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Question 1
Incorrect
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Jamila, a 16 year old girl, was brought to the emergency centre following a collapse and abnormal movements earlier at school today. The episode occurred when she was walking to her next lesson with her friends. Suddenly she told her friends that she felt scared and complained that her vision had become blurry. She was helped to a chair where she sat for 15 minutes speaking incoherently before collapsing to the floor. Her friends observed irregular jerking movements of her right leg and left arm. The movement continued for about 15 minutes after which she was able to sit up unsupported but could not speak for about 20 minutes. There was also bleeding from the tongue which she had bit during the episode. She had a similar episode yesterday at home while on a video call with her mother. Her father narrated that she suddenly dropped the phone, and her eyes began to roll up. She initially remained standing but fell to the floor after a minute. He noticed irregular movements of both her legs, and her eyes were tightly shut. The movements ended after 2 minutes after which she became responsive to questions, but her eyes remained closed. She was brought later in the day, and was discharged after routine investigations. Jamila is a GCSE candidate preparing for her mock examinations, and currently lives with her father as her mother works abroad. Which of the following is the most likely explanation for Jamila’s condition?
Your Answer: Complex partial epilepsy
Correct Answer: Non-epileptic attack disorder
Explanation:Non Epileptic attack disorder, also known as psychogenic non epileptic seizures, is a condition characterised by episodes of abnormal movement and behaviours that resemble seizures , but are not caused by electrical activity changes in the brain. It is believed that the disorder is caused by the brain’s response to overwhelming or stressful situations. In Jamila’s case, triggering conditions for her episodes may have been the absence of her mother, and the stress of her upcoming examinations. A diagnosis of generalised epilepsy is unlikely because this would require abnormal movement in all 4 limbs during an episode and a longer period of semi consciousness after. Cataplexy can also be ruled out as it does not involve a loss of consciousness which we see in Jamila’s case. Vasovagal syncope does not correspond with the history as there was no evidence of simultaneous collapse and responsiveness coupled with colour change and near spontaneous recovery when supine. A complex partial seizure may be possible in Jamila’s case, however the history of long duration, her eyes being tightly shut and the differences in presentation between the two episodes makes it less likely.
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 2
Correct
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A 16 year old female has been admitted to hospital after overdosing on paracetamol 4 hours ago. She has also consumed a large amount of alcohol. Her plasma paracetamol concentration is only just below a level which requires treatment. From the list of options, choose the most appropriate treatment option for this patient.
Your Answer: Refer to psychiatry ward
Explanation:As her paracetamol level is under the required treatment threshold, she requires no medical treatment. However, she has taken a simultaneous drug overdose and excessive alcohol consumption. These two factors together require psychiatric evaluation and so she should be referred to the psychiatry ward.
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This question is part of the following fields:
- Adolescent Health
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Question 3
Correct
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A 16-year-old girl presents to the clinic with a 4-month history of no menstrual bleeding. Menarche was at 11 years of age. She denies experiencing any headache or visual disturbances. Physical examination shows an overweight girl, with facial hair, acne vulgaris on the face and a deep voice. Abdominal examination shows no abnormalities and a pregnancy test is negative. Diagnosis can be confirmed with which of the following lab test?
Your Answer: Raised Testosterone
Explanation:Diagnostic criteria of PCOsAccording to the American Association of Clinical Endocrinologists, at least two of three of the criteria below are required for diagnosis of PCOS after excluding other causes of irregular bleeding and elevated androgen levels.Hyperandrogenism (clinical or laboratory)Oligo- and/or anovulationPolycystic ovaries on ultrasoundDiagnosis of PCOS is possible without the presence of ovarian cysts.Rule out any other causes of hyperandrogenism and anovulation.Blood hormone levels↑ Testosterone (both total and free) or free androgen index↑ LH (LH:FSH ratio > 2:1)Oestrogen is normal or slightly elevated A clinical picture of hyperandrogenism overrules any normal hormone levels and can fulfil a diagnostic criterium of PCOS.
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This question is part of the following fields:
- Adolescent Health
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Question 4
Correct
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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: 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.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 5
Incorrect
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A 10-month-old girl was diagnosed with a urinary tract infection.Which of the following is NOT a requirement to perform imaging studies in this child?
Your Answer:
Correct Answer: E.coli UTI
Explanation:E. coli accounts for the majority of UTI’s in children. If this child responds well to treatment and has no recurrence of his symptoms, then no form of imaging is required, as per NICE advice for children aged 6 months to 3 years. Had the child been less than 6 months of age, then a USS at 6 weeks would be necessary.Other options:- Pseudomonas causes atypical UTI. This warrants ultrasonography within the acute illness phase as it may reflect an underlying pathology and DMSA at 4-6 months.- Recurrent UTI is defined as two or more episodes of pyelonephritis OR 1 pyelonephritis and one cystitis OR 3 or more cystitis. It requires USS at six weeks and DMSA at 4-6 months.- Septicaemia is a sign of an atypical UTI. This requires USS within the acute illness as it may reflect an underlying pathology and DMSA at 4-6 months.- Unwell 48hrs post antibiotics is a sign of an atypical UTI. This requires USS within the acute illness as may reflect underlying pathology and DMSA at 4-6 months.
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This question is part of the following fields:
- Nephro-urology
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Question 6
Incorrect
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A 12 month old baby boy is taken to the office with a history of failure to thrive. He is observed to have a large head and to be small for his age. A cupped appearance of the epiphysis of the wrist is seen on the x-ray. Which condition is this linked to?
Your Answer:
Correct Answer: Rickets
Explanation:Answer: RicketsRickets is a disease of growing bone that is unique to children and adolescents. It is caused by a failure of osteoid to calcify in a growing person. The signs and symptoms of rickets can include:pain – the bones affected by rickets can be sore and painful, so the child may be reluctant to walk or may tire easily| the child’s walk may look different (waddling)skeletal deformities – thickening of the ankles, wrists and knees, bowed legs, soft skull bones and, rarely, bending of the spinedental problems – including weak tooth enamel, delay in teeth coming through and increased risk of cavitiespoor growth and development – if the skeleton doesn’t grow and develop properly, the child will be shorter than averagefragile bones – in severe cases, the bones become weaker and more prone to fractures.Marfan syndrome (MFS) is a genetic disorder of the connective tissue. The degree to which people are affected varies. People with Marfan tend to be tall and thin, with long arms, legs, fingers and toes. They also typically have flexible joints and scoliosis. The most serious complications involve the heart and aorta, with an increased risk of mitral valve prolapse and aortic aneurysm. Other commonly affected areas include the lungs, eyes, bones and the covering of the spinal cord.Ehlers-Danlos syndrome is a group of inherited disorders that affect your connective tissues — primarily your skin, joints and blood vessel walls. People who have Ehlers-Danlos syndrome usually have overly flexible joints and stretchy, fragile skin. This can become a problem if you have a wound that requires stitches, because the skin often isn’t strong enough to hold them.A more severe form of the disorder, called Ehlers-Danlos syndrome, vascular type, can cause the walls of your blood vessels, intestines or uterus to rupture. Osteoporosis is a disease in which bone weakening increases the risk of a broken bone. It is the most common reason for a broken bone among the elderly. Bones that commonly break include the vertebrae in the spine, the bones of the forearm, and the hip. Until a broken bone occurs there are typically no symptoms. Bones may weaken to such a degree that a break may occur with minor stress or spontaneously. Chronic pain and a decreased ability to carry out normal activities may occur following a broken bone.Osteoporosis may be due to lower-than-normal maximum bone mass and greater-than-normal bone loss. Bone loss increases after menopause due to lower levels of oestrogen. Osteoporosis may also occur due to a number of diseases or treatments, including alcoholism, anorexia, hyperthyroidism, kidney disease, and surgical removal of the ovaries.
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This question is part of the following fields:
- Musculoskeletal
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Question 7
Incorrect
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A 23-week-old neonate was delivered in triage following a quick delivery, there was no time for the administration of antenatal steroids. The baby was successfully intubated, and the first dose of surfactant had been given. Despite good chest wall movement and 2 min of chest compressions the heart rate remains very slow. The baby is approximately 18min old when the consultant arrives. Which of the following is the most appropriate next step in the management of this case?
Your Answer:
Correct Answer: Consider reorientating care
Explanation:The withdrawal and withholding of care has been reported in neonatology for over 30 years. ‘Withdrawal’ of life-saving treatment implies the elective discontinuation of ongoing life-supportive measures. ‘Withholding’ of treatment occurs when interventions necessary for immediate survival, such as surgical intervention or resuscitation (bag and mask/endotracheal ventilation, cardiac massage or adrenaline) are deliberately not administered.Withdrawal of treatment most commonly takes the form of withdrawing of ventilatory support. In the extremely premature neonate who has had poor response to bag and mask ventilation, this may mean stopping ventilation breaths, explaining to the parents the reason for discontinuation and offering comfort care according to the parents’ wishes. Parents should be prepared for the sequelae that may follow withdrawal from mechanical ventilation. The infant may become agitated secondary to hypoxia, display terminal gasping and, depending on the size and gestation of their infant, tachypnoea, intercostal recession or stridor may be evident. Parents may want to be involved in the extubation process. Following ventilator withdrawal, the length of time prior to death cannot be predicted and can be a significant cause of parental anguish if this is not explained. A side room and privacy should be made available for the family. NICE guidance suggests that women ‘should not be encouraged to hold their dead baby if they do not wish to’, although this is very much dependent on individuals.
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This question is part of the following fields:
- Neonatology
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Question 8
Incorrect
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A child presents for an endocrinological work-up. The doctors perform blood tests, an X-ray, a pelvic U/S and a brain MRI. Which of the following reasons would result in an advanced bone age?
Your Answer:
Correct Answer: Androgen excess
Explanation:Androgen excess is one of the most common causes of advanced bone age. It usually occurs in precocious puberty or congenital adrenal hyperplasia.
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This question is part of the following fields:
- Endocrinology
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Question 9
Incorrect
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An 8-year-old girl presents with a history of a bright red bloodstain in her underpants one day prior to consultation. Her mother reports that the girl started cycling lessons one week ago. How will you proceed with the investigation in this case?
Your Answer:
Correct Answer: Examination under Anaesthesia
Explanation:A local exam might not help in locating the cause of the bleeding because it might be underneath the superficial structures. A thorough examination should be done under GA to accurately locate the source of bleeding.
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This question is part of the following fields:
- Genitourinary
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Question 10
Incorrect
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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:
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.
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This question is part of the following fields:
- Musculoskeletal
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Question 11
Incorrect
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A 6 year old child who has been developing normally until the age of 18 months, is now being investigated for developmental delay. The girl started losing her acquired skills and stopped walking. During the clinical examination she is holding her hands together and twisting and turning them. What is the most probable diagnosis?
Your Answer:
Correct Answer: Rett syndrome
Explanation:Rett syndrome is a disorder that affects the brain and occurs most commonly in girls. It presents with a period of normal development followed by severe problems with language and communication, learning, coordination, and other brain functions.
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This question is part of the following fields:
- Genetics And Dysmorphology
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Question 12
Incorrect
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A thin 16-year-old girl has bilateral parotid swelling with thickened calluses on the dorsum of her hand. What is the single most likely diagnosis?
Your Answer:
Correct Answer: Bulimia nervosa
Explanation:Bulimia nervosa is a condition in which a person is involved in binge eating and then purging. This patient has swollen parotid glands. The glands swell in order to increase saliva production so that the saliva lost in the vomiting is compensated. This patient also has thickened calluses on the back of her hand. This is known as Russell’s sign. This occurs because of putting fingers in the mouth again and again to induce the gag reflex and vomit. The knuckles get inflamed in the process after coming in contact with the teeth multiple times.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 13
Incorrect
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A 5 month old girl was admitted to the emergency department with reduced movement of her right arm. History reveals she was born at term, 4.5 kg and via natural delivery. Her mother reports her head was stuck for a while before she was fully delivered. Postnatal examination revealed reduced movement of her right arm as well but was thought to improve over time. The baby cannot sit and her right arm is flaccid, internally rotated, adducted, and extended. The reflexes are absent in the right arm. Which of the following investigations would provide the most useful information?
Your Answer:
Correct Answer: MRI scan
Explanation:The vignette describes an infant with a sustained post-delivery brachial plexus injury that does not improve with time. MRI is the most appropriate intervention to assess the injury and evaluate the treatment options.
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 14
Incorrect
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Which of the given statements is characteristic of meningomyeloceles?
Your Answer:
Correct Answer: A cerebrospinal fluid (CSF) leak is common
Explanation:Myelomeningocele is the most common type of open neural tube defect and a serious central nervous system disorder associated with significant morbidity. It is also called open spina bifida since the dura, and arachnoid matter herniates through the defect in the vertebral column. The commonest association is the decreased folate levels during early pregnancy. The alpha-fetoprotein levels are raised in the amniotic fluid. CSF leak is a common presentation with associated macrocephaly and hydrocephaly. Prenatal surgical repair is linked to a better prognosis.
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 15
Incorrect
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A neonate has bilateral cleft palate, clenched hands with overlapping fingers, ventricular septal defect, and rocker bottom feet. What is the most likely diagnosis?
Your Answer:
Correct Answer: Trisomy 18
Explanation:The trisomy 18 syndrome, also known as Edwards syndrome, is a common chromosomal disorder due to the presence of an extra chromosome 18, either full, mosaic trisomy, or partial trisomy 18q. The condition is the second most common autosomal trisomy syndrome after trisomy 21.Currently, most cases of trisomy 18 are prenatally diagnosed, based on screening by maternal age, maternal serum marker screening, or detection of sonographic abnormalities (e.g., increased nuchal translucency thickness, growth retardation, choroid plexus cyst, overlapping of fingers, and congenital heart defects ).The main clinical features include prenatal growth deficiency, characteristic craniofacial features (dolichocephaly, short palpebral fissures, micrognathia external anomalies of the ears, and redundant skin at the back of the neck), distinctive hand posture (overriding fingers: index finger overlapping the third and 5th finger overlapping the 4th), nail hypoplasia, short hallux, underdeveloped thumbs, short sternum, and club feet and major malformations (particularly involving the heart).
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This question is part of the following fields:
- Genetics And Dysmorphology
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Question 16
Incorrect
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Which of the following patient populations is most likely to present with primary vesicoureteric reflux?
Your Answer:
Correct Answer: New-born girls
Explanation:Vesicoureteric reflex (VUR) is described as the retrograde flow of urine from the bladder into the ureter due to an incompetent uterovesical junction. In primary VUR the lower urinary tract functions normally, while secondary VUR is associated with a poorly functioning lower urinary tract. The incidence of VUR is highest in new-born girls. They can present with hydronephrosis, or urinary tract infections.
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This question is part of the following fields:
- Nephro-urology
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Question 17
Incorrect
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Which of the following features is not associated with Marfan's syndrome?
Your Answer:
Correct 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
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This question is part of the following fields:
- Genetics And Dysmorphology
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Question 18
Incorrect
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Which of the following is true regarding eczema herpeticum?
Your Answer:
Correct Answer: Herpes virus 1 and 2, Ebstein-Barr virus, Cytomegalovirus, and Varicella Zoster virus are all species of Herpesviridae
Explanation:Kaposi varicelliform eruption (KVE) is the name given to a distinct cutaneous eruption caused by herpes simplex virus (HSV) type 1, HSV-2, coxsackievirus A16, or vaccinia virus that infects a pre-existing dermatosis. Most commonly, it is caused by a disseminated HSV infection in patients with atopic dermatitis (AD) and, for this reason, is often referred to as eczema herpeticum (EH).Kaposi varicelliform eruption (KVE) is now known to occur in children of any age and in adults, however, most patients (56%) are aged 15-24 years.
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This question is part of the following fields:
- Dermatology
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Question 19
Incorrect
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A 1 year old baby boy is taken to the doctor by his mother who is concerned that she cannot feel his testis. On examination by the doctor, his testis are not palpable either in the scrotum or the inguinal region and cannot be seen on ultrasound either. Which of the following is the most appropriate next stage in management?
Your Answer:
Correct Answer: Laparoscopy
Explanation:Answer: LaparoscopyThe diagnostic accuracy of laparoscopy for impalpable testis is well recognized. Approximately 20% of undescended testes are truly impalpable, and laparoscopy is actually regarded as the gold standard for their localization| none of the currently available imaging techniques (ultrasound, computerized tomography, or magnetic resonance imaging) has proven to be 100% reliable in predicting the presence or absence of a testis.In this respect, not only can laparoscopy be considered the most reliable tool to provide information on the location of the testis but also to confirm its absence.Undescended testes in boys is a very common congenital abnormality in which one or both testes does not reach the bottom of the scrotum prior to birth. The incidence of the condition is 3–5% among all boys at birth, and decreases to 0.8–1% after 6 months of age.Males with undescended testes have a lower sperm count, poorer quality sperm, and lower fertility rate, compared to males whose testicles descend normally| the rate of subfertility increases with bilateral involvement and increasing age at the time of orchidopexy.
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This question is part of the following fields:
- Genitourinary
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Question 20
Incorrect
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An 11-year-old boy was brought to the hospital by his mother, who says that occasionally he tilts his head towards his right shoulder. She also remarked that his left eye seemed to move up suddenly when he looked towards his nose. Which of the following extraocular muscles is most likely to be affected in this child?
Your Answer:
Correct Answer: Superior oblique
Explanation:From the given scenario, the extraocular muscle affected in the child is superior oblique muscle. Point to remember:All of the extraocular muscles are supplied by the oculomotor nerve (3rd cranial nerve), except superior oblique (trochlear nerve/4th cranial nerve) and lateral rectus (abducens nerve/6th cranial nerve).The superior oblique muscle causes the eye to move downwards and medially. The unopposed inferior oblique, in this case, causes the eye to deviate upwards and medially. Children tend to tilt their head (torticollis) to the side opposite to the affected eye with their chin down toward the shoulder, and their face turned away from the affected side to decrease the diplopia.
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This question is part of the following fields:
- Ophthalmology
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Question 21
Incorrect
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A 9-year-old boy was conservatively managed for an appendicular mass. The parents enquire whether to have an interval appendicectomy to prevent the chances of having appendicitis again. What percentage of patients with conservatively managed appendix mass are likely to develop recurrent appendicitis?
Your Answer:
Correct Answer: 0-20%
Explanation:The chance of having appendicitis again after appendix mass is around 17% in children. While the traditional teachings by Hamilton Bailey recommend following the conservative Ochsner-Sherren regimen followed by an interval appendicectomy six weeks after the discharge of the patient, there remains a looming controversy whether to perform an interval appendicectomy or not.
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This question is part of the following fields:
- Paediatric Surgery
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Question 22
Incorrect
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A 10-year-old girl presents to the hospital with complaints of fever, painful joints, and a rash. Her parents insist that she was otherwise well except for a history of sore throat 2 weeks before.On examination, she appears quite unwell with a temperature reading of 38.5°C. She was found to be tachycardic, hypertensive and with an erythematous rash with raised edges noted on the anterior aspect of her abdomen. Her left ankle and right elbow joints are swollen, and she has multiple painless subcutaneous nodules under her skin. Auscultation revealed an apical mid-diastolic murmur. Blood investigations reveal leucocytosis and raised C-reactive protein (CRP) levels. Erythrocyte sedimentation rate (ESR) was also above normal limits for her gender and age. An ECG confirms the presence of a tachycardia, a prolonged PR interval, and flat inverted T waves.What is the most probable diagnosis for this child?
Your Answer:
Correct Answer: Rheumatic fever
Explanation:The most probable diagnosis for this child would be rheumatic fever due to a previous history of rheumatic fever, evidence of streptococcal disease from a throat swab, a raised ASO titre and a positive streptococcal antigen test or a leukocytosis.Acute Rheumatic Fever:ARF occurs because of an abnormal immune response to a streptococcal antigenic component. It has a latent period of 1–3 weeks and is more common in the lower socio-economic classes. It peaks at around 5–15 years of age and affects the blood vessels, joints, nervous system and subcutaneous tissues. It is characterised as an autoimmune disease, and there is a risk of rheumatic fever occurring after infection in 3% of the population. The recurrence is greater in younger children and increases with each attack. Duckett-Jones criteria:The diagnostic criteria for acute rheumatic fever.Major: – Pancarditis- Chorea (Sydenham’s) – Polyarthritis (flitting)- Erythema marginatum- Subcutaneous nodulesMinor criteria include the presence of arthralgia, fever, prolonged PR interval, raised ESR, raised CRP.Note that:To make the diagnosis of rheumatic fever: Two major and/or one major with two minor criteria are required. Evidence of a recent streptococcal infection with a raised ASO titre or an antiribonuclease B level is sufficient. Exceptions to this rule are mentioned below:- Chorea alone is diagnostic.- Insidious or late-onset carditis with no other explanation.- Rheumatic recurrence: The presence of one major and one minor criterion with a prior streptococcal disease that is recurring.Consequences of pericarditis include heart block, pericardial effusion, tachycardia, cardiomegaly, pericardial friction rub, congestive cardiac failure, valvular disease and a Carey–Coombes apical mid-diastolic rumbling murmur.New heart murmurs are often audible, including those of mitral regurgitation and aortic regurgitation. Skin nodules affect the perivascular tissues and are non-specific lesions resulting from fibroid degeneration.Management:Medication includes aspirin for the acute phase, non-steroidal anti-inflammatory drugs for arthritis, prednisolone for severe carditis, and high-dose penicillin for immediate management with antibiotic prophylaxis in the long term. Antibiotics may include penicillin V, erythromycin or benzylpenicillin. Diazepam and haloperidol may be required to control the chorea.
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This question is part of the following fields:
- Cardiovascular
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Question 23
Incorrect
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Which of the following findings is not commonly associated with Marfan's syndrome?
Your Answer:
Correct Answer: Hypoplastic dental enamel
Explanation:Marfan syndrome (MFS) is a spectrum of disorders caused by a heritable genetic defect of connective tissue that has an autosomal dominant mode of transmission. The defect itself has been isolated to the FBN1 gene on chromosome 15, which codes for the connective tissue protein fibrillin. Abnormalities in this protein cause a myriad of distinct clinical problems, of which the musculoskeletal, cardiac, and ocular system problems predominate.The most severe of these clinical problems include aortic root dilatation and dissection, which have historically been the causative factors in early patient demise. Skeletal deformities such as thoracolumbar scoliosis, thoracic lordosis, and pectus excavatum, may lead to pulmonary difficulties that include restrictive airway disease and cor pulmonale if the deformities are progressive and untreated. Finally, blindness may result from unrecognized and untreated glaucoma, retinal detachment, and cataracts.The skeleton of patients with MFS typically displays multiple deformities including arachnodactyly (i.e., abnormally long and thin digits), dolichostenomelia (i.e., long limbs relative to trunk length), pectus deformities (i.e., pectus excavatum and pectus carinatum), and thoracolumbar scoliosis. In the cardiovascular system, aortic dilatation, aortic regurgitation, and aneurysms are the most worrisome clinical findings. Mitral valve prolapse that requires valve replacement can occur as well. Ocular findings include myopia, cataracts, retinal detachment, and superior dislocation of the lens.Other features:General tall staturePectus excavatum or carinatumDisproportionately long, slender armsDisproportionately long digitsArachnodactylyFinger contracturesReduced extension of elbows (< 170 degrees)Protrusio acetabuli (intrapelvic displacement of the acetabulum)Pes planus (flat feet)HypermobilityArthralgiaJoint instabilityScoliosisKyphosisDolichocephalia (elongated face)High arched palateDental crowdingDental malocclusion
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This question is part of the following fields:
- Musculoskeletal
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Question 24
Incorrect
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Out of 30 children who are exposed to a chemical, 15 develop a disorder, compared to only 1 child out of 10 developing the same disorder who were not exposed.The following can be deduced from this information:
Your Answer:
Correct Answer: The relative risk of exposure to the chemical is 5
Explanation:Relative risk is the probability of an outcome occurring in an exposed group as compared to the probability of that outcome in an unexposed group. In the scenario given, 50% of the children exposed developed the disease while only 10% of the children who were unexposed developed the disease. The relative risk was therefore 50/10=5. There is no further information about whether the study was controlled, the confidence interval, or the type of study. It therefore cannot be confirmed whether the chemical is causative and if it should be avoided.
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This question is part of the following fields:
- Epidemiology And Statistics
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Question 25
Incorrect
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An 8-week-old baby was found to have bilateral cataracts. Further investigation revealed thrombocytopenia, a patent ductus arteriosus and hepatosplenomegaly. Which of the following is the most probable diagnosis?
Your Answer:
Correct Answer: Rubella
Explanation:The clinical presentation is suggestive of congenital rubella syndrome. The classic triad of presenting symptoms includes sensorineural hearing loss, ocular abnormalities (cataract, infantile glaucoma, and pigmentary retinopathy) and congenital heart disease (patent ductus arteriosus and pulmonary artery stenosis). Other findings in congenital rubella syndrome include CNS abnormalities (mental retardation, behavioural disorders, encephalographic abnormalities, hypotonia, meningoencephalitis, and microcephaly), hepatosplenomegaly, and jaundice.
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This question is part of the following fields:
- Infectious Diseases
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Question 26
Incorrect
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A 11 month old baby develops periumbilical abdominal discomfort and diarrhoea after having a sore throat and fever for a few days. He presents to the A&E department and an ultrasound is done which shows a 'target sign' on the right side of the abdomen. What is the best initial course of action?
Your Answer:
Correct Answer: Obtain intravenous access, administer fluids and antibiotics
Explanation:Answer: Obtain intravenous access, administer fluids and antibiotics.Intussusception is a condition in which one segment of intestine telescopes inside of another, causing an intestinal obstruction (blockage). Although intussusception can occur anywhere in the gastrointestinal tract, it usually occurs at the junction of the small and large intestines. The obstruction can cause swelling and inflammation that can lead to intestinal injury. The patient with intussusception is usually an infant, often one who has had an upper respiratory infection, who presents with the following symptoms:Vomiting: Initially, vomiting is nonbilious and reflexive, but when the intestinal obstruction occurs, vomiting becomes biliousAbdominal pain: Pain in intussusception is colicky, severe, and intermittentPassage of blood and mucus: Parents report the passage of stools, by affected children, that look like currant jelly| this is a mixture of mucus, sloughed mucosa, and shed blood| diarrhoea can also be an early sign of intussusceptionLethargy: This can be the sole presenting symptom of intussusception, which makes the condition’s diagnosis challengingPalpable abdominal massDiagnosis:Ultrasonography: Hallmarks of ultrasonography include the target and pseudo kidney signs.For all children, start intravenous fluid resuscitation and nasogastric decompression as soon as possible.
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This question is part of the following fields:
- Paediatric Surgery
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Question 27
Incorrect
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A strict gluten-free diet is a dietary treatment for coeliac disease.Which one of the following statements concerning the gluten-free diet is correct?
Your Answer:
Correct Answer: Buckwheat is suitable in a gluten-free diet
Explanation:Buckwheat is not wheat. It’s a seed rather than a grain, which means it’s gluten-free and safe for people with celiac disease and non-celiac gluten sensitivity. It is an excellent source of fibre and nutrients.
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This question is part of the following fields:
- Nutrition
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Question 28
Incorrect
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A 16-year-old female presents to the physician with vomiting. For the past 6 months she has been experiencing weight loss, poor appetite and lethargy. When the physician inquires about the possibility of these symptoms' beings self-induced, both the patient and her family deny. Lab reports show sodium 125 mmol/l, potassium 5.5 mmol/l, urea 7.9 mmol/l and creatinine 67 µmol/l. A blood gas shows a bicarbonate of 12.4 mmol/l. Which of the following is most likely causing these symptoms?
Your Answer:
Correct Answer: Addison’s disease
Explanation:Addison disease is adrenocortical insufficiency due to the destruction or dysfunction of the entire adrenal cortex. It affects glucocorticoid and mineralocorticoid function. The onset of disease usually occurs when 90% or more of both adrenal cortices are dysfunctional. The most common symptoms are fatigue, muscle weakness, loss of appetite, weight loss, and abdominal pain. Adrenal insufficiency can be caused by autoimmune disease or suddenly stopping steroid medicines used to treat other conditions, among other causes.
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This question is part of the following fields:
- Endocrinology
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Question 29
Incorrect
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A 15-year-old boy presented to a urologist with a complaint of blood in the urine and pain in his abdomen. On examination, abdominal swelling is present and blood pressure is elevated. Which of the following is the most appropriate investigation in this case?
Your Answer:
Correct Answer: Ultrasound
Explanation:Haematuria and abdominal swelling may indicate either polycystic kidney disease or a tumour. Because of the patient’s age, the likelihood of a tumorous growth is small, thus an ultrasound is the best choice for this case.
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This question is part of the following fields:
- Renal
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Question 30
Incorrect
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Which of the following findings is associated with genu valgus?
Your Answer:
Correct Answer: Out-toeing
Explanation:Gait variations in children are usually physiologically normal and only become a cause of concern when they persist or are associated with pain or other medical symptoms. Genu varus, also known as knock knees causes an outward rotation of the leg, leading the toes pointing outwards. The condition usually resolves by the age of 18 months. In comparison, in- toeing occurs with genu varus. Metatarsus adductus is also associated with an inward pointing of the toes.
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This question is part of the following fields:
- Musculoskeletal
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