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  • Question 1 - A 16-year-old girl is diagnosed with Chlamydia trachomatis infection. This infection can possibly...

    Correct

    • A 16-year-old girl is diagnosed with Chlamydia trachomatis infection. This infection can possibly result in which of the following complications?

      Your Answer: Fitz- Hugh- Curtis syndrome

      Explanation:

      Fitz-Hugh-Curtis syndrome (FHCS), or perihepatitis, is a chronic manifestation of pelvic inflammatory disease (PID). It is described as an inflammation of the liver capsule, without the involvement of the liver parenchyma, with adhesion formation accompanied by right upper quadrant pain. A final diagnosis can be made through laparoscopy or laparotomy via direct visualization of violin string-like adhesions or through hepatic capsular biopsy and culture. FHCS is a complication of PID. Microorganisms associated with PID are thought to spread in one of three ways:-Through spontaneous ascending infection, microbes from the cervix or vagina travel to the endometrium, through the fallopian tubes, and into the peritoneal cavity. Complications include endometritis, salpingitis, tubo-ovarian abscess, pelvic peritonitis, and perihepatitis.-Microbes can also spread via lymphatic channels such as an infection of the parametrium from an intrauterine device.-Finally, the hematogenous spread is also possible such as with tuberculosis.

    • This question is part of the following fields:

      • Adolescent Health
      37.9
      Seconds
  • Question 2 - A 15-year-old child with learning difficulties is referred to the endocrine clinic for...

    Correct

    • A 15-year-old child with learning difficulties is referred to the endocrine clinic for review. His lab results show hypocalcaemia and increased serum concentration of parathyroid hormone. On examination, there is subcutaneous calcification and a short fifth metacarpal in each hand.What is the treatment of choice in this case?

      Your Answer: Calcium and vitamin D supplementation

      Explanation:

      This child has pseudo hypoparathyroidism. It is a heterogeneous group of rare endocrine disorders characterized by normal renal function and resistance to the action of parathyroid hormone (PTH), manifesting with hypocalcaemia, hyperphosphatemia, and increased serum concentration of PTH.Patients with pseudo hypoparathyroidism type 1a present with a characteristic phenotype collectively called Albright hereditary osteodystrophy (AHO). The constellation of findings includes the following:Short statureStocky habitusObesityDevelopmental delayRound faceDental hypoplasiaBrachymetacarpalsBrachymetatarsalsSoft tissue calcification/ossificationThe goals of therapy are to maintain serum total and ionized calcium levels within the reference range to avoid hypercalcaemia and to suppress PTH levels to normal. This is important because elevated PTH levels in patients with PHP can cause increased bone remodelling and lead to hyper-parathyroid bone disease.The goals of pharmacotherapy are to correct calcium deficiency, to prevent complications, and to reduce morbidity. Intravenous calcium is the initial treatment for all patients with severe symptomatic hypocalcaemia. Administration of oral calcium and 1alpha-hydroxylated vitamin D metabolites, such as calcitriol, remains the mainstay of treatment and should be initiated in every patient with a diagnosis of pseudo hypoparathyroidism.

    • This question is part of the following fields:

      • Endocrinology
      159.4
      Seconds
  • Question 3 - A 6 month old female is brought by her parents who are concerned...

    Incorrect

    • 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 are wary of strangers

      Correct 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
      40.3
      Seconds
  • Question 4 - A 6 year old boy arrives at the clinic seven hours after having...

    Correct

    • A 6 year old boy arrives at the clinic seven hours after having injured his hand with a metal spike. Examination reveals a puncture wound 0.5 cm deep. His immunization schedule is uptodate. How will you manage this patient?

      Your Answer: Tetanus Ig + antibiotics

      Explanation:

      Cleansing and debridement is paramount in dealing with tetanus-prone wounds (severe crushing injuries, piercing wounds, blisters and burns are outstanding examples, particularly if contaminated with dirt, grass or other debris).Prophylaxis then is relatively easy in persons who have been actively immunized by toxoid injections. For them, a “booster” injection is indicated. There is experimental evidence that antibiotics of the tetracycline group, given soon after injury, may have prophylactic effect against tetanus.

    • This question is part of the following fields:

      • Infectious Diseases
      38.4
      Seconds
  • Question 5 - In a new drug trial, 1 out of 27 individuals who were given...

    Correct

    • In a new drug trial, 1 out of 27 individuals who were given the treatment experienced a side effect, compared to 0 out of the 25 patients given the placebo. Which of the following is true?

      Your Answer: Fisher’s exact test should be used to compare the significance of the difference

      Explanation:

      The Chi-squared test would have been a useful test to compare the proportions in the scenario. However, due to the small sample size, Fisher’s exact test can be applied to analyse the significance of the difference. Adequate information is not given to determine what sample sizes were used to test the efficacy of the treatment, and to tell whether the treatment should be discontinued without further analysis on the data.

    • This question is part of the following fields:

      • Epidemiology And Statistics
      42.2
      Seconds
  • Question 6 - A new-born baby is born with a midline lumbosacral cystic lesion. Occipitofrontal circumference...

    Correct

    • A new-born baby is born with a midline lumbosacral cystic lesion. Occipitofrontal circumference was above the 90th percentile.The next best step is?

      Your Answer: Cranial ultrasound

      Explanation:

      The baby may have hydrocephalus and no surgery can be done until it is excluded.Cranial sonography is an important part of neonatal care in general, and high-risk and unstable premature infants, in particular. It allows rapid evaluation of infants in the intensive care units without the need for sedation and with virtually no risk. Expectedly, sonography represents an ideal imaging modality in neonates due to its portability, lower cost, speed, and lack of ionizing radiations. Although there are numerous indications for cranial sonography, it appears to be most useful for detection and follow-up of intracranial haemorrhage, hydrocephalus, and periventricular leukomalacia (PVL).

    • This question is part of the following fields:

      • Neonatology
      26.4
      Seconds
  • Question 7 - A 3-year-old was brought to the ED after falling from his mothers arms....

    Correct

    • A 3-year-old was brought to the ED after falling from his mothers arms. The mother reports hearing a popping sound when his face hit the floor. Examination revealed swelling and bruising on the right mandible. Which of the following investigations should be ordered next?

      Your Answer: Facial X ray

      Explanation:

      The swelling and bruising on the mandible needs to be checked for fractures. A facial X-ray can adequately visualize this.

    • This question is part of the following fields:

      • ENT
      32.7
      Seconds
  • Question 8 - An adolescent girl has missed her period by six days, which is unusual...

    Incorrect

    • An adolescent girl has missed her period by six days, which is unusual given her regular 28-day cycle. Suspicious, she buys a urine pregnancy test kit and tests positive.The release of which of the following substances is stimulated by the sperm at the time of fertilization in order to prevent polyspermy?

      Your Answer: Potassium ions

      Correct Answer: Calcium ions

      Explanation:

      Fertilization occurs when the sperm reaches an egg released during ovulation. At the time of fertilization, the interaction of sperm with the zona pellucida stimulates the release of calcium. This process initiates a corona reaction that prevents polyspermy.

    • This question is part of the following fields:

      • Adolescent Health
      31.9
      Seconds
  • Question 9 - A baby is born to a mother who is known to have chronic...

    Correct

    • A baby is born to a mother who is known to have chronic hepatitis B. The mothers latest results are as follows:HBsAg PositiveHBeAg PositiveWhat is the most appropriate strategy for reducing the vertical transmission rate?

      Your Answer: Give the newborn hepatitis B vaccine + hepatitis B immunoglobulin

      Explanation:

      The Green Book guidelines report in an active infection (HBeAg+ and HBsAg+) to give the vaccine as well as immunoglobulin. If antibodies are present it is not active infection (anti-Hbe) and then in that case only the vaccine, and no immunoglobulin, would be given. The presence of HBeAg means a person is infectious and can transmit to other people.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      70.5
      Seconds
  • Question 10 - A 17-year-old teenage girl presents with a systolic blood pressure of 170 mmHg...

    Incorrect

    • A 17-year-old teenage girl presents with a systolic blood pressure of 170 mmHg in all four limbs. Femoral pulses are palpable. Physical examination revealed several large café-au-lait patches and axillary freckling. The girl’s father died of intracerebral haemorrhage associated with hypertension at the age of 50. Which one of the following is the most likely cause of hypertension in this patient?

      Your Answer: Polycystic kidney disease

      Correct Answer: Renal artery stenosis

      Explanation:

      The patient shows features of neurofibromatosis. The most likely cause for hypertension in this patient would be renal artery stenosis.Note:Neurofibromatosis is an inherited autosomal dominant disorder which could have affected this girl’s father, and she appears to have the classic skin lesions. A renal bruit might be heard in these patients. Polycystic kidney disease can occur in association with tuberous sclerosis, which also has skin lesions associated (different from those described in this patient). Most causes of hypertension in childhood have underlying renal causes, and a renal ultrasound with doppler is the first-line investigation of choice. Even if this is normal, further imaging would be indicated here, for example, isotope renal scans and angiography.

    • This question is part of the following fields:

      • Nephro-urology
      47.7
      Seconds
  • Question 11 - A 3-year-old boy presents with facial puffiness, frothy urine, lethargy and oliguria for...

    Incorrect

    • A 3-year-old boy presents with facial puffiness, frothy urine, lethargy and oliguria for two weeks. Urine analysis reveals proteinuria. Which of the following is the most appropriate treatment for this child?

      Your Answer: Cyclophosphamide

      Correct Answer: Prednisolone

      Explanation:

      The presentation is suggestive of nephrotic syndrome. A trial of corticosteroids is the first step in treatment of idiopathic nephrotic syndrome. Diuretics are useful in managing symptomatic oedema. Cyclosporin and cyclophosphamide are indicated in frequently relapsing and steroid dependant disease.

    • This question is part of the following fields:

      • Renal
      51.4
      Seconds
  • Question 12 - Two boys were playing when one of them brought the forearm of the...

    Incorrect

    • Two boys were playing when one of them brought the forearm of the other behind his back. This resulted in a stretching of the lateral rotator of the arm. Which of the following muscles was most likely to have been involved?

      Your Answer: Latissimus dorsi

      Correct Answer: Infraspinatus

      Explanation:

      There are two lateral rotators of the arm, the infraspinatus and the teres minor muscles. The infraspinatus muscle receives nerve supply from C5 and C6 via the suprascapular nerve, whilst the teres minor is supplied by C5 via the axillary nerve.

    • This question is part of the following fields:

      • Musculoskeletal
      18.4
      Seconds
  • Question 13 - A 14-year-old uncontrolled asthmatic is started on a steroid inhaler. Which of the...

    Incorrect

    • A 14-year-old uncontrolled asthmatic is started on a steroid inhaler. Which of the following is the most common adverse effect he might complain about?

      Your Answer: Glucose intolerance

      Correct Answer: Dysphonia

      Explanation:

      Usage of inhaled corticosteroids are less associated with systemic adverse effects. However they are associated with local complications including dental caries and most commonly dysphonia.

    • This question is part of the following fields:

      • Respiratory
      26.4
      Seconds
  • Question 14 - The clinical findings in infective endocarditis do NOT include which of the following?...

    Correct

    • The clinical findings in infective endocarditis do NOT include which of the following?

      Your Answer: Beau's lines

      Explanation:

      Infective endocarditis (IE) is an acute infective pathology of the endocardium secondary to some underlying cardiac pathology like VSD and TOF. Most commonly, it is bacterial in origin, caused by staphylococcus aureus in the majority of cases. Clinical features include fever, arthralgias, weight loss, anorexia, new-onset, or changing existing murmur. Skin manifestations include Osler’s nodes, Janeway lesions, splinter haemorrhages, and clubbing. Roth spots are conjunctival haemorrhages found in IE. Beau’s lines are not found in IE.

    • This question is part of the following fields:

      • Cardiovascular
      122.2
      Seconds
  • Question 15 - A 6 year old girl presents with a history of palpitations and light...

    Correct

    • A 6 year old girl presents with a history of palpitations and light headedness. Her heart rate is 200 beats per minute so you try with vagal manoeuvres and repeated boluses of adenosine up to a maximum dose of 500mcg/kg. What would you do next?

      Your Answer: Synchronous DC shock 1J/kg

      Explanation:

      According to APLS, your next step should be one of the following: synchronous DC shock, amiodarone, or cardiology advice for alternative antiarrhythmics.

    • This question is part of the following fields:

      • Emergency Medicine
      35.6
      Seconds
  • Question 16 - A cohort study is developed to assess the correlation between blood pressure and...

    Correct

    • A cohort study is developed to assess the correlation between blood pressure and working long hours. After 10 years of follow-up and for the 1050 individuals working less than 40 hours per week, 1000 patients had normal blood pressure and 50 patients were diagnosed with hypertension. For the 660 patients working more than 40 hours per week, 600 patients had normal blood pressure and 60 patients were diagnosed with hypertension. If you work more than 40 hours per week, what is the odds ratio of developing hypertension compared to the individuals working less than 40 hours per week?

      Your Answer: 2

      Explanation:

      An odds ratio (OR) is a measure of the association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure. Odds ratios are most commonly used in case-control studies, however they can also be used in cross-sectional and cohort study designs as well (with some modifications and/or assumptions). Wherea = Number of exposed casesb = Number of exposed non-casesc = Number of unexposed casesd = Number of unexposed non-casesOR=(a/c) / (b/d) = ad/bc

    • This question is part of the following fields:

      • Epidemiology And Statistics
      208.7
      Seconds
  • Question 17 - A 15-year-old girl presents with a history recurrent abdominal pain and intermittent diarrhoea...

    Correct

    • A 15-year-old girl presents with a history recurrent abdominal pain and intermittent diarrhoea over the past one year. During these episodes, she may pass 3-7 very loose stools with mucus. Recently, over the past two months, she has passed stools mixed with blood. Her mother also complaints although she has not lost weight, she has failed to gain the appropriate weight for age according to her growth chart. The child is yet to attain her menarche, and her mother suffers from vitiligo. Clinical examination was unremarkable.Blood investigations revealed:Hb: 12.3 g/dLESR: 38 mm on the first hourTotal and differential counts were within normal limits, and an autoantibody screen was negative.What is the next most relevant investigation you will order?

      Your Answer: Colonoscopy

      Explanation:

      This patient in question is most likely suffering from inflammatory bowel disease, probably ulcerative colitis. The most valuable investigation that can assess the severity and extent of the disease, including the opportunity to obtain biopsies is a colonoscopy.Other options:Barium studies and abdominal x-rays do not give sufficient information. While they can provide indicative evidence, only a colonoscopy-guided biopsy can confirm IBD.Radio-isotope scans will help in identifying a focus such as a Meckel’s diverticulum, and angiography is rarely indicated unless a vascular lesion is suspected of causing the intestinal bleed.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      80.5
      Seconds
  • Question 18 - A 15-year-old boy is brought to the clinic by his parents who are...

    Correct

    • A 15-year-old boy is brought to the clinic by his parents who are worried that their child has growth and pubertal delay. His father also had a similar pattern of growth and is as short as a teenager. Currently, he is on the 2nd centile for height, with delayed adrenarche and gonadarche. in order to confirm the most likely diagnosis, which of the following investigations would be the most useful?

      Your Answer: Wrist X-ray for bone age

      Explanation:

      A bone age study helps doctors estimate the maturity of a child’s skeletal system. It’s usually done by taking a single X-ray of the left wrist, hand, and fingers. It is a safe and painless procedure that uses a small amount of radiation. The bones on the X-ray image are compared with X-rays images in a standard atlas of bone development, which is based on data from large numbers of other kids of the same gender and age. The bone age is measured in years.

    • This question is part of the following fields:

      • Endocrinology
      74.8
      Seconds
  • Question 19 - An 8-month-old baby was investigated for failure to thrive. On examination, he was...

    Incorrect

    • An 8-month-old baby was investigated for failure to thrive. On examination, he was irritable with evidence of weight loss. His stools were pale, bulky and malodorous. What is the most appropriate test that can be done to confirm the diagnosis?

      Your Answer: Sweat Test

      Correct Answer: Jejunal Biopsy

      Explanation:

      Pale, bulky, malodorous stools are evidence of fat malabsorption syndrome. The diagnostic test is jejunal biopsy to rule out other differential diagnoses such as celiac disease, giardiasis or Crohn’s disease etc.

    • This question is part of the following fields:

      • Gastroenterology And Hepatology
      33.4
      Seconds
  • Question 20 - Which of the following conditions exhibits Koebner’s phenomenon? ...

    Correct

    • Which of the following conditions exhibits Koebner’s phenomenon?

      Your Answer: Vitiligo

      Explanation:

      Koebner’s phenomenon describes skin lesions that occur on damaged skin, usually in a linear fashion at the site of injury. Conditions which exhibit true Koebnerisation include psoriasis, lichen planus, lichen sclerosis, vitiligo, Kaposi sarcoma and SLE. Conditions such as erythema nodosum or multiforme, or Lyme disease and Impetigo do not exhibit Koebner’s phenomenon.

    • This question is part of the following fields:

      • Dermatology
      99.5
      Seconds
  • Question 21 - A 15-day old male baby was brought to the emergency department with sweating...

    Incorrect

    • A 15-day old male baby was brought to the emergency department with sweating and his lips turning blue while feeding. He was born full term. On examination, his temperature was 37.9°C, blood pressure 75/45 mmHg, pulse was 175/min, and respiratory rate was 42/min. A harsh systolic ejection murmur could be heard at the left upper sternal border. X-ray chest showed small, boot-shaped heart with decreased pulmonary vascular markings. He most likely has:

      Your Answer:

      Correct Answer: Tetralogy of Fallot

      Explanation:

      The most common congenital cyanotic heart disease and the most common cause of blue baby syndrome, Tetralogy of Fallot shows four cardiac malformations occurring together. These are ventricular septal defect (VSD), pulmonary stenosis (right ventricular outflow obstruction), overriding aorta (degree of which is variable), and right ventricular hypertrophy. The primary determinant of severity of disease is the degree of pulmonary stenosis. Tetralogy of Fallot is seen in 3-6 per 10,000 births and is responsible for 5-7% congenital heart defects, with slightly higher incidence in males. It has also been associated with chromosome 22 deletions and DiGeorge syndrome. It gives rise to right-to-left shunt leading to poor oxygenation of blood. Primary symptom is low oxygen saturation in the blood with or without cyanosis at birth of within first year of life. Affected children ay develop acute severe cyanosis or ‘tet spells’ (sudden, marked increase in cyanosis, with syncope, and may result in hypoxic brain injury and death). Other symptoms include heart murmur, failure to gain weight, poor development, clubbing, dyspnoea on exertion and polycythaemia. Chest X-ray reveals characteristic coeur-en-sabot (boot-shaped) appearance of the heart. Treatment consists of immediate care for cyanotic spells and Blalock–Taussig shunt (BT shunt) followed by corrective surgery.

    • This question is part of the following fields:

      • Cardiovascular
      0
      Seconds
  • Question 22 - A 16-year-old female presents to the clinic with complaints of unilateral facial weakness,...

    Incorrect

    • A 16-year-old female presents to the clinic with complaints of unilateral facial weakness, ipsilateral arm weakness, and slurring of speech. She also has a history of migraine and is currently using contraception. The physician makes a diagnosis of transient ischemic attack. Which method of contraception most likely contributed to her TIA?

      Your Answer:

      Correct Answer: Combined oral contraceptive pill

      Explanation:

      The risk of ischemic stroke in patients using combined oral contraceptives is increased in patients with additional stroke risk factors, including smoking, hypertension, and migraine with aura.

    • This question is part of the following fields:

      • Adolescent Health
      0
      Seconds
  • Question 23 - Isolated atrial septal defect is NOT characterized by which of the given findings?...

    Incorrect

    • Isolated atrial septal defect is NOT characterized by which of the given findings?

      Your Answer:

      Correct Answer: Diastolic murmur

      Explanation:

      ASD is an acyanotic congenital heart disease, characterized by the failure of the interatrial septum to form completely, which results in the mixing of left and right-sided blood. There are various types of ASD, some of them are ostium primum septal defect and patent foramen ovale. Clinical findings associated with ASD are a systolic ejection murmur, fixed splitting of second heart sound, prolonged PR interval, both left and right axis deviation (primum and secundum ASD, respectively). The most common finding is an incomplete right bundle branch block.

    • This question is part of the following fields:

      • Cardiovascular
      0
      Seconds
  • Question 24 - A 2-day old neonate is brought to the hospital with complaint of not...

    Incorrect

    • A 2-day old neonate is brought to the hospital with complaint of not having opened his bowels. On examination, the anus is not visible, and meconium is coming out of the urethra. Which of the following statements regarding this patient is most accurate?

      Your Answer:

      Correct Answer: This is an anorectal malformation with a recto urethral fistula, urgent defunctioning colostomy needed

      Explanation:

      Anorectal malformations (ARMS) are also known as imperforate anus (IA). This is an umbrella term for a group of birth defects which affect the anorectal area.During a normal bowel movement, solid waste passes from the colon (large intestine) to the rectum (the final section the colon) and through the anus. When a child has an ARM, the rectum and the anus do not develop properly.Some types of ARM can cause constipation, faecal and / or urinary incontinence, infections and other problems. Some of these problems are very minor and easy to treat, with great long-term prognosis. Others are complex and affect multiple areas of life, such as sexual function and urinary and bowel control.

    • This question is part of the following fields:

      • Paediatric Surgery
      0
      Seconds
  • Question 25 - Which of the following cranial nerves does not have both sensory and motor...

    Incorrect

    • Which of the following cranial nerves does not have both sensory and motor functions?

      Your Answer:

      Correct Answer: Abducens (CN VI)

      Explanation:

      Cranial nerves I, II, and VIII are considered purely afferent nerves since they conduct sensory information from the olfactory region, the retina of the eye, and the inner ear structures, respectively.Cranial nerves III, IV, VI, XI, and XII are considered purely efferent due to their motor output to the orbit, the neck, and the tongue.Cranial nerves V, VII, IX, and X are considered mixed cranial nerves due to the presence of afferent and efferent fibres with both sensory and motor components.

    • This question is part of the following fields:

      • Neurology And Neurodisability
      0
      Seconds
  • Question 26 - A 16 year old boy presented, complaining that an insect had lodged in...

    Incorrect

    • A 16 year old boy presented, complaining that an insect had lodged in his left ear. Which of the following can be considered as the most appropriate method to remove the insect?

      Your Answer:

      Correct Answer: Syringe the ear with warm water

      Explanation:

      Removal of foreign bodies from the ear is indicated whenever a well-visualized foreign body is identified in the external auditory canal. Insects are better extracted with suction than with forceps or hooks. From the given answers, irrigation with warm water is the most suitable answer.

    • This question is part of the following fields:

      • ENT
      0
      Seconds
  • Question 27 - A 13-year-old boy complains of chest pain. Examination reveals hypotension and tachycardia with...

    Incorrect

    • A 13-year-old boy complains of chest pain. Examination reveals hypotension and tachycardia with distended neck veins and a displaced trachea. What is the next appropriate management?

      Your Answer:

      Correct Answer: Needle thoracocenthesis

      Explanation:

      The patient history suggests a spontaneous tension pneumothorax which is a life-threatening situation in which excess air is introduced into the pleural space surrounding the lung. When there is a significant amount of air trapped in the pleural cavity, the increasing pressure from this abnormal air causes the lung to shrink and collapse, leading to respiratory distress. This pressure also pushes the mediastinum (including the heart and great vessels) away from its central position, e.g. deviated trachea, and diminishing the cardiac output. Tension pneumothoraxes cause chest pain, extreme shortness of breath, respiratory failure, hypoxia, tachycardia, and hypotension. These are definitively managed by insertion of a chest tube. However, in the emergency setting temporizing measures are needed while chest tube materials are being gathered. In these situations, urgent needle thoracostomy (also called needle decompression) is performed.

    • This question is part of the following fields:

      • Respiratory
      0
      Seconds
  • Question 28 - What post-birth event encourages closure of the ductus venosus in a new-born baby?...

    Incorrect

    • What post-birth event encourages closure of the ductus venosus in a new-born baby?

      Your Answer:

      Correct Answer: Umbilical cord clamping and separation from mother

      Explanation:

      After birth, the infant takes its first breath and is exposed to a myriad of stimuli. The pulmonary vessels dilate, and pulmonary vascular resistance (PVR) decreases remarkably while the systemic vascular pressure rises above the PVR. This allows blood from the right ventricle to enter the lungs for oxygenation. In most cases, this increased oxygenation, along with other factors, causes the ductal wall to constrict and the ductus arteriosus to close functionally. As left-sided pressures rise higher than right-sided pressures, the foramen ovale functionally closes. With the clamping of the umbilical cord and the cessation of blood flow, pressures in the portal sinus decrease. This causes the muscle in the sinus wall near the ductus venosus to contract. The lumen of the duct becomes filled with connective tissue, and, in two months, the ductus venosus becomes a fibrous strand embedded in the wall of the liver, thus establishing adult circulation.

    • This question is part of the following fields:

      • Neonatology
      0
      Seconds
  • Question 29 - Phagocytosis is the function of which of the following glial cells? ...

    Incorrect

    • Phagocytosis is the function of which of the following glial cells?

      Your Answer:

      Correct Answer: Microglia

      Explanation:

      The central nervous system comprises of two types of cells| neurons and neuroglial cells. Glial cells are the support cells that serve a number of important functions. Three types of neuroglia comprise the mature nervous system, which are ependymal cells, microglia, and macroglia. The macroglia are of two types oligodendrocytes and astrocytes. Microglia are the neuroglial cells that serve the function of phagocytosis since they are derived from the hematopoietic stem cells and share properties with tissue macrophages. They remove the cellular debris from the site of injury or normal cellular turnover by performing scavenger function.

    • This question is part of the following fields:

      • Neurology And Neurodisability
      0
      Seconds
  • Question 30 - A 4 year old boy presented with bruises on bilateral buttocks and thighs....

    Incorrect

    • A 4 year old boy presented with bruises on bilateral buttocks and thighs. His mother denied any history of trauma. The boy had a sore throat a few weeks ago. What is the most appropriate management of this patient?

      Your Answer:

      Correct Answer: Coagulation profile

      Explanation:

      This history is suggestive of Henoch-Schönlein Purpura following a respiratory infection. A typical rash involving thighs and buttocks is often seen in this age group. Coagulation profile is the suitable answer from the given answers.

    • This question is part of the following fields:

      • Haematology And Oncology
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Adolescent Health (1/2) 50%
Endocrinology (2/2) 100%
Child Development (0/1) 0%
Infectious Diseases (1/1) 100%
Epidemiology And Statistics (2/2) 100%
Neonatology (1/1) 100%
ENT (1/1) 100%
Gastroenterology And Hepatology (2/3) 67%
Nephro-urology (0/1) 0%
Renal (0/1) 0%
Musculoskeletal (0/1) 0%
Respiratory (0/1) 0%
Cardiovascular (1/1) 100%
Emergency Medicine (1/1) 100%
Dermatology (1/1) 100%
Passmed