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Question 1
Correct
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A child presents to the clinic with the complaints of pale stools and jaundice. Which of the following tests would be most helpful in establishing a diagnosis?
Your Answer: US abdomen
Explanation:The patient is most likely suffering from obstructive jaundice. Ultrasound of the abdomen is the superior diagnostic tool in detecting and assessing biliary system obstruction, because it is easy, available, accurate and non-invasive.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 2
Correct
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A 15-year-old girl has a 5-day history of fever, general malaise and headache and has developed diffuse raised oedematous papules. These lesions are typical of erythema multiforme. Which one of the following is true?
Your Answer: The lesions will heal without scarring
Explanation:Erythema multiforme lesions typically heal without scarring. Other options:- In erythema multiforme, lesions are typically symmetrical and acral, i.e. on the hands, feet and limbs. – HSV is a common cause of erythema multiforme in children, accounting for at least 50% of cases; the lesions typically have damaged skin in the centre and are dusky and bullous (in contrast to urticaria, where the centre of the lesion is normal).
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This question is part of the following fields:
- Dermatology
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Question 3
Incorrect
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A 15-year-old girl, known to have atopic eczema since she was six months old, presents because her parents are worried about several skin changes. They are concerned that they could be caused by topical steroid ointments. Which of the following is more likely to be present due to the disease, rather than as a side-effect of the treatment?
Your Answer: Easy bruising
Correct Answer: Hypopigmentation
Explanation:Hypopigmentation is a side-effect that is more likely to be due to eczema rather than topical steroids therapy.All the options provided are potential side-effects of topical steroid therapy. They are observed when the potency of the steroid used is too high, or the amount of drug used is too much.. FTU or fingertip unit application is what is recommended, with caution, in delicate areas such as the face. Hypopigmentation can occur in eczema and is a post-inflammatory response, in contrast to the total depigmentation which is seen in vitiligo. Chronic eczema causes lichenification of skin, where the epidermis is thickened, and not skin atrophy.
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This question is part of the following fields:
- Dermatology
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Question 4
Incorrect
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The mother of 6 months old girl tests positive for HIV. Doctors test her daughter as well and the results turn out to be positive for HIV, both by polymerase chain reaction (PCR) and serology. The girl is clinically healthy and seems to attain normal developmental milestones. Which of the following is the most appropriate next step?
Your Answer:
Correct Answer: Start co-trimoxazole prophylaxis immediately and plan to start antiretrovirals once further work-up is complete
Explanation:Infants exposed to maternal HIV and with positive results require immediate management with co-trimoxazole prophylaxis, regardless of their CD4 levels. Antiretroviral treatment is necessary as well but it could wait until further work-up is complete.
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This question is part of the following fields:
- HIV
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Question 5
Incorrect
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A 27-year-old pregnant female had a pre pregnancy BMI of 33 kg/m2. She is found to have gestational diabetes and ultrasonography estimates a fetal macrosomia. BP is 127/72 mmHg. This primigravida is at greatest risk for which of the following obstetric emergency?
Your Answer:
Correct Answer: Shoulder dystocia
Explanation:Shoulder dystocia occurs when the fetal anterior shoulder impacts against the maternal symphysis following delivery of the vertex. Less commonly, shoulder dystocia results from impaction of the posterior shoulder on the sacral promontory. Risk Factors for Shoulder DystociaMaternalAbnormal pelvic anatomyGestational diabetesPost-dates pregnancyPrevious shoulder dystociaShort statureFetalSuspected macrosomiaLabour relatedAssisted vaginal delivery (forceps or vacuum)Protracted active phase of first-stage labourProtracted second-stage labour
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This question is part of the following fields:
- Neonatology
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Question 6
Incorrect
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What serious side effect would you expect, after giving IV lorazepam to a 4-year-old boy suffering from febrile convulsions?
Your Answer:
Correct Answer: Apnoea
Explanation:Lorazepam is known to cause respiratory depression and finally apnoea as a side effect.
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This question is part of the following fields:
- Pharmacology
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Question 7
Incorrect
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A 13 year old patient presents in the A&E with a fracture of his left femur. He was a passenger in a car involved in a traffic accident. Upon clinical examination, his left posterior tibial and dorsalis pedis arteries are not palpable. Which of the following is most probably injured?
Your Answer:
Correct Answer: Femoral artery
Explanation:The femoral artery is the one accompanying the femoral shaft, being the most important blood supplier of the leg. Femoral artery injury during a femur shaft fracture is quite common as a result of blunt trauma.
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This question is part of the following fields:
- Musculoskeletal
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Question 8
Incorrect
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A new-born baby has an abdominal wall defect diagnosed antenatally. When admitted to the neonatal unit, there is a sac found covering a 3cm defect with what appears to be intestine; no liver is visible. The baby has no dysmorphic features other than a large tongue. What is the immediate danger with this baby?
Your Answer:
Correct Answer: Beckwith-Wiedermann syndrome, risk of hypoglycaemia
Explanation:Beckwith-Wiedemann Syndrome (BWS) was first characterized by Patients having abdominal wall defects, macrosomia, macroglossia, and enlarged adrenal glands. Since then, the clinical presentation has expanded to recognize hemihypertrophy/lateralized overgrowth, hyperinsulinism, omphalocele, and organomegaly as classic features of BWS.About 50% of children with BWS have hypoglycaemia and therefore patients with diagnosed BWS should be evaluated for hypoglycaemia. Hypoglycaemia in most BWS new-borns generally resolves within the first few days of life. However, in about 5% of patients that have hyperinsulinism, the severe prolonged hypoglycaemia requires escalated therapy ranging for medication (diazoxide) to partial pancreatectomy.
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This question is part of the following fields:
- Paediatric Surgery
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Question 9
Incorrect
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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:
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.
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This question is part of the following fields:
- Emergency Medicine
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Question 10
Incorrect
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A 5-year-old child was found to have orchidomegaly and splenomegaly. Blood tests show a WBC = 1.7 X 104/L, Hb = 7.1 g/dl and platelets = 44 X 104g/dl. His parents mention that he suffers from fatigue while at presentation he looks pale and has a fever. What is the most likely diagnosis?
Your Answer:
Correct Answer: Acute lymphoblastic leukaemia
Explanation:Acute lymphoblastic leukaemia (ALL) is an aggressive type of blood and bone marrow cancer which can appear in childhood. Signs of childhood ALL include: Fever, Easy bruising, Petechiae, Bone or joint pain, Painless lumps in multiple areas of the body, Weakness, fatigue or paleness, and Loss of appetite. Blood tests may show elevated white blood cells, decreased values of red blood cells and low platelet count.
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This question is part of the following fields:
- Haematology And Oncology
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Question 11
Incorrect
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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:
Correct 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 boosterť injection is indicated. There is experimental evidence that antibiotics of the tetracycline group, given soon after injury, may have prophylactic effect against tetanus.
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This question is part of the following fields:
- Infectious Diseases
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Question 12
Incorrect
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A child suffering from a chest infection is prescribed flucloxacillin. A few days later, he develops jaundice, dark urine, and pale stools. What is he suffering from now?
Your Answer:
Correct Answer: Cholestatic jaundice
Explanation:Due to its cholestatic properties, Flucloxacillin can block bile flow through the liver, leading to the accumulation of bilirubin in the blood, giving rise to jaundice. Dark urine is the result of excessive bilirubin in the blood being filtered by the kidney. As the bile doesn’t move into the small intestine, stools are pale.
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This question is part of the following fields:
- Pharmacology
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Question 13
Incorrect
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Which of the following statements is the most accurate regarding the anatomy and embryology of the thyroid gland?
Your Answer:
Correct Answer: Between the follicular cells are C cells
Explanation:The thyroid gland is one of the first endocrine glands to develop, and is formed from the endoderm of the epithelial tissue of the primitive pharynx. The mature gland is functionally made up of follicles with colloid which contain the pro hormone thyroglobulin. Thyroid hormone is synthesised at a cellular level and is stored as thyroglobulin, before its release as thyroid hormone, a major modulator of metabolism. In between the follicular cells are parafollicular, or C-cells which secrete parathyroid hormone or calcitonin which are responsible for calcium regulation in the body.
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This question is part of the following fields:
- Endocrinology
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Question 14
Incorrect
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Proteinuria is NOT a recognized feature of which of the following conditions?
Your Answer:
Correct Answer: Landau-Kleffner syndrome
Explanation:Proteinuria refers to an increased amount of protein excretion in urine, which should be greater than 100mg/m2 per day on a single spot urine collection. The limit is even more relaxed for infants and neonates. Proteinuria is a prominent manifestation of cystinosis, acute tubular necrosis, Fanconi syndrome, and celiac disease. Landau-Kleffner syndrome is a rare childhood convulsive disorder, associated with acquired aphasia and auditory verbal agnosia.
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This question is part of the following fields:
- Nephro-urology
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Question 15
Incorrect
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Which of the following statements is true regarding box plots?
Your Answer:
Correct Answer: Show distributionally outlying values and provide data summaries that are not unduly influenced by those outliers
Explanation:Box plots can be used to display numerical outcomes and give valid summaries (median and interquartile range or IQR) for any distributional form that the outcomes might take. Additionally, they show outlying values and provide data summaries that are not unduly influenced by those outliersOther options:- The box itself represents the interquartile range, with the two whiskers representing the variability outside the upper and lower quartiles.- Variability is represented with whiskers and feathers are used in fan charts.They are not as informative as showing the actual values but can be used to make comparisons of medians and IQRs between subgroups.
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This question is part of the following fields:
- Epidemiology And Statistics
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Question 16
Incorrect
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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:
Correct 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.
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This question is part of the following fields:
- Paediatric Surgery
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Question 17
Incorrect
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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:
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.
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This question is part of the following fields:
- ENT
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Question 18
Incorrect
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A lethargic 2-month child was brought in with symptoms of diarrhoea and vomiting for 6 days. What is the appropriate initial investigations?
Your Answer:
Correct Answer: Urea and electrolytes
Explanation:The most commonly requested biochemistry tests for renal function are the urea and electrolytes. They supply important information when it comes to homeostasis and excretion. Glomerular filtration rate is also the essential standard marker of kidney health and is assessed by checking the creatinine levels. In this case as the child has lost fluids and electrolytes, this test will indicate the extent of the loss and allow for more appropriate replacement.
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This question is part of the following fields:
- Fluid And Electrolytes
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Question 19
Incorrect
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A woman gave birth to an infant at 39 weeks' gestation. The infant has a pulse of 110 bpm, grimaces upon nasal stimulation and has good muscle tone. Moreover, the colour of the infant is pink except for the extremities, which are blueish. What is the infants APGAR score?
Your Answer:
Correct Answer: 7
Explanation:Apgar is a quick test performed on a baby at 1 and 5 minutes after birth. The 1-minute score determines how well the baby tolerated the birthing process. The 5-minute score tells the health care provider how well the baby is doing outside the mother’s womb. More specifically, five components are assessed and these are the appearance (A), the pulse (P), the grimace (G), the activity (A) and the respiration (R). A normal APGAR score is considered to be 10 points, 2 points given for each normal component. In this case, 1 point is given for the appearance due to the bluish extremities, 2 points are given for the pulse which is higher than 100 bpm, 1 point is given for the grimacing, 2 points are given for the activity due to the good muscle tone and 1 point is given for the respiration due to gasping. Total score is 7 points.
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This question is part of the following fields:
- Neonatology
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Question 20
Incorrect
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A term baby was born following a placental abruption. There was no respiratory effort and an undetectable heart rate initially. Baby is now 20 min old and has been intubated with regular ventilation breaths. Heart rate came up to 110/min following two rounds of chest compressions. Baby appears very pale. No drugs have been given. Oxygen saturations are currently 85% measured on the right hand despite FiO2 1.0. A venous cord gas shows pH 6.89, CO2 -8, BE -14, Hb 8. What is the next most appropriate step?
Your Answer:
Correct Answer: Umbilical venous catheter (UVC) placement
Explanation:Umbilical vein catheterization utilizes the exposed umbilical stump in a neonate as a site for emergency central venous access up to 14 days old. Umbilical vein catheterization can provide a safe and effective route for intravenous delivery of medications and fluids during resuscitation.The indication for umbilical vein catheterization is when there is a need for IV access in a neonate for resuscitation, transfusions, or short-term venous access when otherwise unobtainable.
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This question is part of the following fields:
- Neonatology
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Question 21
Incorrect
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A 12-year-old boy sustains a fracture to the medial third of his clavicle following a fall from his bicycle.Which vessel is at the highest risk of injury?
Your Answer:
Correct Answer: Subclavian vein
Explanation:Being anatomically situated immediately posterior to the subclavius muscle and the medial part of the clavicle, the subclavian vein is at the highest risk of injury in the above patient.As a direct tributary of the brachiocephalic vein, it’s injury poses a high risk of massive bleeding.The brachiocephalic vein rests on the first rib, below and in front of the third part of the subclavian artery, and then on scalenus anterior which separates it from the second part of the artery (posteriorly).Anatomy of the clavicle:The clavicle extends from the sternum to the acromion and helps prevent the shoulder falling forwards and downwards.
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This question is part of the following fields:
- Emergency Medicine
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Question 22
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 23
Incorrect
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Which of the following conditions is NOT a recognized cause of respiratory distress syndrome (SDLD)?
Your Answer:
Correct Answer: Maternal hypertension
Explanation:Insufficient surfactant production in premature infants leads to respiratory distress syndrome or surfactant deficient lung disease (SDLD), characterized by structurally immature lungs. There are many risk factors of this disease, some of them include male gender, caesarean section, infants of diabetic mothers, being the second born of the premature twins, perinatal asphyxia, sepsis, and hypothermia. Maternal hypertension is not a recognized risk factor for respiratory distress syndrome; instead, pregnancy-induced hypertension and chronic maternal hypertension are the protective factors against this disease.
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This question is part of the following fields:
- Neonatology
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Question 24
Incorrect
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A 6 year old child presents with a history of headache and a tonic-clonic seizure that lasted for three minutes. The doctor measures the blood pressure in all four limbs which is 180 mmHg. His creatinine is 60 ÎĽmol/l and he looks dehydrated. The kidneys look small and echogenic on ultrasound. Which of the following steps is most appropriate?
Your Answer:
Correct Answer: Ophthalmology assessment is indicated
Explanation:The child requires frequent BP evaluation every 15 to 30 minutes. Normalisation of his BP should be achieved in a 48h interval. An ophthalmology assessment is indicated to check for acute injury of the blood vessels in the eye due to the elevated blood pressure.
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This question is part of the following fields:
- Nephro-urology
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Question 25
Incorrect
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Neurofibromatosis is characterised by which of the following?
Your Answer:
Correct Answer: Scoliosis
Explanation:Neurofibromatosis (aka Von Recklinghausen’s disease) includes: neurofibrosarcomas, pheochromocytoma, optic nerve tumours, scoliosis and acoustic neuromas.
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This question is part of the following fields:
- Neurology
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Question 26
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:
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 27
Incorrect
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A 2-day old baby who suffered from voiding difficulties is diagnosed with hypospadias. Which of the following abnormalities is most often associated with this condition?
Your Answer:
Correct Answer: Cryptorchidism
Explanation:Hypospadias is an abnormality of anterior urethral and penile development. The urethral opening is located on the ventral aspect of the penis proximal to the tip of the glans penis, which, in this condition, is open. The urethral opening may be located as proximal as in the scrotum or perineum. The penis may also have associated ventral shortening and curvature, called chordee, with more proximal urethral defects.
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This question is part of the following fields:
- Nephro-urology
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Question 28
Incorrect
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A 1 day old premature baby boy is observed to be hypotonic and unresponsive. He was born by emergency caesarean section. Which of the following is most likely the cause?
Your Answer:
Correct Answer: Intraventricular haemorrhage
Explanation:Germinal matrix/intraventricular haemorrhage (GM/IVH) is a complication of premature delivery that can result in life-long medical and developmental consequences. Although GM/IVH can occur in term infants, haemorrhage in this group of infants remains distinct from periventricular haemorrhage (PVH)/IVH of the preterm infant. Several acquired lesions of the central nervous system (CNS) specifically affect infants born prematurely and result in long-term disability, including GM/IVH, periventricular white matter injury (e.g., cystic periventricular leukomalacia [CPVL], periventricular haemorrhagic infarction [PVHI]), haemorrhage, and diffuse injury to the developing brain.The physical examination is usually negative in germinal matrix/intraventricular haemorrhage (GM/IVH). Occasionally, severe GM/IVH may present with nonspecific systemic findings suggestive of cardiovascular collapse.One subgroup of infants with GM/IVH presents with the following:- A sudden unexplained drop in haematocrit levels- Possible physical findings related to anaemia (e.g., pallor, poor perfusion) or haemorrhagic shockAnother subgroup of infants with GM/IVH presents with extreme signs, including the following:- A sudden and significant clinical deterioration associated with anaemia, metabolic acidosis, glucose instability, respiratory acidosis, apnoea, hypotonia, and stupor is present.Physical findings related to these signs include poor perfusion, pallor or an ashen colour, irregularities of respiratory pattern, signs of respiratory distress including retractions and tachypnoea, hypotonia, and altered mental status (e.g., decreased responsiveness, coma).Additional neurologic signs, such as fullness of the fontanelles, seizures, and posturing, may also be observed. Progression can be rapid and may result in shock and death.Extradural haemorrhage also known as an epidural hematoma, is a collection of blood that forms between the inner surface of the skull and outer layer of the dura, which is called the endosteal layer. They are usually associated with a history of head trauma and frequently associated skull fracture. The source of bleeding is usually arterial, most commonly from a torn middle meningeal artery.A subdural haemorrhage (or hematoma) is a type of bleeding that often occurs outside the brain as a result of a severe head injury. It takes place when blood vessels burst between the brain and the leather-like membrane that wraps around the brain (the dura mater). The pooling blood creates pressure on the surface of the brain, causing a variety of problems.
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This question is part of the following fields:
- Paediatric Surgery
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Question 29
Incorrect
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Macrosomia is NOT commonly found in which of the following genetic abnormalities?
Your Answer:
Correct Answer: Silver-Russell syndrome
Explanation:Macrosomia can be defined as either a birth weight greater than 4kg or birth weight greater than 90% for the gestational age. Risk factors for macrosomia include maternal diabetes, excessive gestational weight gain, pre-pregnancy obesity, male gender, ethnicity, and advanced gestational age. Genetic conditions associated with macrosomia are Bardet-Biedl syndrome, Perlman syndrome, Beckwith-Wiedemann syndrome, and Prader-Willi syndrome. Silver-Russell syndrome is associated with intrauterine growth retardation and post-natal failure to thrive.
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This question is part of the following fields:
- Neonatology
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Question 30
Incorrect
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An 8 year old presents with pain in both his wrists and knees. Swelling is also observed. He has a history of a right red eye which did not resolve with antibiotics. What should you exclude first?
Your Answer:
Correct Answer: Iritis
Explanation:The child has symptoms and signs suggestive of an inflammatory arthropathy. This is why he should firstly be referred for an eye exam to exclude iritis or treat it if present. – Amblyopia is not directly associated with inflammatory arthropathies unless they had recurrent ocular involvement.- Blepharitis is not an associated finding in a child with inflammatory arthropathy.- Episcleritis may occur, and is often non-sight threatening, and therefore would not be the main cause for concern.- Optic neuropathy in juvenile inflammatory arthritis has been reported, although it is rare.
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This question is part of the following fields:
- Ophthalmology
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Question 31
Incorrect
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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:
Correct 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.
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This question is part of the following fields:
- Dermatology
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Question 32
Incorrect
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A 13 year old boy is admitted to the surgical ward with appendicitis. Medical history shows that he has been taking Metoclopramide. He is normally fit and well. However, he is reported to be acting strange and on examination, he is agitated with a clenched jaw and eyes are deviated upwards. What is his diagnosis?
Your Answer:
Correct Answer: Oculogyric crisis
Explanation:Answer: Oculogyric crisisOculogyric crisis is an acute dystonic reaction of the ocular muscles characterized by bilateral dystonic elevation of visual gaze lasting from seconds to hours. This reaction is most commonly explained as an adverse reaction to drugs such as antiemetics, antipsychotics, antidepressants, antiepileptics, and antimalarials. Metoclopramide is a benzamide selective dopamine D2 receptor antagonist that is used as an antiemetic, with side effects that are seen frequently in children.1 The most common and most important side effects of metoclopramide are acute extrapyramidal symptoms, which require immediate treatment. Acute dystonic reactions occur as contractions of the muscles, opisthotonos, torticollis, dysarthria, trismus, and oculogyric crisis.
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This question is part of the following fields:
- Emergency Medicine
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Question 33
Incorrect
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Which of the following is the most likely cause of microcephaly in an asymptomatic 3-year-old child whose head circumference is on the 3rd centile? Note that his height and weight are in the 75th centile.
Your Answer:
Correct Answer: Congenital rubella syndrome
Explanation:The most likely cause of microcephaly in an asymptomatic 3-year-old child is congenital rubella syndrome.Microcephaly is defined as head circumference > two standard deviations below the mean.The causes of microcephaly include:- Genetic disorders: Down syndrome, Edward syndrome, Patau syndrome, Williams syndrome, Angelman syndrome, and Rett syndrome.- Infective: Meningitis, toxoplasmosis, CMV, rubella, varicella, HIVand Zika.- Acquired causes: Severe brain malformations, neurodegenerative diseases, hypoxic-ischemic injury, infarction, antenatal exposure to drugs, alcohol, and other toxins. Severe malnutrition and uncontrolled phenylketonuria in the mother are other causes of microcephaly in children.- Craniosynostosis- Neurometabolic disorders- Early non-accidental trauma- Fanconi anaemia- Other causes include: Familial and nonfamilial nonsyndromic microcephalyMost children with microcephaly have one or several associated symptoms:- Developmental delay- Seizures- Visual abnormalities- Short stature
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 34
Incorrect
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A 10-year-old girl was brought to the clinic with complaints of a rash around her left wrist. Her mother recalls that the rash started to appear after the child started wearing a new bracelet for the past one week. What is this type of hypersensitivity reaction?
Your Answer:
Correct Answer: Type 4
Explanation:According to the Gell and Coombs classification of hypersensitivity reactions, the scenario provided is a type 4 (delayed) reaction.These reactions are mediated by T lymphocytes and cause contact dermatitis. Nickel, commonly found in cheap jewellery, is a common cause of contact dermatitis.Note:There are two main types of contact dermatitis:- Irritant contact dermatitis: It is a common, non-allergic reaction due to weak acids or alkalis (e.g. detergents). These are often seen on the hands. They present typically with erythema, and rarely, crusting and vesicles.- Allergic contact dermatitis: These are type IV hypersensitivity reactions and are often seen on the head following hair dyes.They typically present as acute weeping eczema which predominately affects the margins of the hairline rather than the hairy scalp itself. Treatment is usually with a potent topical steroid.Other options:- Allergic rhinitis is an example of a type 1 (immediate) reaction. It is an IgE mediated. It is a hypersensitivity to a previously innocuous substance.- Type 2 reactions are mediated by IgG and IgM, which binds to a cell, causing cell death. Goodpasture syndrome is an example of a type 2 hypersensitivity reaction.- Immune complexes mediate type 3 reactions. Rheumatoid arthritis is an example of a type 3 hypersensitivity reaction.
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This question is part of the following fields:
- Dermatology
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Question 35
Incorrect
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A 6 month old baby presents with uncontrollable movements of her hands and feet, shortly after being unconscious for a while. What is the most likely diagnosis?
Your Answer:
Correct Answer: Infantile spasm
Explanation:Infantile spasm belongs to the spectrum of seizure disorders. Infantile spasm manifests itself with loss of consciousness and jerky movements. The peak age of onset is between 4 and 6 months. Approximately 90% of infantile spasms begin before 12 months of age. It is rare for infantile spasms to begin during the first 2 weeks of life or after 18 months.
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This question is part of the following fields:
- Neurology
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Question 36
Incorrect
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A 15-day old baby was brought to the emergency department with constipation for 4 days. On examination, the abdomen of the baby was found to be distended and tender all over. No bowel sounds were heard. A sigmoid colon biopsy was carried out, which showed absent ganglion cells. What is the diagnosis?
Your Answer:
Correct Answer: Hirschsprung's disease
Explanation:Hirschsprung’s disease is characterized by congenital absence of the autonomic plexus (Meissner’s and Auerbach’s plexus) in the intestinal wall. Usually limited to the distal colon, it can occasionally involve the entire colon or even the small bowel. There is abnormal or absent peristalsis in the affected segment, resulting in continuous spasm of smooth muscle and partial/complete obstruction. This causes accumulation of intestinal contents and dilatation of proximal segment. Skip lesions are highly uncommon. This disease is seen early in life with 15% patients presenting in first month, 60% by 1 year of age and 85% by the age of 4 years. Symptoms include severe and complete constipation, abdominal distension and vomiting. Patients with involvement of ultra-short segments might have mild constipation with intervening diarrhoea. In older children, symptoms include failure to thrive, anorexia, and lack of an urge to defecate. On examination, an empty rectum is revealed with stool palpable high up in the colon. If not diagnosed in time, it can lead to Hirschsprung’s enterocolitis (toxic megacolon), which can be fulminant and lead to death. Diagnosis involves a barium enema or a rectal suction biopsy. Barium enema shows a transition in diameter between the dilated, normal colon proximal to the narrowed, affected distal segment. It is to be noted that barium enema should be done without prior preparation, which can dilate the abnormal segment, leading to a false-negative result. A 24-hour post-evacuation film can be obtained in the neonatal period -if the colon is still filled with barium, there is a high likelihood of Hirschsprung’s disease. Full-thickness rectal biopsy is diagnostic by showing the absence of ganglion cells. Acetylcholinesterase staining can be done to highlight the enlarged nerve trunks. Abnormal innervation can also be demonstrated by rectal manometry.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 37
Incorrect
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A 15-month-old child is due for his measles, mumps and rubella (MMR) vaccines. He is feverish due to an acute otitis media and the mother gives a family history of egg allergy. What is the most appropriate action?
Your Answer:
Correct Answer: Defer immunization for two weeks
Explanation:Vaccines should not be given to a feverish child.
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This question is part of the following fields:
- Immunology
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Question 38
Incorrect
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A 2-year-old baby sustained a wound to her hand whilst playing in the garden. She is unvaccinated as the parents are concerned regarding side effects. There is no contraindication to vaccinations. What is the most appropriate action?
Your Answer:
Correct Answer: Give complete DPT vaccine course
Explanation:A complete course of DPT should be given.
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This question is part of the following fields:
- Immunology
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Question 39
Incorrect
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A nuchal translucency measurement is taken from the nape of the foetus' neck to screen for Down's syndrome.Which of these is the embryological origin of this tissue?
Your Answer:
Correct Answer: Ectoderm
Explanation:The origins of the neural tube and the nape of the neck where nuchal translucency measurements are taken are from embryonic ectoderm.The structural development of the head and neck occurs between the third and eighth weeks of gestation. The 5 pairs of branchial arches, corresponding to the primitive vertebrae gill bars, that form on either side of the pharyngeal foregut on day 22 are the embryologic basis of all the differentiated structures of the head and neck. Each arch consists of 3 layers: an outer covering of ectoderm, an inner covering of endoderm, and a middle core of mesenchyme. These arches are separated further into external, ectoderm-lined pharyngeal clefts and internal, endoderm-lined pharyngeal pouchesA population of ectodermal cells adjacent to the neural fold and not included in the overlying surface (somatic) ectoderm gives rise to the formation of the neural crest. These neuroectodermal crest cells are believed to migrate widely throughout the developing embryo in a relatively cell-free enriched extracellular matrix and differentiate into a wide array of cell and tissue types, influenced by the local environment. Most connective and skeletal tissues of the cranium and face ultimately come from the derivatives of neural crest cells.
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This question is part of the following fields:
- Neonatology
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Question 40
Incorrect
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A 6-year-old girl develops central precocious puberty. Which of the following conditions is the most likely aetiology for her condition?
Your Answer:
Correct Answer: Hypothyroidism
Explanation:Precocious puberty is the attainment of normal pubertal biochemical and physical features at an abnormally early age. The age cut-offs commonly used to define precocious puberty are 8 years for females and 9 years for males. Precocious puberty may be central (true) or peripheral (false) based on the aetiology. Central precocious puberty is due to the premature activation of the hypothalamic-pituitary-gonadal axis, which in turn leads to the development of secondary sexual characteristics at an earlier than usual age. Central precocious puberty is mostly idiopathic, but other causes include congenital or prolonged, untreated hypothyroidism, congenital or acquired central nervous system pathologies, and several genetic syndromes like Silver-Russell syndrome. The other mentioned choices cause peripheral or false precocious puberty.
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This question is part of the following fields:
- Endocrinology
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Question 41
Incorrect
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An 8 year old male child presents with frequent and recurrent headaches and a history of dark-coloured urine. He has a blood pressure of 150/100 mmHg and normal serum urea and creatinine levels. Urine microscopy reveals erythrocytes and erythrocyte casts. His 24-hour urine protein is about 2 g. What is the most probable diagnosis?
Your Answer:
Correct Answer: Acute nephritic syndrome
Explanation:The child most likely has nephritic syndrome which is characterised by a reduced renal function, proteinuria of non-nephrotic range, haematuria, erythrocyte casts, and oedema. Polyarteritis nodosa usually occurs in middle-aged men but can also be seen in young children. It is accompanied by severe systemic manifestations such as fever, malaise, weight loss and myalgia.Renal cell carcinoma usually presents around 55 years with the classic triad of haematuria, loin pain and a unilateral mass in the flank.Polycystic kidney disease usually presents in adult life with acute loin pain and palpation of masses in the flanks.
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This question is part of the following fields:
- Nephro-urology
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Question 42
Incorrect
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A short 17-year-old girl with primary amenorrhea has pulmonary stenosis.What is the most likely diagnosis?
Your Answer:
Correct Answer: Noonan's syndrome
Explanation:Noonan syndrome is a condition that affects many areas of the body. It is characterized by mildly unusual facial features, short stature, heart defects, bleeding problems, skeletal malformations, and many other signs and symptoms.People with Noonan syndrome have distinctive facial features such as a deep groove in the area between the nose and mouth (philtrum), widely spaced eyes that are usually pale blue or blue-green in colour, and low-set ears that are rotated backwards. Affected individuals may have a high-arched palate, poor teeth alignment, and micrognathia. Many children with Noonan syndrome have a short neck, and both children and adults may have excess neck skin (also called webbing) and a low hairline at the back of the neck.Between 50 and 70 % of individuals with Noonan syndrome have short stature. At birth, they are usually a normal length and weight, but growth slows over time. Individuals with Noonan syndrome often have either a pectus excavatum or pectus carinatum. Some affected people may also have scoliosis.Most people with Noonan syndrome have some form of critical congenital heart disease. The most common heart defect in these individuals is pulmonary valve stenosis. Some have hypertrophic cardiomyopathy.A variety of bleeding disorders have been associated with Noonan syndrome. Some affected individuals have excessive bruising, nosebleeds, or prolonged bleeding following injury or surgery. Rarely, women with Noonan syndrome who have a bleeding disorder have excessive bleeding during menstruation (menorrhagia) or childbirth.Adolescent males with Noonan syndrome typically experience delayed puberty. They go through puberty starting at age 13 or 14 and have a reduced pubertal growth spurt that results in shortened stature. Most males with Noonan syndrome have undescended testes (cryptorchidism), which may contribute to infertility (inability to father a child) later in life. Females with Noonan syndrome can experience delayed puberty but most have normal puberty and fertility.Most children diagnosed with Noonan syndrome have normal intelligence, but a few have special educational needs, and some have an intellectual disability. Some affected individuals have vision or hearing problems. It has been estimated that children with Noonan syndrome have an eightfold increased risk of developing leukaemia or other cancers over age-matched peers.
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This question is part of the following fields:
- Endocrinology
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Question 43
Incorrect
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A 17-year-old boy is brought to the emergency after being stabbed in the upper arm and the median nerve is transected. Impaired function can be demonstrated in which of the following muscle/s?
Your Answer:
Correct Answer: Abductor pollicis brevis
Explanation:The median nerve is a peripheral nerve originating in the cervical roots C5-T1 of the brachial plexus. It supplies motor innervation to the anterior forearm flexors, the thenar muscles, and the two lateral lumbricals as well as sensory innervation to the lateral palm and anterior, lateral three and a half fingers. Motor and sensory deficits depend on whether the lesion is proximal (above the elbow) or distal (below the elbow). While proximal lesions present with the hand of benediction,ť distal lesions present with either the pinch signť (anterior interosseous nerve syndrome) or, in the case of carpal tunnel syndrome, with mildly impaired thumb and index finger motion. Both proximal lesions and carpal tunnel syndrome result in reduced sensation in the area of the thumb, index and middle finger. Anterior interosseus nerve syndrome does not cause any sensory deficits. Chronic injuries to the nerve result in atrophy of median nerve innervated muscles while acute injuries do not have this feature. Treatment is mostly conservative and focuses on rest and immobilization.
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This question is part of the following fields:
- Musculoskeletal
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Question 44
Incorrect
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A 3-year-old child choked on a foreign object, which was removed at the hospital. The parents are now asking for advice on how to manage future occurrences at home. What do you advise?
Your Answer:
Correct Answer: Turn the child on his back and give thumps
Explanation:Give up to five back blows: hit them firmly on their back between the shoulder blades. Back blows create a strong vibration and pressure in the airway, which is often enough to dislodge the blockage.
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This question is part of the following fields:
- ENT
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Question 45
Incorrect
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A 6 year old female presents with an increase in the size of her breasts and light hair on the border of the labia majora. Her mother worries she might be having premature puberty. What is her Tanner stage?
Your Answer:
Correct Answer: II
Explanation:Tanner stage two presents with the following: Downy hair, Breast bud palpable under areola (1st pubertal sign in females).Stage 1 (prepubertal) – elevation of papilla only – no pubic hairStage 2 – breast bud forms – sparse, slightly pigmented hair on labia majoraStage 3 – Breast begins to become elevated, extends beyond areola borders – hair becomes more coarse and curlyStage 4 – increased size and elevation. Areola and papilla form secondary mound – adult like, but sparing medial thighsStage 5 – final size, areola returns but papilla remains projected – hair extends to medial thighs
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This question is part of the following fields:
- Endocrinology
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Question 46
Incorrect
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A 15-year-old girl arrives at the hospital complaining of resting tremors in both arms. Ataxia and dysarthria are also observed along with occasional involuntary grimacing of the face. The patient is most likely suffering from which of the following?
Your Answer:
Correct Answer: Wilson's disease
Explanation: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.
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 47
Incorrect
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A 13-month-old boy presents to the hospital with a rash and breathing difficulties following routine vaccination. On examination, it was noted that he was developing swelling around the mouth and neck.What is the most appropriate next step to manage this child?
Your Answer:
Correct Answer: IM adrenaline 150 mcg (0.15ml of 1 in 1,000)
Explanation:The IM dose of adrenaline for anaphylaxis in:< 6 months: 150 micrograms (0.15ml 1 in 1,000)6 months – 6 years: 150 micrograms (0.15ml 1 in 1,000)6 – 12 years: 300 micrograms (0.3ml 1 in 1,000)Adult and child > 12 years: 500 micrograms (0.5ml 1 in 1,000)Anaphylaxis:Anaphylaxis is an acute, rapidly progressing, potentially life-threatening IgE mediated Type I hypersensitivity reaction.It involves the release of mediators from mast cells, basophils and inflammatory cells. It is characterised by oedematous swelling of the airway mucosa giving rise to dyspnoea and respiratory distress. The most common cause of anaphylaxis in children is a food allergy.Risk factors for death in patients with anaphylaxis include asthma, age 11+, peanut allergy, and delay in adrenaline administration.Management of anaphylaxis includes:- ABCD- Remove the allergen- IM adrenaline or Nebulised adrenaline- IV Hydrocortisone – pro re nata IV fluid support. – Followed by observation.
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This question is part of the following fields:
- Emergency Medicine
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Question 48
Incorrect
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Which of the following produces the maximum levels of cortisol in the body?
Your Answer:
Correct Answer: Zona fasciculata of the adrenal
Explanation:Zona fasciculata of the adrenal produces the maximum levels of cortisol in the body.Functions of cortisol:- Increases blood pressure: permits normal response to angiotensin II and catecholamines by up-regulating alpha-1 receptors on arterioles.- Inhibits bone formation: decreases osteoblasts, type 1 collagen and absorption of calcium from the gut, and increases osteoclastic activity.- Increases insulin resistance.- Increases gluconeogenesis, lipolysis and proteolysis.- Inhibits inflammatory and immune responses.- Maintains function of skeletal and cardiac muscle.An excess of corticosteroids in the body causes various symptoms that are a part of Cushing’s syndrome.
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This question is part of the following fields:
- Endocrinology
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Question 49
Incorrect
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A 5 week old boy presents for developmental assessment. Clinical examination reveals a bluish, well-circumscribed lesion located on the bridge of the nose. It measures 5 mm in diameter and feels firm to the touch. Parents admit that the mass was not present at birth. They have noticed that the lesion gets bigger when the baby cries and then it gets back to its initial size. Doctors suspect a capillary haemangioma. What would you advise the parents?
Your Answer:
Correct Answer: Arrange follow-up for the child in the outpatient clinic to monitor the growth of the lesion over the coming weeks
Explanation:Capillary haemangiomas (strawberry naevi) are very common benign tumours that may appear in infancy. This particular case requires a close follow-up to monitor the naevus’ size and make sure it doesn’t expand or gets bigger, affecting the baby’s visual field.It is more common in preterm babies and girls are 3x more commonly affected than boys. It presents at birth in 30%, and is a focal and solitary in 80% of cases, most commonly found on the head and neck (60%), followed by the trunk (25%) and extremities (15%).
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This question is part of the following fields:
- Dermatology
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Question 50
Incorrect
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A young boy presents with a soft swelling in the midline neck that moves with tongue protrusion. The swelling is present between the thyroid cartilage and the tongue. Which of the following is the most likely diagnosis?
Your Answer:
Correct Answer: Thyroglossal cyst
Explanation:The thyroglossal duct cyst is the most common congenital anomaly of the central portion of the neck. The thyroglossal duct cyst is intimately related to the central portion of the hyoid bone and usually elevates along with the larynx during swallowing. Thyroglossal cysts can be defined as an irregular neck mass or a lump which develops from cells and tissues left over after the formation of the thyroid gland during the developmental stages.
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This question is part of the following fields:
- ENT
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