunctionCongenital hernias (childhood or adult onset) – Obstructive symptoms from protrusion of the colon, chest pain, tightness or fullness the in chest, sepsis following strangulation or perforation, and many respiratory symptoms occur.

    • This question is part of the following fields:

      • Paediatric Surgery
      14.7
      Seconds
  • Question 2 - Which of the given choices accurately defines perinatal mortality rate? ...

    Correct

    • Which of the given choices accurately defines perinatal mortality rate?

      Your Answer: Number of stillbirths and deaths within 7 days of life divided by 1000 births

      Explanation:

      The perinatal mortality rate is defined as the number of perinatal deaths per 1000 total births. Perinatal death includes the death of a live-born neonate within 7-days of life (early neonatal death) and the death of a fetus ≥ 22 weeks of gestation (stillbirth). Hence, the perinatal mortality rate is calculated by dividing the number of still births+ the number of early neonatal deaths by 1000 births.

    • This question is part of the following fields:

      • Neonatology
      20
      Seconds
  • Question 3 - A 13 month old baby was taken to the hospital after his father...

    Correct

    • A 13 month old baby was taken to the hospital after his father saw that he had periorbital oedema for two days. He is seen by the doctor and noted to have facial oedema and a tender distended abdomen. His temperature is 39.1 and his blood pressure is 91/46 mmHg. There is also clinical evidence of poor peripheral perfusion. What is the diagnosis?

      Your Answer: Spontaneous bacterial peritonitis

      Explanation:

      Answer: Spontaneous bacterial peritonitisThe presence of periorbital and facial oedema with normal blood pressure in this toddler indicates that he has nephrotic syndrome. Nephrotic syndrome can be associated with a series of complications that can affect an individual’s health and quality of life:Spontaneous bacterial peritonitis can develop where there is ascites present. This is a frequent development in children but very rarely found in adults.Spontaneous bacterial peritonitis (SBP) is the development of a bacterial infection in the peritoneum, despite the absence of an obvious source for the infection. It is specifically an infection of the ascitic fluid – an increased volume of peritoneal fluid. Ascites is most commonly a complication of cirrhosis of the liver. It can also occur in patients with nephrotic syndrome. SBP has a high mortality rate.The diagnosis of SBP requires paracentesis, a sampling of the peritoneal fluid taken from the peritoneal cavity. If the fluid contains large numbers of white blood cells known as neutrophils (>250 cells/µL), infection is confirmed and antibiotics will be given, without waiting for culture results. In addition to antibiotics, infusions of albumin are usually administered.Signs and symptoms of spontaneous bacterial peritonitis (SBP) include fevers, chills, nausea, vomiting, abdominal pain and tenderness, general malaise, altered mental status, and worsening ascites. Thirteen percent of patients have no signs or symptoms. In cases of acute or chronic liver failure SBP is one of the main triggers for hepatic encephalopathy, and where there is no other clear causal indication for this, SBP may be suspected.These symptoms can also be the same for a spontaneous fungal peritonitis (SFP) and therefore make a differentiation difficult. Delay of diagnosis can delay antifungal treatment and lead to a higher mortality rate.

    • This question is part of the following fields:

      • Paediatric Surgery
      24.6
      Seconds
  • Question 4 - Intracellular shifting of hydrogen ions can generate a metabolic alkalosis. In which of...

    Correct

    • Intracellular shifting of hydrogen ions can generate a metabolic alkalosis. In which of the following conditions is metabolic alkalosis caused by this mechanism ?

      Your Answer: Hypokalaemia

      Explanation:

      Metabolic alkalosis is characterized by a primary increase in the concentration of serum bicarbonate ions. This may occur as a consequence of a loss of hydrogen ions or a gain in bicarbonate. Hydrogen ions may be lost through the kidneys or the GI tract, as for example during vomiting, nasogastric suction or use of diuretics. Intracellular shifting of hydrogen ions develops mainly during hypokalaemia to maintain neutrality. Gain in bicarbonate ions may develop during administration of sodium bicarbonate in high amounts or in amounts that exceed the capacity of excretion of the kidneys, as seen in renal failure. Fluid losses may be another cause of metabolic alkalosis, causing the reduction of extracellular fluid volume.

    • This question is part of the following fields:

      • Fluid And Electrolytes
      26
      Seconds
  • Question 5 - A 16-year-old girl is brought to the emergency by her parents who describe...

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    • A 16-year-old girl is brought to the emergency by her parents who describe what seems to be an episode of generalized tonic-clonic seizures, after she came home from an all-night party around 6 am. Her father has epilepsy and one of her cousins sometimes has episodes of blank spells. Neurological examination shows no abnormalities. Which of the following diagnosis is most likely in this case?

      Your Answer: Juvenile myoclonic epilepsy

      Explanation:

      In people with juvenile myoclonic epilepsy, symptoms can be brought on by: -Sleep deprivation-Psychological stress-Alcohol and drug use-Noncompliance of medication-Flickering lights such as strobe lights -Menses-Time of day – usually mornings

    • This question is part of the following fields:

      • Neurology And Neurodisability
      44.7
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  • Question 6 - A 16-year-old girl presents with bruise-like painful lumps on her lower legs after...

    Correct

    • A 16-year-old girl presents with bruise-like painful lumps on her lower legs after a sore throat. Which of the following is expected in her case?

      Your Answer: The condition may take 6-12 weeks to resolve

      Explanation:

      Erythema nodosum (EN) is an acute, nodular, erythematous eruption that usually is limited to the extensor aspects of the lower legs. It is a delayed hypersensitivity reaction to a variety of antigens| circulating immune complexes have not been found in idiopathic or uncomplicated cases but may be demonstrated in patients with inflammatory bowel disease.Currently, the most common cause of erythema nodosum is a streptococcal infection in children and streptococcal infection and sarcoidosis in adultsIn most patients, erythema nodosum is a self-limited disease and requires only symptomatic relief using nonsteroidal anti-inflammatory drugs (NSAIDs), cool wet compresses, elevation, and bed rest.

    • This question is part of the following fields:

      • Dermatology
      11.8
      Seconds
  • Question 7 - A 17 year old female presented with irregular menstrual cycles for 4 months....

    Incorrect

    • A 17 year old female presented with irregular menstrual cycles for 4 months. On examination her weight was 85 kg and height was 145 cm. She was not on any medications. Which of the following is the most appropriate investigation to arrive at a diagnosis?

      Your Answer: Serum FSH/LH

      Correct Answer: Pelvic ultrasound

      Explanation:

      Oligomenorrhoea and BMI of 40.4 is suggestive of Polycystic ovary syndrome (PCOS). To diagnose PCOS 2 out of following 3 criteria should be present : oligo/anovulation, hyperandrogenism, clinical (hirsutism or less commonly male pattern alopecia) or biochemical (raised FAI or free testosterone) and polycystic ovaries on ultrasound.

    • This question is part of the following fields:

      • Genitourinary
      32.3
      Seconds
  • Question 8 - Leukocoria does NOT occur in association with which of the following conditions? ...

    Correct

    • Leukocoria does NOT occur in association with which of the following conditions?

      Your Answer: Gillespie syndrome

      Explanation:

      Leukocoria is an abnormal red reflex in which the pupil appears white. It represents various abnormalities of the visual media and is one of the primary signs of retinoblastoma. Other possible causes of leukocoria include congenital cataracts, toxocariasis, Norrie disease, retinopathy of prematurity, and Coat’s disease. Gillespie syndrome is an autosomal recessive condition characterized by congenital hypotonia, multiple ocular defects, hypoplasia of the cerebellum, and vertebral deformities. The ocular defects consist of aniridia, photophobia, reduced visual acuity, and the inability of the pupillary sphincter to contract. Leukocoria is not associated with this syndrome.

    • This question is part of the following fields:

      • Ophthalmology
      130.6
      Seconds
  • Question 9 - A first-time mother is concerned about the development of her 2-month-old baby.Which one...

    Correct

    • A first-time mother is concerned about the development of her 2-month-old baby.Which one of the following statements is true regarding developmental milestones at the age of 2 months?

      Your Answer: The infant is not expected to mirror facial expressions like smiling

      Explanation:

      Developmental milestones at the age of 2 months are as follows:Social and Emotional:- Begins to smile at people – Can briefly calm herself (may bring hands to mouth and suck on hand)- Tries to look at the parents Language/Communication:- Coos, makes gurgling sounds – Turns head toward sounds Cognitive (learning, thinking, problem-solving):- Pays attention to faces – Begins to follow things with eyes and recognize people at a distance – Begins to act bored (cries, fussy) if an activity doesn’t changeMovement/Physical Development:- Can hold head up and begins to push up when lying on tummy – Makes smoother movements with arms and legs

    • This question is part of the following fields:

      • Child Development
      41.6
      Seconds
  • Question 10 - A 15-year-old girl who has undergone a recent excision of the left submandibular...

    Incorrect

    • A 15-year-old girl who has undergone a recent excision of the left submandibular gland presents to the follow-up clinic with complaints of tongue weakness on the ipsilateral side.What is the nerve that is most likely to be damaged?

      Your Answer: Lingual nerve

      Correct Answer: Hypoglossal nerve

      Explanation:

      The presenting features and the surgical site provided in the clinical scenario are highly suggestive of ipsilateral hypoglossal nerve injury.Note:Three cranial nerves may be injured during submandibular gland excision.- Marginal mandibular branch of the facial nerve- Lingual nerve- Hypoglossal nerveHypoglossal nerve damage may result in the paralysis of the ipsilateral aspect of the tongue. The nerve itself lies deep to the capsule surrounding the gland and should not be injured during an intracapsular dissection. The lingual nerve is probably at higher risk of injury. However, the effects of lingual nerve injury are predominantly sensory rather than motor.Thus, the most appropriate answer is the hypoglossal nerve.

    • This question is part of the following fields:

      • ENT
      50.8
      Seconds
  • Question 11 - An infant born at 34 weeks was kept in the incubator for almost...

    Correct

    • An infant born at 34 weeks was kept in the incubator for almost a month. Physical examination revealed a heart murmur, which however was not present at discharge. What is the most probable cause of this murmur?

      Your Answer: PDA

      Explanation:

      PDA is particularly common in premature babies and it is managed by indomethacin administration. However, if PDA is not the only defect, prostaglandin E1 can be administered in order to keep the ductus open until the surgery takes place.

    • This question is part of the following fields:

      • Cardiovascular
      10.8
      Seconds
  • Question 12 - This equation links lung function measurement to height: Lung function = 2.3 +...

    Correct

    • This equation links lung function measurement to height: Lung function = 2.3 + (1.5 × height), R = 0.75Which of the following statements is true?

      Your Answer: Taller individuals have higher lung functions

      Explanation:

      The equation, lung function = 3.2 + (1.7 x height) is linear, but this does not necessarily mean that the relationship itself is linear. The equation is able to predict that taller individuals are more likely to have greater lung functions. No information is given on whether the coefficients and the R value are statistically significant.

    • This question is part of the following fields:

      • Epidemiology And Statistics
      9.3
      Seconds
  • Question 13 - The ophthalmic branch exits the skull from which of the following foramina? ...

    Correct

    • The ophthalmic branch exits the skull from which of the following foramina?

      Your Answer: Superior orbital fissure

      Explanation:

      The trigeminal nerve is responsible for the sensory innervation of the head, and the muscles of mastication. The nerve is divided into three branches, the ophthalmic nerve (V1) the mandibular nerve (V2) and the maxillary nerve (V3) which all exit the skull through their respective foramina. An easy way to remember these foramina is with the following mnemonic:Standing Room Only, for V1-V3 respectivelyV1- Superior orbital FissureV2- foramen RotundumV3 foramen Ovale

    • This question is part of the following fields:

      • Neurology And Neurodisability
      13.6
      Seconds
  • Question 14 - Normal male puberty is characterized by which of the following features? ...

    Incorrect

    • Normal male puberty is characterized by which of the following features?

      Your Answer: Adrenarche refers to the increase in testosterone, causing secondary sexual characteristics to develop

      Correct Answer: Thinning and reddening of scrotal skin is typical of Tanner stage 2

      Explanation:

      Puberty is a period of transitioning into adulthood by developing full reproductive potential by undergoing drastic physiological and psychological changes. For boys, it occurs around 9-16 years of age typically. The process of pubertal changes is usually divided into stages called tanner’s stages. The physiologic changes of puberty are initiated by the release of gonadotropin-releasing hormones from the hypothalamus, which then interact with numerous endogenous and environmental stimuli to bring about the physical pubertal features. Tanner stage 2 in boys is characterized by the thinning and reddening of the scrotal skin.The growth spurt of around 9cm per year is expected in boys, at the peak velocity.Testicular enlargement of >3cm commences puberty.Pubarche, in the absence of other secondary sexual characteristics, is pathological.Adrenarche is the increase in the secretion of adrenal androgens, occurring prior to increased gonadotropin release.

    • This question is part of the following fields:

      • Endocrinology
      36.2
      Seconds
  • Question 15 - A 5 year old girl experiences recurrent abdominal pain that has recently localised...

    Correct

    • A 5 year old girl experiences recurrent abdominal pain that has recently localised in the epigastric region. She occasionally vomits as well. Doctors perform an upper endoscopy and a CLO test which turn out positive. A Helicobacter pylori infection is established. What is the initial most appropriate treatment?

      Your Answer: Amoxicillin, clarithromycin and omeprazole for 1 week

      Explanation:

      European guidelines suggest that triple therapy for 1 week is acceptable and sufficient for H. pylori eradication. Although triple therapy for 2 weeks might have higher therapeutic rates, it also carries a higher risk of side effects. Triple therapy includes amoxicillin and clarithromycin and a proton-pump inhibitor, usually omeprazole.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      59.4
      Seconds
  • Question 16 - Which of the given statements is correct regarding carbon monoxide? ...

    Correct

    • Which of the given statements is correct regarding carbon monoxide?

      Your Answer: CO combines with haemoglobin to form carboxyhaemoglobin

      Explanation:

      Carbon monoxide is a colourless gas, which is toxic to animals. It has a high affinity for haemoglobin (around 250 times greater than oxygen). It combines with haemoglobin forming carboxyhaemoglobin, which decreases the oxygen-carrying capacity of the blood, leading to a left-shift in the oxygen-dissociation curve. CO is produced endogenously in limited amounts (0.4ml per hour), but the toxic levels are higher.

    • This question is part of the following fields:

      • Haematology And Oncology
      17.9
      Seconds
  • Question 17 - A 19-year-old girl has presented with symptoms suggestive of anorexia nervosa. Following a...

    Correct

    • A 19-year-old girl has presented with symptoms suggestive of anorexia nervosa. Following a consult with a dietician, a decision was made to supplement her nutrition through total parenteral nutrition (TPN) via a central line. Which of the following is a common complication associated with TPN?

      Your Answer: Deranged liver function tests

      Explanation:

      Total parenteral nutrition (TPN) frequently causes derangement of liver function in children. Other options:- While line sepsis and thromboembolism are recognised complications of TPN, they do not occur frequently. – A child who is on TPN will require regular blood tests because of the potential for the development of electrolyte abnormalities. Need to observe their liver function, in order to provide TPN more accurately.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      21.4
      Seconds
  • Question 18 - An 12 year old boy presents with a 2 day history of a...

    Correct

    • An 12 year old boy presents with a 2 day history of a tree climbing accident in which a small branch gave way, leaving him suspended by one arm. He can move his arm into any position but is unable to use his hand effectively.Which of the following structures has he most likely damaged in the accident?

      Your Answer: The T1 nerve root

      Explanation:

      The boy is most likely to have sustained an injury to his brachial plexus as a result of upward traction of his arm for an extended period of time. We can rule out the topmost nerve roots of the brachial plexus, C6 and C7 as these supply the larger muscles of the arm responsible for moving the shoulder, the elbow and the wrist. The anatomical structure affected is therefore the T1 nerve root which is responsible for movement of the muscles in the hand. This type of injury is called a Klumpke’s Palsy, which is the result of a hyper-abducted trauma to the arm, damaging the C8 and T1 nerve roots. While the radial and ulnar nerve also innervate the hand, the history given points to Klumpke’s palsy as the best explanation for this mechanism of injury.

    • This question is part of the following fields:

      • Anatomy
      29
      Seconds
  • Question 19 - A 14-year-old boy was admitted by the Child and Adolescent Mental Health Services...

    Correct

    • A 14-year-old boy was admitted by the Child and Adolescent Mental Health Services (CAMHS) team. He was brought to the hospital with symptoms of psychosis. He now complains of abdominal pain with abdominal examination revealing hepatomegaly. Which of the following investigations will most likely confirm the diagnosis?

      Your Answer: Serum ceruloplasmin

      Explanation:

      Based on the clinical scenario, the most probable diagnosis is Wilson’s disease. Elevated serum ceruloplasmin levels can confirm the diagnosis.Serum ceruloplasminWilson’s disease causes reduced binding of copper to ceruloplasmin, which is the body’s primary copper carrying protein. As a result, copper cannot be excreted into the bile. Copper, therefore, builds up in the liver, causing toxicity and is secreted into the bloodstream unbound to ceruloplasmin. This free copper is deposited around the body, especially the brain, eyes and kidneys. The genetic defect means that ceruloplasmin is not released into the bloodstream| therefore, ceruloplasmin is low in Wilson’s disease.Other options:- Microscopic evaluation of the hair is performed in Menke’s disease, which is a disease of copper absorption leading to copper deficiency. This causes kinky hair, failure to thrive and neurological symptoms (such as hypotonia).- Magnetic resonance imaging (MRI) scan of the brain: An MRI brain may show features of Wilson’s disease (especially in the basal ganglia), but it is not diagnostic.- Serum ferritin: Serum ferritin becomes high in haemochromatosis. This classically causes cirrhosis, bronzing of the skin, cardiomyopathy and diabetes.- Ultrasound scan of the abdomen: While it is useful in any case of hepatomegaly| it is not going to provide the diagnosis in this case.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      73.2
      Seconds
  • Question 20 - A 14-month-old boy is brought to the paediatric clinic by his mother with...

    Correct

    • A 14-month-old boy is brought to the paediatric clinic by his mother with complaints of vomiting, abdominal pain, and rectal bleeding. On examination, he is found to be dehydrated, and a palpable abdominal mass was felt. A Meckel's scan proved to be negative. However, the ultrasound scan did reveal a target sign.What is the most probable cause of the patient's complaints?

      Your Answer: Intussusception

      Explanation:

      The most probable cause for the patient’s symptoms is intussusception.Intussusception is a condition in which part of the intestine folds into the section next to it. It most commonly involves the small bowel and rarely the large bowel. Intussusception doesn’t usually require surgical correction. 80% of cases can be both confirmed and reduced using barium, water-soluble or air-contrast enema. However, up to 10% of cases can experience recurrence within 24 hours after reduction, warranting close monitoring during this period.Other options:- Enteric duplication: a duplication cyst could give all these features, although it may contain sufficient gastric epithelium to produce a positive Meckel’s scan. However, this is comparatively rare. – Meckel’s diverticulum: Scintigraphy has poor sensitivity making the possibility of a bleed from a Meckel’s diverticulum a genuine differential for this patient. However, considering the presence of features of bowel obstruction in the patient, a Meckel’s diverticulum bleeding and obstructing at the same time would be a rare phenomenon. – Midgut volvulus: It is also a plausible differential in this patient. However, for the given age group, a midgut volvulus is relatively uncommon compared to intussusception. – Acute appendicitis: While it is true that appendicitis can present acutely with a palpable mass and bowel obstruction, it rarely presents with rectal bleeding.

    • This question is part of the following fields:

      • Paediatric Surgery
      28
      Seconds
  • Question 21 - A 7 year old boy who never had a history of incontinence presented...

    Incorrect

    • A 7 year old boy who never had a history of incontinence presented with bed-wetting. Which of the following is the best approach?

      Your Answer: Desmopressin

      Correct Answer: Sleep alarms

      Explanation:

      As this boy didn’t have a previous history, a structural abnormality is unlikely. Parents should be asked to take the child to the bathroom to void before bedtime. Either alarm therapy or pharmacologic therapy should be considered if the above method doesn’t work after 3 months. From the above 2 therapies, neither one is superior than the other, so alarm therapy should be tried first.

    • This question is part of the following fields:

      • Behavioural Medicine And Psychiatry
      16.4
      Seconds
  • Question 22 - In a trial for a new treatment of lung disease, a traditional regime...

    Correct

    • In a trial for a new treatment of lung disease, a traditional regime was given to 130 patients, 30 of whom died, while the new treatment was given to 125 patients, 20 of whom died. 

Which of the following tools will be useful in calculating whether the above results are due to chance?

      Your Answer: Chi-squared analysis

      Explanation:

      The Chi squared test is used to find the relationship between two variables, determining whether they are not independent of each other. This test of statistical significance allows you to determine the degree of confidence with which you can accept or reject the null hypothesis. The student t test compares the significant differences in data means, while rank correlation, linear regression and the correlation coefficient all help to measure the linear relationship between variables.

    • This question is part of the following fields:

      • Epidemiology And Statistics
      40.1
      Seconds
  • Question 23 - A 14-year-old boy presents with a rash on his buttocks and extensor surfaces...

    Correct

    • A 14-year-old boy presents with a rash on his buttocks and extensor surfaces following a sore throat. What is the most probable diagnosis?

      Your Answer: Henoch-Schönlein purpura (HSP)

      Explanation:

      Henoch-Schönlein purpura (HSP) rashes are commonly found on the legs, feet, and buttocks while Immune thrombocytopenia (ITP) rashes manifest predominantly on the lower legs. HSP happens following a sore throat while ITP usually happens following an URTI or Flu. HSP is an inflammation of a blood vessel (vasculitis) while ITP is immune mediated insufficiency of platelets.

    • This question is part of the following fields:

      • Dermatology
      11.4
      Seconds
  • Question 24 - A 6 year old boy presents with a history of repeated respiratory and...

    Correct

    • A 6 year old boy presents with a history of repeated respiratory and gastro-intestinal infections since birth. His birth was, however, uncomplicated. His mother claims that he's not growing as he should for his age. What is the most likely diagnosis?

      Your Answer: Cystic fibrosis

      Explanation:

      Cystic fibrosis is a genetic disease that interferes with the normal development of the child. It manifests with recurrent episodes of pneumonia accompanied by coughing, wheezing and dyspnoea. The appetite is normal but weight gain seems difficult. This condition also affects bowel habits with repeated gastrointestinal infections. The gold standard for the diagnosis is considered the sweat test which reveals abnormally high levels of Cl-.

    • This question is part of the following fields:

      • Respiratory
      25.8
      Seconds
  • Question 25 - A 6 month old infant has developed jaundice from breast milk. He is...

    Incorrect

    • A 6 month old infant has developed jaundice from breast milk. He is otherwise healthy with no signs of dehydration. His LFTs will most likely show which of the following pattern?

      Your Answer: Total bilirubin: 40, conjugated bilirubin < 5%

      Correct Answer:

      Explanation:

      Breast milk jaundice is a type of jaundice associated with breast-feeding. It typically occurs one week after birth. The condition can sometimes last up to 12 weeks, but it rarely causes complications in healthy, breast-fed infants. The exact cause of breast milk jaundice isn’t known. However, it may be linked to a substance in the breast milk that prevents certain proteins in the infant’s liver from breaking down bilirubin. The condition may also run in families. Breast milk jaundice is rare, affecting less than 3 percent of infants. When it does occur, it usually doesn’t cause any problems and eventually goes away on its own. It’s safe to continue breast-feeding.

    • This question is part of the following fields:

      • Haematology And Oncology
      17.9
      Seconds
  • Question 26 - A 2-week-old infant is suffering from hydrocephalus that has developed secondary to congenital...

    Correct

    • A 2-week-old infant is suffering from hydrocephalus that has developed secondary to congenital spina bifida. Where in the brain is the CSF formed?

      Your Answer: Choroid plexuses

      Explanation:

      CSF is produced mainly by a structure called the choroid plexus in the lateral, third and fourth ventricles. CSF flows from the lateral ventricle to the third ventricle through the interventricular foramen (also called the foramen of Monro). The third ventricle and fourth ventricle are connected to each other by the cerebral aqueduct (also called the Aqueduct of Sylvius). CSF then flows into the subarachnoid space through the foramina of Luschka (there are two of these) and the foramen of Magendie (only one of these).Absorption of the CSF into the blood stream takes place in the superior sagittal sinus through structures called arachnoid villi . When the CSF pressure is greater than the venous pressure, CSF will flow into the blood stream.

    • This question is part of the following fields:

      • Neurology And Neurodisability
      16.8
      Seconds
  • Question 27 - Which of the given clinical findings is the hallmark of Trisomy 21? ...

    Correct

    • Which of the given clinical findings is the hallmark of Trisomy 21?

      Your Answer: Hypotonia

      Explanation:

      Trisomy 21 (Down’s syndrome)is a genetic disorder characterized by the presence of an extra copy of chromosome 21 in all the body cells, mostly due to non-disjunction during gametogenesis. Robertsonian translocation occurs only in about 2-4% of the cases. A variety of clinical features are found in trisomy 21 due to multi-system involvement but the hallmark is hypotonia, which is present in almost all the cases of trisomy 21. Different types of leukemias are also found in association with down’s syndrome, but they are not the hallmark. Atlantoaxial subluxation is secondary to hypotonia, which induces joint and ligament laxity. Other clinical findings are hypothyroidism, Alzheimer’s disease, Hirschsprung’s disease, and pulmonary hypertension.

    • This question is part of the following fields:

      • Genetics And Dysmorphology
      8.3
      Seconds
  • Question 28 - In one of the following situations a child should be investigated further if...

    Correct

    • In one of the following situations a child should be investigated further if they aren't:

      Your Answer: Saying single words with meaning by 18 months

      Explanation:

      If a child is not saying single words with meaning by 18 months it suggests that he or she is not following normal developmental milestones and further investigation is needed. Children are usually expected to be dry by day at the age of 3 years and dry by night at the age of 4 years, however 10% of 5 year old children and 5% of 10 year old children still wet the bed.

    • This question is part of the following fields:

      • Child Development
      34.1
      Seconds
  • Question 29 - A 17-year-old girl presents to the clinic complaining of dry skin and amenorrhoea...

    Correct

    • A 17-year-old girl presents to the clinic complaining of dry skin and amenorrhoea for the past 9 months. She goes to college and is performs well academically. Physical examination shows an underweight girl (weight 38 kg), height 1.78 m (5 ft 10 inches). Excessive small hair can be seen growing on the body. Labs are significant for an elevated cortisol level, normal T4 level, and anaemia associated with reduced WBCs and platelets. Based on this clinical picture, what is the most likely cause of her symptoms?

      Your Answer: Anorexia nervosa

      Explanation:

      Anorexia nervosa is an eating disorder defined by restriction of energy intake relative to requirements, leading to a significantly low body weight. Patients will have an intense fear of gaining weight and distorted body image with the inability to recognize the seriousness of their significantly low body weight. Athletes in sports such as ballet, long-distance running, and martial arts are pressured to maintain lean body weights to outperform the competition.

    • This question is part of the following fields:

      • Endocrinology
      53.4
      Seconds
  • Question 30 - A 4 year old baby was brought in by her mother with complaints...

    Correct

    • A 4 year old baby was brought in by her mother with complaints of generalized pallor, loss of weight and loose stools. The baby's stools were frothy in nature and difficult to flush. Which investigation can help in diagnosing this patient?

      Your Answer: Anti-endomysial antibodies

      Explanation:

      The presence of anti-endomysial antibodies confirms the diagnosis of Celiac disease, which is the primary cause of illness in this patient. The sweat chloride test is performed with cystic fibrosis.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      20
      Seconds
  • Question 31 - Which of the following statements is true regarding eczema herpeticum? ...

    Correct

    • Which of the following statements is true regarding eczema herpeticum?

      Your Answer: Is usually associated with lymphadenopathy

      Explanation:

      Eczema herpeticum (also called Kaposi varicelliform eruption) is a disseminated viral illness usually associated with lymphadenopathy.It is most often caused by Herpes Simplex type 1 or type 2. Occasionally, other viruses such as coxsackievirus A16 may cause eczema herpeticum. Affected children usually develop itchy blisters and fever after coming in contact with an affected individual who may or may not display cold sores.It is characterised by an itchy and sometimes painful cluster of blisters most commonly on the face initially. This spreads over one to several weeks resulting in further crops of blisters which can become confluent. Lymphadenopathy and fever are common in these patients.The severity varies from mild illness to life-threatening, especially in immunocompromised children or young infants. It is markedly more common in children with atopic dermatitis. It is one of the few dermatological emergencies, and oral antivirals are often indicated. Referral to an ophthalmologist may be needed if there is eyelid or eye involvement. Occasionally, superadded skin infections caused by staphylococci and streptococci can occur.

    • This question is part of the following fields:

      • Dermatology
      22.7
      Seconds
  • Question 32 - Absence of which of the following milestones warrants further assessment in a 15-month-old...

    Incorrect

    • Absence of which of the following milestones warrants further assessment in a 15-month-old child?

      Your Answer: Follow a one step command

      Correct Answer: Stand holding onto furniture

      Explanation:

      By 15 months, it’s common for many toddlers to:- say three to five words.- understand and follow simple commands.- point to one body part.- walk alone and begin to run.- climb on furniture.- make marks with a crayon.- imitate activities, such as housework.

    • This question is part of the following fields:

      • Child Development
      119
      Seconds
  • Question 33 - Which of the following is NOT a risk factor for neonatal polycythaemia? ...

    Correct

    • Which of the following is NOT a risk factor for neonatal polycythaemia?

      Your Answer: Jaundice

      Explanation:

      Polycythaemia is a commonly occurring neonatal disorder, which is characterized by a venous haematocrit ≥ 65%. It increases the blood viscosity and causes microcirculatory flow impairment in the end-organs. Causes of polycythaemia are multi-factorial, but the significant risk factors are maternal diabetes, SGA, LGA or post-term birth, infants with chromosomal abnormalities, and delayed clamping of the cord. Jaundice is not a recognized risk factor for polycythaemia.

    • This question is part of the following fields:

      • Neonatology
      13.7
      Seconds
  • Question 34 - A 14 year-old girl is found to have haemophilia B. What pathological problem...

    Correct

    • A 14 year-old girl is found to have haemophilia B. What pathological problem does she have?

      Your Answer: Deficiency of factor IX

      Explanation:

      Haemophilia B (also known as Christmas disease) is due to a deficiency in factor IX. Haemophilia A is due to a deficiency in factor VIII.

    • This question is part of the following fields:

      • Haematology And Oncology
      10.3
      Seconds
  • Question 35 - Extracellular body fluid as compared with intracellular body fluid: ...

    Correct

    • Extracellular body fluid as compared with intracellular body fluid:

      Your Answer: Is relatively rich in glucose

      Explanation:

      The percentages of body water contained in various fluid compartments add up to total body water (TBW). This water makes up a significant fraction of the human body, both by weight and by volume. Ensuring the right amount of body water is part of fluid balance, an aspect of homeostasis. The extracellular fluid (ECF) includes all fluids outside the cells. This fluid can be divided into three fluid departments: interstitial (in the tissue spaces) fluid, blood plasma and lymph, and specialised compartments called transcellular fluid. The extracellular fluid surrounds all the cells in the body and is in equilibrium with the intracellular fluid. So, its composition must remain fairly constant even though substances are passing into and out of the cells. The interstitial fluid, though called a fluid, is in a reality a gel-like composition made up of: water, proteoglycan molecules and collagen. The extracellular fluid constitutes 40% of total body water, with intracellular fluid making up the remaining 60%. It is relatively rich in glucose.

    • This question is part of the following fields:

      • Fluid And Electrolytes
      13
      Seconds
  • Question 36 - A 4-year-old girl with an abnormal facial appearance has an ejection systolic murmur...

    Incorrect

    • A 4-year-old girl with an abnormal facial appearance has an ejection systolic murmur radiating to between her scapulae. A radio-femoral delay was also found. Which of the following is the most probable cause?

      Your Answer: Noonan's syndrome

      Correct Answer: Turner's syndrome

      Explanation:

      These cardiovascular findings are suggestive of coarctation of the aorta, which is common among patients with Turner’s syndrome. Physical features of Turner’s syndrome include a short neck with a webbed appearance, a low hairline at the back of the head, low-set ears, and narrow fingernails and toenails that are turned upward.Atrioventricular septal defect is the most common cardiac anomaly in Down’s syndrome. Structural heart defects at birth (i.e., ventricular septal defect, atrial septal defect, patent ductus arteriosus) are common in Edward’s syndrome. Pulmonary stenosis with or without dysplastic pulmonary valve and hypertrophic cardiomyopathy are common in Noonan’s syndrome. Supravalvar aortic stenosis and peripheral pulmonary stenosis are found in William’s syndrome.

    • This question is part of the following fields:

      • Genetics And Dysmorphology
      34.3
      Seconds
  • Question 37 - In which of the following ethnic backgrounds are Mongolian blue spots most likely...

    Correct

    • In which of the following ethnic backgrounds are Mongolian blue spots most likely to be found?

      Your Answer: White European

      Explanation:

      Mongolian spots are, hyper-pigmented, non-blanching patches present on the back and gluteal region at birth. They are commonly found in African and Asian ethnic groups, and can also present in infants of Mediterranean and middle eastern descent. Though the spots usually disappear by puberty, some may persist into adulthood.

    • This question is part of the following fields:

      • Neonatology
      7.2
      Seconds
  • Question 38 - Which of the following features is not associated with Marfan's syndrome? ...

    Correct

    • Which of the following features is not associated with Marfan's syndrome?

      Your Answer: Autosomal recessive inheritance

      Explanation:

      Marfan syndrome is a disorder that affects the connective tissue in many parts of the body. Connective tissue provides strength and flexibility to structures such as bones, ligaments, muscles, blood vessels, and heart valves. The signs and symptoms of Marfan syndrome vary widely in severity, timing of onset, and rate of progression.This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder.At least 25 percent of Marfan syndrome cases result from a new mutation in the FBN1 gene. These cases occur in people with no history of the disorder in their family.The two primary features of Marfan syndrome are vision problems caused by a dislocated lens (ectopia lentis) in one or both eyes and defects in the large blood vessel that distributes blood from the heart to the rest of the body (the aorta).Associations include:Tall statureLearning disability (50%)Lens subluxation (usually upwards)Femoral herniaHemivertebraeCardiac problems (Aortic/mitral regurgitation, aneurysms)Joint hypermobilityArachnodactyly

    • This question is part of the following fields:

      • Genetics And Dysmorphology
      12.5
      Seconds
  • Question 39 - An infant presents with a rash to her body consisting of greasy yellow...

    Correct

    • An infant presents with a rash to her body consisting of greasy yellow crusted lesions. Her mother complains that the child has been experiencing chronic diarrhoea and recurrent skin infections. She is non-febrile, but her growth chart is highly suggestive of failure to thrive.The constellation of symptoms present in this child suggests which of the following conditions?

      Your Answer: Leiner's disease

      Explanation:

      Based on the patient’s presentation, he’s probably suffering from Leiner’s diseaseLeiner’s disease is a severe generalised form of seborrhoeic dermatitis. It is also associated with recurrent diarrhoea, recurrent skin and internal infections, and failure to thrive.Seborrhoeic dermatitis is a common and self-limiting condition in childhood. Lesions affect the scalp (cradle cap), and sometimes the ear, nose, and eyebrows. It is characterised by greasy yellow or yellow-brown scales.There is an association with Malassezia, and the lesions are a reaction to this yeast, rather than caused by it.It is most common in the 6-12 month age group. Simple brushing with a soft bristle brush, use of oil or emollient, and ketoconazole 2% shampoo are all treatment options.

    • This question is part of the following fields:

      • Dermatology
      43.2
      Seconds
  • Question 40 - Which of the following could be an indicator of possible language delay in...

    Correct

    • Which of the following could be an indicator of possible language delay in an otherwise well child?

      Your Answer: A family history of hereditary deafness

      Explanation:

      In the first few years of life the developing sensory inputs are important. Hearing is essential for speech and language development and may be delayed when a child cannot hear. Therefore any child with a family history of hereditary deafness should be screened. From about 4-6months babies are able to laugh and babble when excited or unhappy. By the age of 9 months the child should be able to bring together groups of same sound syllables and be able to say one or two words by the 1st birthday. If a child is unable to babble by 10-12 years, it may indicate hearing impairment. By the age of 2 a child should be able to speak in 1 or 2 word phrases and often repeats phrases used by others, known as Echolalia.

    • This question is part of the following fields:

      • Child Development
      14.4
      Seconds
  • Question 41 - A 12-year-old child has developed a fever and maculopapular rash on his back....

    Correct

    • A 12-year-old child has developed a fever and maculopapular rash on his back. What diagnosis should he be given?

      Your Answer: Chicken pox

      Explanation:

      Chickenpox is caused by the varicella-zoster virus. The clinical signs of infection are fever and a maculopapular rash – this is a unique rash with both flat and raised lesions on the skin.

    • This question is part of the following fields:

      • Infectious Diseases
      8.4
      Seconds
  • Question 42 - A 17-year-old boy, who had developed shortness of breath and a loss of...

    Correct

    • A 17-year-old boy, who had developed shortness of breath and a loss of appetite over the last month, was referred to a haematologist because he presented with easy bruising and petechiae. His prothrombin time, platelet count, partial thromboplastin and bleeding time were all normal. Which of the following would explain the presence of the petechiae and easy bruising tendency?

      Your Answer: Scurvy

      Explanation:

      Scurvy is a condition caused by a dietary deficiency of vitamin C, also known as ascorbic acid. Humans are unable to synthesize vitamin C, therefore the quantity of it that the body needs has to come from the diet. The presence of an adequate quantity of vitamin C is required for normal collagen synthesis. In scurvy bleeding tendency is due to capillary fragility and not coagulation defects, therefore blood tests are normal.

    • This question is part of the following fields:

      • Nutrition
      141.4
      Seconds
  • Question 43 - The severity of psoriasis can be assessed using which of the following tools?...

    Incorrect

    • The severity of psoriasis can be assessed using which of the following tools?

      Your Answer: Paediatric Psoriasis Scale- PPS

      Correct Answer: Psoriasis Area and Severity Index- PASI

      Explanation:

      Psoriasis is a chronic inflammatory skin disease that is mainly due to the interplay between keratinocytes, dermal vascular cells, and antigen-presenting cells. There are five main types of psoriasis based on the type and severity of the lesions it produces. A useful tool to determine the extent and severity of psoriasis is the Psoriasis Area and Severity Index (PASI) score, which takes into account the percentage of a specific area affected by psoriasis in combination with severity, which in turn is assessed by the presence of desquamation, induration, and erythema.

    • This question is part of the following fields:

      • Dermatology
      26.3
      Seconds
  • Question 44 - A neonate has been observed, by his parents, twitching and jerking in his...

    Correct

    • A neonate has been observed, by his parents, twitching and jerking in his sleep. Which one of the following is not a cause of neonatal seizures?

      Your Answer: Neonatal myoclonus

      Explanation:

      Benign neonatal sleep myoclonus (BNSM) is a disorder commonly mistaken for seizures during the new-born period. It is characterized by myoclonic lightninglike jerks of the extremities that exclusively occur during sleep| it is not correlated with epilepsy.Causes of neonatal seizures:Hypoxic-ischemic encephalopathy: Hypoxic-ischemic encephalopathy disrupts the ATP-dependent sodium-potassium pump and appears to cause excessive depolarization.Intracranial haemorrhage: occurs more frequently in premature than in term infants. Subarachnoid haemorrhage is more common in term infants. This type of haemorrhage occurs frequently and is not clinically significant. Typically, infants with subarachnoid haemorrhage appear remarkably well. Metabolic disturbances include hypoglycaemia, hypocalcaemia, and hypomagnesemia. Less frequent metabolic disorders, such as inborn errors of metabolism, are seen more commonly in infants who are older than 72 hours. Typically, they may be seen after the infant starts feeding.Intracranial infections (which should be ruled out vigorously) that are important causes of neonatal seizures include meningitis, encephalitis (including herpes encephalitis), toxoplasmosis, and cytomegalovirus (CMV) infections. The common bacterial pathogens include Escherichia coli and Streptococcus pneumoniae.Cerebral malformationsBenign neonatal seizures

    • This question is part of the following fields:

      • Neonatology
      35.9
      Seconds
  • Question 45 - A 10-year-old girl with type-1 diabetes mellitus presents with vomiting and rapid breathing....

    Incorrect

    • A 10-year-old girl with type-1 diabetes mellitus presents with vomiting and rapid breathing. A diagnosis of acute diabetic ketoacidosis was made. Which of the following regarding management is incorrect?

      Your Answer: Bolus of sodium bicarbonate is usually not necessary to correct the acidosis

      Correct Answer: Bolus of insulin recommended

      Explanation:

      The following methods are adopted for the treatment of DKA:

      – Fluids: Bolus of 10 ml/kg of normal saline. Stop at three boluses to avoid precipitating cerebral oedema. The remaining deficit has to be corrected over 48 hours. Strict input/output, U&E, and pH monitoring is necessary in such patients.

      – Insulin: Insulin infusion can be initiated at 0.05-0.1 unit/kg/hour. It is essential to monitor blood glucose closely, and the aim is to decrease by 2 mmol/hour.

      – Potassium: Initially, it will be high, but following insulin administration, the levels drop quickly as K+ enters cells with glucose, and thus, replacement is almost always necessary.

      – Acidosis: Bicarbonate is avoided unless pH is less than 7. Acidosis will get corrected with the correction of fluid and insulin deficits. The definitive treatment is directed towards correcting the underlying precipitants of DKA, e.g. sepsis, infections.

    • This question is part of the following fields:

      • Endocrinology
      10.3
      Seconds
  • Question 46 - A 10 year old boy is being bullied by his classmates because he's...

    Incorrect

    • A 10 year old boy is being bullied by his classmates because he's obese and he is the shortest in his class. His mother is worried and brings him in to the clinic. History reveals he had a renal transplant last year. What is the most likely diagnosis?

      Your Answer: Lawrence moon biedel syndrome

      Correct Answer: Cushing’s syndrome

      Explanation:

      The boy had a renal transplant, for which he needs immune suppression. For the exogenous immune suppression an exogenous steroid is needed, which in this case is responsible for the primary Cushing syndrome manifesting with short stature. The administration of steroids before the physiological fusion of the growth plate can lead to premature fusion with permanent cessation of bone growth.

    • This question is part of the following fields:

      • Endocrinology
      25.1
      Seconds
  • Question 47 - What serious side effect would you expect, after giving IV lorazepam to a...

    Incorrect

    • What serious side effect would you expect, after giving IV lorazepam to a 4-year-old boy suffering from febrile convulsions?

      Your Answer: Amnesia

      Correct Answer: Apnoea

      Explanation:

      Lorazepam is known to cause respiratory depression and finally apnoea as a side effect.

    • This question is part of the following fields:

      • Pharmacology
      50.8
      Seconds
  • Question 48 - A young female who carries the abnormal RET oncogene has her recurrent laryngeal...

    Incorrect

    • A young female who carries the abnormal RET oncogene has her recurrent laryngeal nerve accidentally divided during a thyroidectomy. Which clinical features are likely to result from this?

      Your Answer: The larynx is totally anaesthetised on the affected side

      Correct Answer: The larynx is anaesthetised inferior to the vocal cord on the affected side

      Explanation:

      The recurrent laryngeal nerve (RLN) innervates all of the intrinsic muscles of the larynx except for the cricothyroid muscle, which is innervated by the superior laryngeal nerve (SLN).Patients with unilateral vocal fold paralysis present with postoperative hoarseness or breathiness. The presentation is often subacute. At first, the vocal fold usually remains in the paramedian position, creating a fairly normal voice. Definite vocal changes may not manifest for days to weeks. The paralyzed vocal fold atrophies, causing the voice to worsen. Other potential sequelae of unilateral vocal-fold paralysis are dysphagia and aspiration.Bilateral vocal-fold paralysis may occur after total thyroidectomy, and it usually manifests immediately after extubation. Both vocal folds remain in the paramedian position, causing partial airway obstruction. Patients with bilateral vocal-fold paralysis may present with biphasic stridor, respiratory distress, or both. On occasion, the airway is sufficient in the immediate postoperative period despite the paralyzed vocal folds. At follow-up, such patients may present with dyspnoea or stridor with exertion.

    • This question is part of the following fields:

      • Anatomy
      19.9
      Seconds
  • Question 49 - A child presents with hypertension. Serum potassium analysis shows hypokalaemia. What is the...

    Incorrect

    • A child presents with hypertension. Serum potassium analysis shows hypokalaemia. What is the most likely diagnosis?

      Your Answer: Bartter Syndrome

      Correct Answer: Liddle syndrome

      Explanation:

      Liddle’s syndrome,  is an autosomal dominant disorder, that is characterized by early, and frequently severe, high blood pressure associated with low plasma renin activity, metabolic alkalosis, low blood potassium, and normal to low levels of aldosterone. Liddle syndrome involves abnormal kidney function, with excess reabsorption of sodium and loss of potassium from the renal tubule. Bartter Syndrome also presents with hypokalaemia, however blood pressure of these patients is usually low or normal.

    • This question is part of the following fields:

      • Fluid And Electrolytes
      20.1
      Seconds
  • Question 50 - A 15-year-old boy with type 1 DM is recently started on an insulin...

    Correct

    • A 15-year-old boy with type 1 DM is recently started on an insulin pump. There has been better glycaemic control and he now subsequently enjoys a healthy, active lifestyle. During the consultation, he seems to acknowledge the risks of missing out his dose and says that he is comfortable with his new pump. he mentions that he changes his site after every 4 days. However, a random blood sugar analysis reveals it to be 22.3 mmol/L. Which of the following is the most likely reason for the raised RBS level?

      Your Answer: Site change is overdue

      Explanation:

      Insertion sites and sensor sites should be rotated each time the infusion set or glucose sensor is changed. This keeps the tissue healthy and allows previous sites to completely heal before reusing them. Change infusion set every 2 to 3 days to help prevent infection.

    • This question is part of the following fields:

      • Endocrinology
      31.3
      Seconds
  • Question 51 - Which of the following features is consistent with ventricular septal defect (VSD) murmur?...

    Incorrect

    • Which of the following features is consistent with ventricular septal defect (VSD) murmur?

      Your Answer: Loud P2

      Correct Answer: Short diamond shaped diastolic murmur after the third heart sound

      Explanation:

      Auscultatory findings of VSD vary with the size of the defect. Small VSDs typically produce murmurs ranging from a grade 1 to 2/6 high-pitched, short systolic murmur (due to tiny defects that actually close during late systole) to a grade 3 to 4/6 holosystolic murmur (with or without thrill) at the lower left sternal border| this murmur is usually audible within the first few days of life (see table Heart Murmur Intensity). The precordium is not hyperactive, and the 2nd heart sound (S2) is normally split and has normal intensity.Moderate to large VSDs produce a holosystolic murmur that is present by age 2 to 3 wk| S2 is usually narrowly split with an accentuated pulmonary component. An apical diastolic rumble (due to increased flow through the mitral valve) and findings of heart failure (e.g., tachypnoea, dyspnoea with feeding, failure to thrive, gallop, crackles, hepatomegaly) may be present. In moderate, high-flow VSDs, the murmur is often very loud and accompanied by a thrill (grade 4 or 5 murmur). With large defects allowing equalization of left ventricular and right ventricular pressures, the systolic murmur is often attenuated.

    • This question is part of the following fields:

      • Cardiovascular
      7.4
      Seconds
  • Question 52 - Which of the following criteria can be used to diagnose neonatal polycythaemia? ...

    Incorrect

    • Which of the following criteria can be used to diagnose neonatal polycythaemia?

      Your Answer: Capillary blood haematocrit >55%

      Correct Answer: Venous blood haematocrit > 65%

      Explanation:

      Polycythaemia is described as an abnormal increase in the red cell mass. As this influences hyper-viscosity, a peripheral venous sample of blood haematocrit can be used to determine the packed cell volume. Polycythaemia is present if the venous haematocrit is >65% or <22g/dl if converted into a haemoglobin value. Though it is the method of choice for screening, capillary blood samples obtained though heel pricks in new-born may be as much as 15% higher than venous samples and thus high values must be confirmed with a venous sample.

    • This question is part of the following fields:

      • Neonatology
      51
      Seconds
  • Question 53 - A 1 year old child presents with barking cough, coryza and shortness of...

    Incorrect

    • A 1 year old child presents with barking cough, coryza and shortness of breath. What will be the most likely outcome associated with this condition?

      Your Answer: Persist into adult life

      Correct Answer: Natural resolution

      Explanation:

      Croup is the most common aetiology for hoarseness, cough, and onset of acute stridor in febrile children. Symptoms of coryza may be absent, mild, or marked. The vast majority of children with croup recover without consequences or sequelae.

    • This question is part of the following fields:

      • Respiratory
      23.5
      Seconds
  • Question 54 - Which of the following statements is false regarding H. pylori? ...

    Incorrect

    • Which of the following statements is false regarding H. pylori?

      Your Answer: Infection is associated with hypochlorhydria

      Correct Answer: Splitting urea to release nitrogen decreases the pH in the stomach

      Explanation:

      H. pylori release the enzyme urease that has the ability to split urea releasing nitrogen. This process increases the pH in the gastric antrum making the gastric pH less acidic.Helicobacter pylori:It is a spiral, microaerophilic, gram-negative bacterium. It is one of the most common causes of antral gastritis in children. Ulcers are less common in children compared with adults| however, when they occur, they are more common in the duodenum.The presence of H.pylori can be confirmed by:- Stool antigen test (preferred)- Serology- Endoscopy with biopsy and culture- Rapid urease testsH.pylori gastritis may be associated with:- Iron deficiency anaemia- Gastric malignancy Management:The treatment is with triple therapy- two antibiotics, and an antacid.Treatment failure is often attributed to a possible worldwide increase in macrolide resistance. Interestingly, children have higher antibiotic resistance compared with adults.Note:Zollinger-Ellison syndrome (ZES) causes gastrin-secreting tumours and can present as a part of multiple endocrine neoplasia type 1 (MEN1)- an autosomal dominant disorder.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      14.1
      Seconds
  • Question 55 - A 17-year-old girl presents with multiple non-healing ulcers, poor dentition, bleeding gums and...

    Correct

    • A 17-year-old girl presents with multiple non-healing ulcers, poor dentition, bleeding gums and pale conjunctivae. She also complains of easy fatiguability.What is the most probable diagnosis?

      Your Answer: Vitamin C deficiency

      Explanation:

      The clinical scenario presented is highly suggestive of vitamin C deficiency (Scurvy).Vitamin C is found in citrus fruits, tomatoes, potatoes, Brussel sprouts, cauliflower, broccoli, cabbage and spinach. Deficiency leads to impaired collagen synthesis and disordered connective tissue. Scurvy is associated with severe malnutrition as well as drug and alcohol abuse, and those living in poverty with limited access to fruits and vegetables.Symptoms and signs include:- Follicular hyperkeratosis and perifollicular haemorrhage- Ecchymosis- Gingivitis with bleeding and receding gums- Sjogren’s syndrome- Arthralgia- Oedema- Impaired wound healing- Generalised symptoms such as weakness, malaise, anorexia and depression

    • This question is part of the following fields:

      • Nutrition
      25.9
      Seconds
  • Question 56 - Childhood absence epilepsy is characterized by which of the given facts? ...

    Correct

    • Childhood absence epilepsy is characterized by which of the given facts?

      Your Answer: 3-Hz spike-and-slow-wave complexes are seen on electroencephalograms (EEGs)

      Explanation:

      Absence epilepsy is the most common type of generalized childhood epilepsies. It is mainly idiopathic, but 10-40% of the cases have a positive family history. It is characterized by frequent absence seizures and periods of unconsciousness. The hallmark of absence epilepsy on EEG is the bilaterally synchronous 2–4 Hz spike and wave discharges (SWDs). The average age of onset is around 4-8 years, being more prevalent among girls. Treatment resistance is not common.

    • This question is part of the following fields:

      • Neurology And Neurodisability
      367.7
      Seconds
  • Question 57 - A 6 month old female is brought by her parents who are concerned...

    Correct

    • A 6 month old female is brought by her parents who are concerned regarding her development. Which of the following is expected of developmental milestones at this age?

      Your Answer: They enjoy playing with their parents

      Explanation:

      6 month old babies that go through normal developmental milestones, should enjoy playing with others and especially their parents.The other milestones are expected of a 9-month-old.

    • This question is part of the following fields:

      • Child Development
      7.4
      Seconds
  • Question 58 - A 37 week foetus is found to be in transverse position on ultrasound....

    Incorrect

    • A 37 week foetus is found to be in transverse position on ultrasound. The position has not changed despite attempting External Cephalic Version at 36 weeks and the due date is in a week. What is the preferred option of delivery for a foetus in a transverse lie?

      Your Answer: Forceps-assisted delivery

      Correct Answer: Caesarean section

      Explanation:

      A transverse lie is a common malpresentation. It occurs when the fetal longitudinal axis is perpendicular to the long axis of the uterus. The location of the spine determines if the foetus is back up (the curvature of the spine is in the upper part of the uterus) or back down (the curvature of the spine is in the lower part of the uterus).Good antenatal care, ECV, and elective caesarean section are the mainstay of the management.Spontaneous delivery of a term foetus is impossible with a persistent transverse lie and, in general, the onset of labour is an indication for the lower segment caesarean section (LSCS) in a case of a transverse lie.

    • This question is part of the following fields:

      • Neonatology
      13.5
      Seconds
  • Question 59 - Which of the following diseases correctly matches the incubation period? ...

    Correct

    • Which of the following diseases correctly matches the incubation period?

      Your Answer: Mumps - 14-18 days

      Explanation:

      The incubation periods of disorders is extremely important to diagnose, treat, prevent or attenuate a disease. Chickenpox: 7-21 days. Whooping cough: 10-14 days. Hand, foot and mouth disease: 2-6 days. German measles: 14-21 days. Mumps: 14-18 days.

    • This question is part of the following fields:

      • Infectious Diseases
      18.2
      Seconds
  • Question 60 - A male term infant was admitted to the neonatal unit on day 4...

    Incorrect

    • A male term infant was admitted to the neonatal unit on day 4 for severe jaundice. The bilirubin at that time was 320 mmol/l, which decreased with phototherapy. At day 30, the baby still required phototherapy to keep the bilirubin below the treatment line. On examination, the skin had a tanned appearance and his sclerae were icteric. Mother’s blood group was A+, the baby's blood group was A+, direct Coombs test (DCT) was negative. What is the MOST likely diagnosis?

      Your Answer: ABO incompatibility

      Correct Answer: Crigler-Najjar syndrome

      Explanation:

      Crigler-Najjar syndrome is a rare genetic disorder characterized by an inability to properly convert and clear bilirubin from the body.The hallmark finding of Crigler-Najjar syndrome is a persistent yellowing of the skin, mucous membranes and whites of the eyes (jaundice).There are two forms of this disorder: Crigler-Najjar syndrome type I, characterized by a nearly complete lack of enzyme activity and severe, even life-threatening symptoms| and Crigler-Najjar syndrome type II, characterized by partial enzyme activity and milder symptoms. Both forms are inherited as autosomal recessive traits and are caused by errors or disruptions (mutations) of the UGT1A1 gene.The symptoms of Crigler-Najjar syndrome type I become apparent shortly after birth. Affected infants develop severe, persistent yellowing of the skin, mucous membranes and whites of the eyes (jaundice). These symptoms persist after the first three weeks of life.Infants are at risk for developing kernicterus, also known as bilirubin encephalopathy, within the first month of life.Crigler-Najjar syndrome type II is a milder disorder than type I. Affected infants develop jaundice, which increases during times when an infant is sick (concurrent illness), has not eaten for an extended period (prolonged fasting) or is under general anaesthesia. Some people have not been diagnosed until they are adults. Kernicterus is rare in Crigler-Najjar syndrome type II, but can occur especially when an affected individual is sick, not eating or under anaesthesia

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      38.8
      Seconds
  • Question 61 - A 3-year-old girl presents to A&E following a few days of being lethargic,...

    Incorrect

    • A 3-year-old girl presents to A&E following a few days of being lethargic, having runny nose, sore throat, and fever. She has unceasing stridor and drooling of saliva while her body is inclined forward. What is the most important next step in her management?

      Your Answer: High flow O2

      Correct Answer: Call ENT specialist

      Explanation:

      A consultation with an ENT is required to establish the reason for the child’s drooling and stridor indicating and obstructive process. Enlarged tonsils and adenoids should be checked.

    • This question is part of the following fields:

      • ENT
      22.9
      Seconds
  • Question 62 - Which of the following segments of the ECG represents ventricular repolarization? ...

    Correct

    • Which of the following segments of the ECG represents ventricular repolarization?

      Your Answer: T wave

      Explanation:

      The T wave represents ventricular repolarization. Other options:- P wave:Depolarization that spreads from the SA node throughout the atria. The wave lasts 0.08 to 0.1 seconds (80-100 ms).The isoelectric period after the P wave represents the time in which the impulse is travelling within the AV node.- P-R interval:Time from the onset of the P wave to the beginning of the QRS complex. The wave ranges from 0.12 to 0.20 seconds in duration.Represents the time between the onset of atrial depolarization and the onset of ventricular depolarization- QRS complex:It represents ventricular depolarization. The duration of the QRS complex is normally 0.06 to 0.1 seconds.- ST-segment:The isoelectric period following the QRS. It represents the period in which the entire ventricle is depolarized and roughly corresponds to the plateau phase of the ventricular action potential- U wave: It is a small positive wave which may follow the T wave. It represents the last remnants of ventricular repolarization.- Q-T intervalIt represents the time for both ventricular depolarization and repolarization to occur, and therefore roughly estimates the duration of an average ventricular action potential.The interval ranges from 0.2 to 0.4 seconds depending upon heart rate.At high heart rates, ventricular action potentials shorten in duration, which decreases the Q-T interval. Therefore the Q-T interval is expressed as a corrected Q-T (QTc) by taking the Q-T interval and dividing it by the square root of the R-R interval (interval between ventricular depolarizations). This allows an assessment of the Q-T interval that is independent of heart rate.The normal corrected Q-Tc interval is less than 0.44 seconds.

    • This question is part of the following fields:

      • Cardiovascular
      24.1
      Seconds
  • Question 63 - A 14 year old girl presented with complaints of acne vulgaris over her...

    Correct

    • A 14 year old girl presented with complaints of acne vulgaris over her face. The acne is exacerbated during her menstrual period. The most appropriate treatment option would be?

      Your Answer: Topical benzoyl peroxide

      Explanation:

      Topical benzoyl peroxide is used for the treatment of mild to moderate acne vulgaris. It is actually a peeling agent and it clears the pores and reduces the bacterial cell count.

    • This question is part of the following fields:

      • Dermatology
      39.3
      Seconds
  • Question 64 - During the excision of the submandibular salivary gland, which one of the following...

    Incorrect

    • During the excision of the submandibular salivary gland, which one of the following nerves is at risk of injury as the duct is mobilised?

      Your Answer: Vagus

      Correct Answer: Lingual nerve

      Explanation:

      The lingual nerve wraps around Wharton’s duct, and thus, is at risk of injury as the submandibular gland is mobilised. The lingual nerve provides sensory supply to the anterior 2/3 of the tongue.Note:- Submandibular duct (Wharton’s duct): It opens lateral to the lingual frenulum on the anterior floor of the mouth. It is around 5 cm in length.- Lingual nerve wraps around Wharton’s duct. As the duct passes forwards, it crosses medial to the nerve, above it and then crosses back, lateral to it, to reach a position below the nerve.

    • This question is part of the following fields:

      • ENT
      38.4
      Seconds
  • Question 65 - A 40-week-old baby presented with a weak cry and failure to thrive. The...

    Correct

    • A 40-week-old baby presented with a weak cry and failure to thrive. The mother gives a history of prolonged neonatal jaundice and says it is common in her family. On examination, a large tongue was noticed. What is the most likely diagnosis?

      Your Answer: Congenital hypothyroidism

      Explanation:

      Congenital hypothyroidism is associated with failure to thrive, macroglossia, prolonged jaundice of a new-born and constipation.

    • This question is part of the following fields:

      • Endocrinology
      26
      Seconds
  • Question 66 - An 11-year-old girl presents to the paediatric assessment unit with a widespread macular...

    Incorrect

    • An 11-year-old girl presents to the paediatric assessment unit with a widespread macular rash. She had a previous history of flu-like illness and sore throat diagnosed as tonsillitis for which she was prescribed Amoxicillin. On examination, she has widespread cervical lymphadenopathy and petechiae on her palate. What is the most likely underlying pathogen?

      Your Answer: Parainfluenza

      Correct Answer: Epstein Barr Virus

      Explanation:

      Based on the clinical scenario, the most likely underlying pathogen is the Epstein Barr virus (EBV).An Epstein Barr virus (EBV) infection most commonly results in upper respiratory tract symptoms with fever and sore throat. Lymphadenopathy is frequently palpable on examination. Splenomegaly may also occur, and for this reason, patients diagnosed with glandular fever should be advised to avoid contact sports for one month following diagnosis. The presence of petechiae on the soft palate is also associated with EBV infection. The vast majority of patients with active EBV infection will develop a widespread rash if given amoxicillin, therefore, phenoxymethylpenicillin (Penicillin V) is recommended for the treatment of a suspected bacterial throat infection to prevent this complication occurring for individuals who have EBV infection.Other options:- Coronavirus: This is one of the causes of the common cold and is frequently responsible for sore throats| however, in this case, the presenting features are more suggestive of an EBV infection.- Group A Streptococcus: Streptococci are classified into two main groups| alpha-haemolytic and beta-haemolytic. Group A Streptococcus belongs to the beta-haemolytic group. Group A streptococcal infection is a common cause of bacterial tonsillitis. It is possible that the child, in this case, had streptococcal tonsillitis and has had a drug reaction to the amoxicillin. However her age, flu-like symptoms and petechiae on her palate all point to an EBV infection and amoxicillin resulting in a rash.- Parainfluenza: Parainfluenza viruses are one of many causes of the common cold and can cause pharyngitis. They are the leading cause of viral croup.- Rhinovirus: Rhinoviruses are one of many causes of the common cold and are frequently responsible for sore throats| however, in this case, are other factors suggesting EBV infection.

    • This question is part of the following fields:

      • ENT
      13.6
      Seconds
  • Question 67 - A 16-year-old autistic boy who has had learning difficulties is found to have...

    Correct

    • A 16-year-old autistic boy who has had learning difficulties is found to have large testes. Which condition does the child most likely have?

      Your Answer: Fragile X syndrome

      Explanation:

      Fragile X syndrome is a genetic condition that causes a range of developmental problems including learning disabilities and cognitive impairment. Usually, males are more severely affected by this disorder than females.Affected individuals usually have delayed development of speech and language by age 2. Most males with fragile X syndrome have mild to moderate intellectual disability, while about one-third of affected females are intellectually disabled. Children with fragile X syndrome may also have anxiety and hyperactive behaviour such as fidgeting or impulsive actions. They may have attention deficit disorder (ADD), which includes an impaired ability to maintain attention and difficulty focusing on specific tasks. About one-third of individuals with fragile X syndrome have features of autism spectrum disorder that affect communication and social interaction. Seizures occur in about 15 percent of males and about 5 percent of females with fragile X syndrome.Most males and about half of females with fragile X syndrome have characteristic physical features that become more apparent with age. These features include a long and narrow face, large ears, a prominent jaw and forehead, unusually flexible fingers, flat feet, and in males, enlarged testicles (macroorchidism) after puberty.

    • This question is part of the following fields:

      • Endocrinology
      45.4
      Seconds
  • Question 68 - A 11 year old girl with a history of recurrent chest infections, was...

    Incorrect

    • A 11 year old girl with a history of recurrent chest infections, was admitted with a fever, productive cough, anorexia and weight loss. On examination she was febrile and tachycardic. Her mother said that the girl was not thriving well. Which of the following organisms is responsible for this presentation?

      Your Answer: PCP

      Correct Answer: Pseudomonas

      Explanation:

      History of recurrent infections and failure to thrive (probably due to pancreatic enzyme insufficiency) is highly suggestive of cystic fibrosis. Pseudomonas has been identified as an important respiratory pathogen in patients with cystic fibrosis.

    • This question is part of the following fields:

      • Infectious Diseases
      21.7
      Seconds
  • Question 69 - A 10-year-old boy was sent for an x-ray of the leg because he...

    Incorrect

    • A 10-year-old boy was sent for an x-ray of the leg because he was complaining of pain and swelling. The x-ray showed the classic sign of Codman's triangle. What is the most likely diagnosis of this patient?

      Your Answer: Chondrosarcoma

      Correct Answer: Osteosarcoma

      Explanation:

      Codman’s triangle is the triangular area of new subperiosteal bone that is created when a lesion, often a tumour, raises the periosteum away from the bone. The main causes for this sign are osteosarcoma, Ewing’s sarcoma, eumycetoma, and a subperiosteal abscess.

    • This question is part of the following fields:

      • Musculoskeletal
      21.7
      Seconds
  • Question 70 - A 4-year-old boy presents with offensive stool, clubbing of fingers, and recurrent chest...

    Incorrect

    • A 4-year-old boy presents with offensive stool, clubbing of fingers, and recurrent chest pain. Choose the single most appropriate investigation?

      Your Answer: Barium meal

      Correct Answer: Sweat test

      Explanation:

      Cystic fibrosis is a progressive, genetic disease. A defective gene causes a thick, sticky build-up of mucus in the lungs, pancreas, and other organs. In the lungs, the mucus clogs the airways and traps bacteria leading to infections, extensive lung damage, and eventually, respiratory failure. In the pancreas, the mucus prevents the release of digestive enzymes that allow the body to break down food and absorb vital nutrients. Since the digestive enzymes are not being made, the food is not completely digested making them bulky, smelly, and hard to flush away. Finger clubbing is a prominent feature of cystic fibrosis on most patients.

    • This question is part of the following fields:

      • Genetics And Dysmorphology
      26.5
      Seconds
  • Question 71 - A 14-year-old male was involved in a bicycle accident. He was brought to...

    Incorrect

    • A 14-year-old male was involved in a bicycle accident. He was brought to the emergency department with abdominal pain. On the CT scan of the abdomen, a hematoma was present beneath the capsule of the spleen. His BP and pulse were normal. What is the next step in his management?

      Your Answer: Discharge with advice

      Correct Answer: Refer to surgeons for observation

      Explanation:

      A surgeon will observe the patient and will decide which procedure he needs.

    • This question is part of the following fields:

      • Paediatric Surgery
      50.8
      Seconds
  • Question 72 - A 13-year-old boy's mother notices he has a lump in his arm, near...

    Incorrect

    • A 13-year-old boy's mother notices he has a lump in his arm, near his right shoulder. An X-ray reveals a lateral projection in the metaphyseal region of his humerus. The lesion is removed and it is found to be composed of bony cortex, capped by cartilage. What's the most likely diagnosis in this case?

      Your Answer: Enchondroma

      Correct Answer: Osteochondroma

      Explanation:

      Osteochondromas, or osteocartilaginous exostoses, are the most common benign bone tumours, and tend to appear near the ends of long bones. The overgrowth can occur in any bone where cartilage forms bone, and they are capped by cartilage. They are most common in people between the ages of 10-20 years old.

    • This question is part of the following fields:

      • Musculoskeletal
      12.4
      Seconds
  • Question 73 - A 2 year old male is able to run down the stairs and...

    Incorrect

    • A 2 year old male is able to run down the stairs and say mama and dada. He can understand what he is saying and can say one word. How is this child developing?

      Your Answer: Delayed speech and motor milestones

      Correct Answer: Delayed speech

      Explanation:

      This child is experiencing delayed speech. By the age of 2, a child should be able to combine at least 2 words to make a very simple sentence.

    • This question is part of the following fields:

      • Child Development
      27.7
      Seconds
  • Question 74 - A 5 week old baby presents with failure to thrive, falling from the...

    Incorrect

    • A 5 week old baby presents with failure to thrive, falling from the 50th to the 9th percentile on the growth chart for weight. History reveals the baby vomits after each meal. Gestation and delivery were normal without any perinatal or postnatal complications. The baby was healthy at the new-born examination. What is the most probable diagnosis?

      Your Answer: Galactosaemia

      Correct Answer: Pyloric stenosis

      Explanation:

      Pyloric stenosis affects infants, typically in the second to fourth weeks of life and is caused most commonly by hypertrophy and thickening of the pylorus. It usually presents with projectile vomiting and failure to thrive. The infant usually has a normal appetite. Features include: ‘projectile’ vomiting, typically 30 minutes after a feed, constipation and dehydration may also be present and a palpable mass may be present in the upper abdomen.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      13.5
      Seconds
  • Question 75 - Anorexia nervosa is associated with which of the following skin and nail related...

    Incorrect

    • Anorexia nervosa is associated with which of the following skin and nail related changes?

      Your Answer: Beau lines to the nails

      Correct Answer: Acrocyanosis

      Explanation:

      Anorexia nervosa is an eating disorder which is characterized by distorted self-image leading to abnormally decreased calorie intake. This disorder affects multiple bodily systems, including the skin, GI, and endocrine system. Due to extreme weight loss, patients with anorexia nervosa develop cold intolerance along with bluish discoloration of their fingers, nose, and ears, which is known as acrocyanosis. This phenomenon may be due to the shunting of the blood from the peripheries to the central body systems as a reaction to hypothermia. Other notable changes in the integumentary system include extreme dryness (xerosis), lanugo hairs, decubitus ulcers, and easy bruisibility.

    • This question is part of the following fields:

      • Adolescent Health
      13.3
      Seconds
  • Question 76 - A 6-year-old boy with fever and malaise for 2 days recently developed bloody...

    Correct

    • A 6-year-old boy with fever and malaise for 2 days recently developed bloody diarrhoea. What is the most probable aetiology?

      Your Answer: Escherichia coli 0157

      Explanation:

      The most likely organism is enterohemorrhagic verotoxin-producing E.coli. It usually causes haemolytic uremic syndrome.

      Crohn’s disease rarely manifests in an acute manner.

      Polio and giardiasis usually manifest with non-bloody diarrhoea.

      Thread worms don’t always cause symptoms, but people often experience itchiness around their bottom or vagina. It can be worse at night and disturb sleep.

    • This question is part of the following fields:

      • Infectious Diseases
      30.1
      Seconds
  • Question 77 - A 17-year-old boy presents to the emergency after being involved in a fight...

    Incorrect

    • A 17-year-old boy presents to the emergency after being involved in a fight outside a club and being beaten with a baseball bat. Under observation his GCS deteriorates, and he becomes comatose. Which of the following parameters are most likely to be present during this condition?

      Your Answer: Hypotension and bradycardia

      Correct Answer: Hypertension and bradycardia

      Explanation:

      Cushing reflex is a physiological nervous system response to increased intracranial pressure (ICP) that results in Cushing’s triad of increased blood pressure, irregular breathing, and bradycardia. It is usually seen in the terminal stages of acute head injury and may indicate imminent brain herniation. It can also be seen after the intravenous administration of epinephrine and similar drugs.

    • This question is part of the following fields:

      • Emergency Medicine
      30.1
      Seconds
  • Question 78 - An 8-year-old boy is presented with arthritis, cough and non-blanching purpura. His coagulation...

    Incorrect

    • An 8-year-old boy is presented with arthritis, cough and non-blanching purpura. His coagulation profile is normal. His CBC: Hb 11.8 TLC 7.2*10^9 Plt 286*10^9. What is the most likely diagnosis?

      Your Answer: Haemophilia

      Correct Answer: Henoch-Schönlein Purpura (HSP)

      Explanation:

      The best answer is Henoch-Schönlein Purpura (HSP). This patient has a characteristic rash and the labs are consistent with this diagnosis.

    • This question is part of the following fields:

      • Cardiovascular
      12.9
      Seconds
  • Question 79 - Erythema multiforme is NOT triggered by which of the given infectious diseases? ...

    Incorrect

    • Erythema multiforme is NOT triggered by which of the given infectious diseases?

      Your Answer: CMV

      Correct Answer: Norovirus

      Explanation:

      Certain infections and medications cause characteristic skin lesions, which are the result of hypersensitivity reactions to these agents. A skin rash characterized by the eruption of macules, papules, and target-like circular lesions is referred to as erythema multiforme. The target or iris lesions appear rounded with a red centre surrounded by a pale ring, which in turn is surrounded by a dark red outer ring. These are acute and self-limiting with a propensity for distal extremities. The most common infectious cause is the infection with herpes simplex virus 1 and 2 to a lesser extent. Other notable infectious causes of erythema multiforme include Mycoplasma pneumoniae, cytomegalovirus, HIV, hepatitis c virus, varicella zoster virus, adenovirus, and some fungal infections. Norovirus infection has not been implicated in the aetiology of erythema multiforme.

    • This question is part of the following fields:

      • Dermatology
      10.4
      Seconds
  • Question 80 - A 12 year old boy with type I diabetes was reluctant to go...

    Incorrect

    • A 12 year old boy with type I diabetes was reluctant to go to school. According to him, he was unhappy at the school. Which of the following is the next appropriate step?

      Your Answer: Special school

      Correct Answer: Clinical psychologist

      Explanation:

      The child’s problem should be assessed properly to find the reason for unhappiness at the school. There can be many reasons such as bullying at school, abuse etc. A clinical psychologist should assess this child to take the necessary details and plan the further management.

    • This question is part of the following fields:

      • Endocrinology
      30
      Seconds
  • Question 81 - Intussusception is characterized by which of the following statements? ...

    Correct

    • Intussusception is characterized by which of the following statements?

      Your Answer: It is associated with Meckel's diverticulum

      Explanation:

      Intussusception is one of the common causes of intestinal obstruction in children, resulting from the invagination or telescoping of one segment of the bowel into the other distal segment. It may induce bowel ischemia and necrosis, as well. It can occur as a complication of Meckel’s diverticulum. It usually occurs proximal to the ileocecal valve, and the most common presentation is ileocecal. Early signs and symptoms include cramping abdominal pain, nausea, vomiting, and pulling legs up to chest area. First line treatment includes resuscitation with IV fluids and nasogastric tube. It responds well to air-enema, which is also diagnostic.

    • This question is part of the following fields:

      • Emergency Medicine
      43
      Seconds
  • Question 82 - Children with eczema herpeticum exhibit which of the following features? ...

    Incorrect

    • Children with eczema herpeticum exhibit which of the following features?

      Your Answer: Incubation period is 2-3 days after contact with Herpes Simplex virus

      Correct Answer: Atopic children have reduced immunity to the herpes simplex virus

      Explanation:

      Eczema herpeticum is a form of Kaposi varicelliform eruption, characterized by extensive vesicular skin eruptions that arise from a pre-existing skin condition, usually atopic dermatitis. The most common pathogen is the herpes simplex virus type 1, which has a higher propensity of attacking the epidermis already damaged by atopic dermatitis. The incubation period of the illness is 5-14 days. The eruption is initially small, monomorphic, dome-shaped papulovesicles that rupture to form tiny punched-out ulcers. It is diagnosed by taking viral swabs for culture.

    • This question is part of the following fields:

      • Dermatology
      12.4
      Seconds
  • Question 83 - A 6-year-old boy was admitted with a burn that looks third or fourth...

    Incorrect

    • A 6-year-old boy was admitted with a burn that looks third or fourth degree upon inspection. He has not stopped crying. What is the most appropriate next step?

      Your Answer: Antibiotic

      Correct Answer: IV fluid start

      Explanation:

      The boy needs re-hydration due to his full thickness burn so IV fluids is the next most appropriate step. The greatest loss of plasma occurs in the first 12 hours after burn injury. The plasma loss then slowly decreases during the second 12 hours of the post-burn phase, although extensive leakage can continue for up to three days (Ahrns, 2004). Optimal fluid replacement during this period is essential to ensure cardiac output and renal and tissue perfusion. Usually, 36 hours post-burn, capillary permeability returns to normal and fluid is drawn back into the circulation. Burns of more than 15% of surface body area in adults and of over 10% in children warrant formal resuscitation.The Parkland formula for the total fluid requirement in 24 hours is as follows:4ml x TBSA (%) x body weight (kg)|50% given in first eight hours|50% given in next 16 hours.Children receive maintenance fluid in addition, at an hourly rate of:4ml/kg for the first 10kg of body weight plus|2ml/kg for the second 10kg of body weight plus|1ml/kg for >20kg of body weight.End pointUrine – adults: 0.5–1.0 ml/kg/hour|Urine – children: 1.0–1.5ml/kg/hour.

    • This question is part of the following fields:

      • Emergency Medicine
      10.1
      Seconds
  • Question 84 - Which is not a variation of lichen planus? ...

    Correct

    • Which is not a variation of lichen planus?

      Your Answer: Sclerotic

      Explanation:

      The clinical presentation of lichen planus has several variations, as follows:- Hypertrophic lichen planus- Atrophic lichen planus- Erosive/ulcerative lichen planus- Follicular lichen planus (lichen planopilaris)- Annular lichen planus- Linear lichen planus- Vesicular and bullous lichen planus- Actinic lichen planus- Lichen planus pigmentosus- Lichen planus pemphigoides

    • This question is part of the following fields:

      • Dermatology
      6.4
      Seconds
  • Question 85 - Angelman’s syndrome is characterized by a gene deletion in which of the following...

    Incorrect

    • Angelman’s syndrome is characterized by a gene deletion in which of the following chromosomes?

      Your Answer: Chromosome 22

      Correct Answer: Chromosome 15

      Explanation:

      Angelman Syndrome is a genetic disorder that affects the nervous system. The features of this condition include intellectual disability, a delay in developmental milestones, and movement disorders. The features occur as a result of the deletion or mutation of the maternal copy of the UBE3A gene located on Chromosome 15q. Though individuals usually inherit one copy of this gene from each parent, only the maternal gene remains active in parts of the brain. This phenomenon is known as genetic imprinting, and is also seen in Prader-Willi syndrome.

    • This question is part of the following fields:

      • Genetics And Dysmorphology
      20.9
      Seconds
  • Question 86 - What percentage of infants born with meconium Ileus have cystic fibrosis? ...

    Incorrect

    • What percentage of infants born with meconium Ileus have cystic fibrosis?

      Your Answer: 60-90%

      Correct Answer: >90%

      Explanation:

      90% of patients with meconium ileus have cystic fibrosis (CF). Indeed, in 10 – 15% of cases of CF, the patient presents with meconium ileus.

    • This question is part of the following fields:

      • Paediatric Surgery
      12.4
      Seconds
  • Question 87 - Which of the following classification systems is used for categorizing scaphoid fractures? ...

    Correct

    • Which of the following classification systems is used for categorizing scaphoid fractures?

      Your Answer: Herbert classification

      Explanation:

      Scaphoid fractures are regarded as fractures that are difficult to heal, so a classification system is needed taking different factors into account that should lead towards proper guidance to the healing time and management of these fractures. Popular classification criteria are Herbert, Russe, and Mayo classification systems. Herbert’s classification system is based on the fracture’s stability and proposes that all complete bicortical fractures (except for tubercle fractures) are unstable. Salter-Harris classification is used for categorizing epiphyseal fractures, while Delbert classification system is reserved for fractures of the proximal femur in children. Fractures of the ankles are classified using Ottawa rules, and Garland classification is used for supracondylar fractures in children.

    • This question is part of the following fields:

      • Emergency Medicine
      72
      Seconds
  • Question 88 - An 18 year old, previously well boy was admitted following a generalized tonic-clonic...

    Incorrect

    • An 18 year old, previously well boy was admitted following a generalized tonic-clonic convulsion for 5 minutes with urinary incontinence and eye rolling. On examination, he was drowsy and had bilateral up going plantar reflexes. A short while ago he had been playing rugby and had taken a hit to the head. He was apparently normal for a few minutes before fitting. His blood sugar level was normal. Which of the following is the most probable reason for this presentation?

      Your Answer: Subdural haematoma

      Correct Answer: Post-traumatic seizure

      Explanation:

      The history is suggestive of a post-traumatic seizure which frequently occurs after moderate or severe traumatic brain injury. Although upgoing plantars can be identified in a post-ictal status, an intracranial bleed has to be excluded. A single seizure cannot be considered epilepsy

    • This question is part of the following fields:

      • Neurology
      32.1
      Seconds
  • Question 89 - An 8 year old male child of Afro-Caribbean descent complains of acute abdominal...

    Incorrect

    • An 8 year old male child of Afro-Caribbean descent complains of acute abdominal pain. Clinical examination reveals a soft abdomen. The boy is tachycardic and has an Hb of 6 g/dl. His mother says she noticed fresh rectal bleeding. What is the most probable diagnosis?

      Your Answer: Inflammatory Bowel Disease

      Correct Answer: Meckel's Diverticulum

      Explanation:

      Compared to the rest of the options, Meckel’s diverticulum with ectopic gastric mucosa seems to be the most probable diagnosis, as it can lead to fresh bleeding.Fresh red bleeding can be caused by haemorrhoids, polyps or a massive GI bleed.

    • This question is part of the following fields:

      • Paediatric Surgery
      9.1
      Seconds
  • Question 90 - A 17-year-old boy presents with a concern that he had not attained puberty....

    Incorrect

    • A 17-year-old boy presents with a concern that he had not attained puberty. He lacks secondary sexual characteristics and has altered smell and reduced testicular size. Which of the following hormone profiles with regard to FSH (follicle-stimulating hormone), LH (luteinizing hormone) and testosterone would fit a diagnosis of Kallman syndrome for this patient?

      Your Answer: Raised LH, FSH and testosterone

      Correct Answer: Reduced testosterone, reduced FSH and reduced LH

      Explanation:

      While the clinical scenario and the anosmic presentation of the child are highly suggestive of Kallmann’s syndrome, reduced testosterone, FSH and LH levels can confirm the diagnosis.Kallman’s syndrome is a recognised cause of delayed puberty secondary to hypogonadotropic hypogonadism. It is usually inherited as an X-linked recessive trait. Kallman’s syndrome is thought to be caused by a failure of GnRH-secreting neurons to migrate to the hypothalamus.Clinical features of Kallmann’s syndrome include:- Delayed puberty- Hypogonadism, cryptorchidism- Anosmia- Low sex hormone levels – Inappropriately low/normal LH and FSH levels- Some patients can present with associated cleft lip/palate and visual/hearing defects.

    • This question is part of the following fields:

      • Endocrinology
      15.5
      Seconds
  • Question 91 - A child presents with hypothyroidism. Which of the following features is characteristic of...

    Incorrect

    • A child presents with hypothyroidism. Which of the following features is characteristic of hypothyroidism?

      Your Answer: Microglossia

      Correct Answer: Prolonged neonatal jaundice

      Explanation:

      Congenital hypothyroidism is one of the most important diseases of the new-born, which may lead to mental and physical retardation when treatment is delayed or an appropriate dosage of thyroxine is not administered. The most alarming and earliest sign is jaundice, especially when it is prolonged, during the neonatal period.

    • This question is part of the following fields:

      • Endocrinology
      621.9
      Seconds
  • Question 92 - What is the most probable diagnosis in an infant with persistent neonatal hypoglycaemia...

    Incorrect

    • What is the most probable diagnosis in an infant with persistent neonatal hypoglycaemia and positive urine ketones?

      Your Answer: Hereditary fructose intolerance

      Correct Answer: Maple syrup urine disease

      Explanation:

      The most probable diagnosis for this patient is Maple syrup urine disease (MSUD).Note:- Healthy new-borns have blood sugars between 3.3 and 5 mmol/L- Neonatal hypoglycaemia is glucose < 2.2 mmol/L if measured in the first 3 days of life.- Neonatal hypoglycaemia is glucose < 2.5 mmol/L after the first 3 days of life.Causes of persistent hypoglycaemia include:- Preterm- IUGR- SGA- Hyperinsulinism due to maternal diabetes- Beckwith-Wiedemann syndrome- Hypoxia at birth- Sepsis- Cardiopulmonary disease- Inborn errors of metabolism- Hepatic enzyme deficiencies- Glycogen storage disease

    • This question is part of the following fields:

      • Neonatology
      20.5
      Seconds
  • Question 93 - Which of the following is true regarding group B beta-haemolytic Streptococcus? ...

    Incorrect

    • Which of the following is true regarding group B beta-haemolytic Streptococcus?

      Your Answer: Meningitis is more common in early disease

      Correct Answer: Group B beta-haemolytic Streptococcus (GBS) and Escherichia coli are the most common cause of early sepsis

      Explanation:

      Group B beta-haemolytic Streptococcus (GBS) and Escherichia coli are the most common cause of early sepsis. Group B Streptococcus (GBS), also known as Streptococcus agalactiae, is best known as a cause of postpartum infection and as the most common cause of neonatal sepsis. The GBS organism colonizes the vagina, GI tract, and the upper respiratory tract of healthy humans. GBS infection is almost always associated with underlying abnormalities. In elderly persons aged 70 years or older, GBS infection is strongly linked with congestive heart failure and being bedridden.Penicillin remains the drug of choice for group B streptococcal infection but resistance may occur.

    • This question is part of the following fields:

      • Neonatology
      20.5
      Seconds
  • Question 94 - A 16-year-old boy is brought to the ER by his friends. He fell...

    Incorrect

    • A 16-year-old boy is brought to the ER by his friends. He fell off his quad bike while riding it at a high speed. He complains of neck pain and paraesthesia in his limbs. On examination, there are multiple bleeding contusions on the body. There is a handlebar bruise on his chest. And oxygen saturations are low, but heart rate is normal. Which of the following is the most likely causing his shock?

      Your Answer: Septic

      Correct Answer: Neurogenic

      Explanation:

      Neurogenic shock is a devastating consequence of spinal cord injury (SCI), also known as vasogenic shock. Injury to the spinal cord results in sudden loss of sympathetic tone, which leads to the autonomic instability that is manifested in hypotension, bradyarrhythmia, and temperature dysregulation. Spinal cord injury is not to be confused with spinal shock, which is a reversible reduction in sensory and motor function following spinal cord injury. Neurogenic shock is associated with cervical and high thoracic spine injury. Early identification and aggressive management are vital in neurogenic shock to prevent secondary spinal injury.

    • This question is part of the following fields:

      • Emergency Medicine
      7.5
      Seconds
  • Question 95 - All of the following drugs tend to worsen the symptoms of myasthenia gravis...

    Correct

    • All of the following drugs tend to worsen the symptoms of myasthenia gravis except?

      Your Answer: Prednisolone

      Explanation:

      Prednisone is used for the treatment of myasthenia gravis if there is no initial response to the anticholinesterase medications. Pyridostigmine can make the symptoms of myasthenia gravis worse if used  in the initial stages of treatment. 

    • This question is part of the following fields:

      • Pharmacology
      19.5
      Seconds
  • Question 96 - A 4 month old child, presenting with lower UTI has been treated with...

    Incorrect

    • A 4 month old child, presenting with lower UTI has been treated with Trimethoprim but there has been no improvement after 48 hours. What will be the next step in the management of this patient?

      Your Answer: Urgent DMSA scan

      Correct Answer: Micturating cystourethrogram

      Explanation:

      A micturating cystourethrogram (MCUG) is one type of imaging test also called a voiding cystourethrogram (VCUG). The MCUG can check whether the flow of urine from the child’s bladder is being blocked, or whether it goes up the wrong way. It can help diagnose certain conditions, including vesicoureteral reflux and posterior urethral valves.

    • This question is part of the following fields:

      • Genitourinary
      35.7
      Seconds
  • Question 97 - A 17 year old boy who was previously well and healthy presents to...

    Incorrect

    • A 17 year old boy who was previously well and healthy presents to the physician after his teachers complained of his dropping grades. On clinical examination, there are signs of chronic liver disease. The ultrasound reveals cirrhosis and the blood ceruloplasmin levels are low. Wilsons disease is suspected. Which of the following findings is most likely to be present in addition to the above findings?

      Your Answer: Cataract

      Correct Answer: Kayser–Fleischer rings

      Explanation:

      A minority of affected individuals may experience severe liver failure. This happens most frequently in people with Wilson’s disease during adolescence and more commonly in women. These individuals may rapidly develop signs and symptoms of liver disease, often associated with anaemia due to breakdown of red blood cells (haemolysis) and mental confusion. In some patients, liver disease does not reveal itself, and the patient develops neurologic (brain-related) symptoms. Common neurological symptoms of Wilson disease that may appear and progress with time include tremor, involuntary movements, difficulty swallowing (dysphagia), difficulty speaking and poor articulation (dysarthria), lack of coordination, spasticity, dystonic postures, and muscle rigidity. Almost all affected individuals with the neurological symptoms of Wilson’s disease have Kayser-Fleischer rings in their eyes that can be identified by a slit lamp examination.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      65.9
      Seconds
  • Question 98 - A 6 year old boy presented in the emergency department with a cough...

    Incorrect

    • A 6 year old boy presented in the emergency department with a cough and knee swelling after falling on the road. He had a non-blanching rash on his buttocks and investigations revealed: PT=13, APTT=71, Hgb=11, WBC=8, Plt=200. Which is the most likely diagnosis?

      Your Answer: HSP

      Correct Answer: Haemophilia

      Explanation:

      From the options mentioned here, the closest diagnosis is haemophilia. This is a mixed picture, as a purpuric rash on the buttocks does not correlate with this diagnosis. However, the most appropriate diagnosis is haemophilia.

    • This question is part of the following fields:

      • Haematology And Oncology
      8.1
      Seconds
  • Question 99 - Which of the following vaccinations is contraindicated in patients with malignancy undergoing chemotherapy?...

    Incorrect

    • Which of the following vaccinations is contraindicated in patients with malignancy undergoing chemotherapy?

      Your Answer: Pneumococcus

      Correct Answer: Rubella

      Explanation:

      MMR vaccine is a live vaccine. It contains measles, mumps and rubella. These vaccines should be avoided during chemotherapy and for 6 months after.

    • This question is part of the following fields:

      • Pharmacology
      44.2
      Seconds
  • Question 100 - A 17-year-old boy is brought to the endocrinologist by his parents who are...

    Incorrect

    • A 17-year-old boy is brought to the endocrinologist by his parents who are worried that he might have delayed growth as all his friends are taller than him. On examination, he has a preadolescent body habitus and no evidence of development of secondary sexual characteristics. Serum LH, FSH, and testosterone all match prepubertal range. Following an injection of GnRH, the LH and FSH concentrations increase only slightly. However, when the GnRH is given daily for 7 days, a normal response is elicited. Which of the following is the most likely causing this boy's delayed puberty?

      Your Answer:

      Correct Answer: A hypothalamic disorder

      Explanation:

      Hypogonadotropic hypogonadismIn Kallmann syndrome: impaired migration of GnRH cells and defective olfactory bulb → ↓ GnRH in hypothalamus → ↓ FSH and ↓ LH → ↓ testosterone and ↓ oestrogenIn hypothalamic and/or pituitary lesions: ↓ pituitary gonadotropins (↓ FSH and ↓ LH) → ↓ testosterone and ↓ oestrogen

    • This question is part of the following fields:

      • Endocrinology
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Paediatric Surgery (4/6) 67%
Neonatology (6/7) 86%
Fluid And Electrolytes (3/3) 100%
Neurology And Neurodisability (4/4) 100%
Dermatology (7/9) 78%
Genitourinary (0/2) 0%
Ophthalmology (1/1) 100%
Child Development (4/6) 67%
ENT (2/4) 50%
Cardiovascular (3/4) 75%
Epidemiology And Statistics (2/2) 100%
Endocrinology (8/11) 73%
Gastroenterology And Hepatology (7/8) 88%
Haematology And Oncology (2/4) 50%
Anatomy (2/2) 100%
Behavioural Medicine And Psychiatry (0/1) 0%
Respiratory (2/2) 100%
Genetics And Dysmorphology (4/5) 80%
Infectious Diseases (4/4) 100%
Nutrition (2/2) 100%
Pharmacology (2/3) 67%
Musculoskeletal (2/2) 100%
Adolescent Health (1/1) 100%
Emergency Medicine (5/5) 100%
Neurology (1/1) 100%
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