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Question 1
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A 6-year-old girl is brought to the hospital by concerned parents. The teachers of her school have brought to their attention that she struggles to see the whiteboard in class. The parents have also noticed that she has difficulty when looking at the computer.Except for being a nervous reader at times, the parents haven't noticed anything else unusual. She's otherwise healthy and plays well with her friends.What is the most probable diagnosis for this child?
Your Answer: Refractive error
Explanation:Based on the presentation, the child most probably is suffering from a refractive error.Astigmatism, myopia and high hypermetropia could all cause these symptoms. This child has difficulty in using vision for finer tasks such as reading. Mild to moderate refractive error would not impair the child’s ability to play or even watch television as for the child in question. Note: Refractive error is the most common treatable cause of reduced vision in children all over the world! Other options:- A congenital cataract is rare and retinal dystrophy is even rarer. – Amblyopia would suggest poor vision in only one eye, something that might not cause symptoms in this age group. – Parents or teachers would have probably noticed squint if it was present.
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This question is part of the following fields:
- Ophthalmology
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Question 2
Incorrect
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A 13-year-old boy complains of several episodes of collapse. He describes the majority of these episodes occurring when he is laughing. He states that he loses power in his legs and falls to the ground. He is alert throughout and recovers quickly. He also describes excessive daytime sleepiness with episodes in the morning of being awake but being unable to move his body. Examination is unremarkable. A diagnosis of narcolepsy is made. Which of the following is the first line treatment for excessive daytime sleepiness?
Your Answer: Dexamphetamine
Correct Answer: Modafinil
Explanation:Narcolepsy is a rare condition characterised by excessive daytime sleepiness, sleep paralysis, hypnagogic hallucinations, and cataplexy (sudden collapse triggered by emotion such as laughing or crying). There is no cure for narcolepsy. Treatment options include stimulants, such as methylphenidate (Ritalin) or modafinil (Provigil), antidepressants, such as fluoxetine (Prozac), citalopram (Celexa), paroxetine (Paxil), sertraline (Zoloft) and sodium oxybate (Xyrem). Modafinil has replaced methylphenidate and amphetamine as the first-line treatment of excessive daytime sleepiness (EDS).
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This question is part of the following fields:
- Neurology
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Question 3
Correct
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A 16-year-old has a right sided aortic arch which is visible on the echocardiography. Which of the following condition most likely predisposes to this finding?
Your Answer: Tetralogy of Fallot
Explanation:Several types of right-sided aortic arch exist, the most common ones being right-sided aortic arch with aberrant left subclavian artery and the mirror-image type. The variant with aberrant left subclavian artery is associated with congenital heart disease in only a small minority of affected people. The mirror-image type of right aortic arch is very strongly associated with congenital heart disease, in most cases tetralogy of Fallot. A right-sided aortic arch does not cause symptoms on itself, and the overwhelming majority of people with the right-sided arch have no other symptoms. However when it is accompanied by other vascular abnormalities, it may form a vascular ring, causing symptoms due to compression of the trachea and/or oesophagus.
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This question is part of the following fields:
- Cardiovascular
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Question 4
Incorrect
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A 4 month old child, presenting with lower UTI has been treated with Trimethoprim but there has been no improvement after 48 hours. What will be the next step in the management of this patient?
Your Answer: Midstream urine culture
Correct Answer: Micturating cystourethrogram
Explanation:A micturating cystourethrogram (MCUG) is one type of imaging test also called a voiding cystourethrogram (VCUG). The MCUG can check whether the flow of urine from the child’s bladder is being blocked, or whether it goes up the wrong way. It can help diagnose certain conditions, including vesicoureteral reflux and posterior urethral valves.
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This question is part of the following fields:
- Genitourinary
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Question 5
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A 5-day-old infant is admitted to the ward. She was born at full term by normal vaginal delivery weighing 3.48kg and has been breastfed since birth. She has now lost 11% of her birth weight and bilirubin is above the phototherapy line. On examination, her fontanelle is soft, CRT<2 seconds, she is active and alert. U&Es have been sent, and the sodium on a blood gas is 144. You have started phototherapy, but still, need to make a plan about fluids and feeding. Mother wants to continue breastfeeding but is also happy to introduce some formula milk. What is the MOST appropriate course of action?
Your Answer: Offer NG or cup feeds alongside breastfeeding
Explanation:Excessive weight loss is generally indicative of suboptimal feeding, and infants with excessive weight loss are potentially dehydrated or at risk of dehydration.Jaundice associated with suboptimal breastfeeding– this is classically associated with weight loss >10% and a vicious cycle of sleepiness that in turn leads to further poor feeding. In the absence of clinical signs of dehydration, no evidence suggests that overhydration is helpful. If the infant is dehydrated, hydration should be given as clinically indicated. However, if the infant can tolerate oral feeding, oral hydration with a breast milk substitute is likely to be superior to intravenous hydration because it reduces enterohepatic circulation of bilirubin and helps wash bilirubin out of the bowel.
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This question is part of the following fields:
- Nutrition
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Question 6
Correct
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A 2-month-old infant was brought to the paediatrics ward by her mother with a complaint of excessive crying during urination. The urine culture of the infant revealed E.coli. Which of the following investigations should be done next?
Your Answer: US
Explanation:Urine culture confirms a diagnosis of a UTI. A kidney ultrasound will be the next best investigation because it will help us to visualise the bladder, kidneys, and ureters to rule out any congenital obstruction in the urinary tract that might be the actual cause of infection in this 2-month old girl.
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This question is part of the following fields:
- Renal
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Question 7
Incorrect
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A 14-month-old girl was brought to the hospital by her mother, with complaints of a 0.5 cm cystic lump on the lateral aspect of her eyebrow. It has been present since birth but is slowly increasing in size. What is the most probable diagnosis?
Your Answer: Sebaceous cyst
Correct Answer: External angular dermoid
Explanation:The most probable diagnosis for this patient would be external angular dermoid.External angular dermoids typically form where there are overlapping tissue planes such as the midline. They contain a caseous material. The cysts are essentially benign in nature and are excised for cosmetic purposes or when they encroach on vision.Other options:- Branchial remnant typically presents as a supraclavicular pit.- Sebaceous cysts tend to be present on the scalp.- There is nothing in the clinical scenario to suggest a vascular malformation such as pigment change or ‘bag of worms’.- Lymphatic malformations are typically found in the neck or under the axilla.
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This question is part of the following fields:
- Paediatric Surgery
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Question 8
Correct
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When discussing child development with a parent, which one of the following motor skills would NOT be expected of a 3-year-old?
Your Answer: Catching a bounced ball
Explanation:Milestones of 3 years old:Social and Emotional:Copies adults and friends Shows affection for friends without prompting Takes turns in games Shows concern for crying friend Understands the idea of “mine” and “his” or “hers” Shows a wide range of emotions Separates easily from mom and dad May get upset with major changes in routineDresses and undresses self Language/Communication:Follows instructions with 2 or 3 steps Can name most familiar things Understands words like “in,” “on,” and “under” Says first name, age, and sexNames a friend Says words like “I,” “me,” “we,” and “you” and some plurals (cars, dogs, cats) Talks well enough for strangers to understand most of the time Carries on a conversation using 2 to 3 sentences Cognitive (learning, thinking, problem-solving):Can work toys with buttons, levers, and moving parts Plays make-believe with dolls, animals, and people Does puzzles with 3 or 4 pieces Understands what “two” means Copies a circle with pencil or crayon Turns book pages one at a time Builds towers of more than 6 blocks Screws and unscrews jar lids or turns door handle Movement/Physical Development:Climbs well Runs easily Pedals a tricycle (3-wheel bike) Walks up and down stairs, one foot on each step
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This question is part of the following fields:
- Child Development
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Question 9
Incorrect
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A 16-year-old female presents to the emergency department with recurrent epistaxis and a history of menorrhagia. The physician suspects Von Willebrand disease and requests for blood tests. Lab investigations reveal a prolonged bleeding time and thrombocytopenia. What is the most likely diagnosis?
Your Answer: Von Willebrand Disease type 1
Correct Answer: Bernard - Soulier syndrome
Explanation:Bernard- Soulier Syndrome results from a deficiency of platelet glycoprotein protein Ib, which mediates the initial interaction of platelets with the subendothelial components via the von Willebrand protein. It is a rare but severe bleeding disorder. Platelets do not aggregate to ristocetin. The platelet count is low, but, characteristically, the platelets are large, often the size of red blood cells, and may be missed on complete blood counts because most automatic counters do not count them as platelets.
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This question is part of the following fields:
- Haematology And Oncology
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Question 10
Correct
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A 15-year-old boy is brought to the clinic by his parents who are worried that their child has growth and pubertal delay. His father also had a similar pattern of growth and is as short as a teenager. Currently, he is on the 2nd centile for height, with delayed adrenarche and gonadarche. in order to confirm the most likely diagnosis, which of the following investigations would be the most useful?
Your Answer: Wrist X-ray for bone age
Explanation:A bone age study helps doctors estimate the maturity of a child’s skeletal system. It’s usually done by taking a single X-ray of the left wrist, hand, and fingers. It is a safe and painless procedure that uses a small amount of radiation. The bones on the X-ray image are compared with X-rays images in a standard atlas of bone development, which is based on data from large numbers of other kids of the same gender and age. The bone age is measured in years.
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This question is part of the following fields:
- Endocrinology
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Question 11
Incorrect
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What is the risk of an affected mother’s son inheriting the disease condition in an X-liked dominant condition?
Your Answer: 0%
Correct Answer: 0.5
Explanation:In the pattern of mendelian inheritance, X- linked dominant inheritance means that all who inherit the X chromosome will present with the condition. In the case of maternal x-linked inheritance, sons and daughters have an equal chance of inheriting the condition as there is a 50% chance of inheriting the defective X chromosome from their mother as opposed to a non affected X chromosome from their father. However, in paternal X-linked dominant inheritance, sons will be unaffected as they inherit a Y chromosome from their father while daughters are sure to inherit the defective X-chromosome.
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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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The father of a 3 month old baby presents to the child health clinic complaining that his child passes only one hard stool a day. He has tried to bicycle his legs and massage his abdomen but has not been successful. The baby seems to be growing well, and nothing of concern was found on clinical examination. What is the most appropriate next step?
Your Answer: Refer to paediatrics
Correct Answer: Advise extra water in between feeds
Explanation:According to the NICE guidelines, the frequency of stool passage is considered constipation when two or more of the following findings are present: Fewer than 3 stools a week, large hard stools, stools that resemble rabbit droppings| symptoms associated with defecation including distress, bleeding or straining| a history of previous episodes of a precious/current anal fissure. The child in the scenario fails to meet the criteria, and has no evidence of impacted faeces on examination. The best course of action is to encourage the parents to give the child more water to prevent dehydration, and feed the child a fibre rich diet including fruits, vegetables and high fibre bread.
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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 14-year-old female was found to have a 1/6 systolic ejection murmur on regular check-up and was subsequently referred to a cardiologist. A thorough physical examination reveals long upper extremities with thin slender fingers, with a high arched palate and excessive ligamentous laxity. Her thumb can be bent back easily to touch her radius. ECG reveals sinus bradycardia that is consistent with aerobic conditioning. She also had an echo done. In reference to her most likely diagnosis, which of the following is the most serious cardiac complication associated to this condition?
Your Answer: Critical aortic stenosis
Correct Answer: Aortic dissection
Explanation:Marfan syndrome is a disorder that affects the connective tissue found throughout the body, Marfan syndrome can affect many systems, often causing abnormalities in the heart, blood vessels, eyes, bones, and joints. The two primary features of Marfan syndrome are vision problems caused by a dislocated lens (ectopia lentis) in one or both eyes and aortic root disease, leading to aneurysmal dilatation, aortic regurgitation and dissection is the main cause of morbidity and mortality in Marfan syndrome.
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This question is part of the following fields:
- Genetics And Dysmorphology
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Question 14
Incorrect
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An 8 month old baby is admitted with vomiting. He is crying but is afebrile. Clinical examination reveals a diffusely tender abdomen, however, the doctor does not detect any palpable masses. Which of the following should you exclude first?
Your Answer: Gastroenteritis
Correct Answer: Intussusception
Explanation:Intussusception is an urgent condition that must be excluded first as it may lead to life-threatening complications.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 15
Incorrect
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Absence of which of the following milestones warrants further assessment in a 15-month-old child?
Your Answer: Copy a square
Correct Answer: Stand holding onto furniture
Explanation:By 15 months, it’s common for many toddlers to:- say three to five words.- understand and follow simple commands.- point to one body part.- walk alone and begin to run.- climb on furniture.- make marks with a crayon.- imitate activities, such as housework.
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This question is part of the following fields:
- Child Development
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Question 16
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: Serotonin syndrome
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 17
Correct
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According to NICE guidelines, which of the following should be avoided in breastfeeding women?
Your Answer: Lithium
Explanation:According to NICE guidelines:Do not offer lithium to women who are planning a pregnancy or pregnant, unless antipsychotic medication has not been effective.If antipsychotic medication has not been effective and lithium is offered to a woman who is planning a pregnancy or pregnant, ensure:the woman knows that there is a risk of fetal heart malformations when lithium is taken in the first trimester, but the size of the risk is uncertain. Lithium levels may be high in breast milk with a risk of toxicity for the baby.If a woman taking lithium becomes pregnant, consider stopping the drug gradually over 4 weeks if she is well. Explain to her that:stopping the medication may not remove the risk of fetal heart malformations and there is a risk of relapse, particularly in the postnatal period, if she has bipolar disorder.If a woman taking lithium becomes pregnant and is not well or is at high risk of relapse, consider:switching gradually to an antipsychotic or stopping lithium and restarting it in the second trimester (if the woman is not planning to breastfeed and her symptoms have responded better to lithium than to other drugs in the past) or continuing with lithium if she is at high risk of relapse and an antipsychotic is unlikely to be effective. If a woman continues taking lithium during pregnancy:- check plasma lithium levels every 4 weeks, then weekly from the 36th week. Adjust the dose to keep plasma lithium levels in the woman’s therapeutic range- ensure the woman maintains an adequate fluid balance- ensure the woman gives birth in the hospital- ensure monitoring by the obstetric team when labour starts, including checking plasma lithium levels and fluid balance because of the risk of dehydration and lithium toxicity- stop lithium during labour and check plasma lithium levels 12 hours after her last dose.
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This question is part of the following fields:
- Nutrition
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Question 18
Incorrect
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Which of the following is true of mother to child transmission in the case of a mother with HIV infection?
Your Answer: Intrauterine transmission of HIV occurs in up to 40% of untreated maternal infections
Correct Answer: The risk of HIV vertical transmission is increased by concurrent maternal Hepatitis C infection
Explanation:To prevent mother to child transmission in the case of an HIV infected mother, guidelines have been put in place in the that guide practices. During pregnancy the risk of intrauterine transmission is quite low, as is the risk of transmission during vaginal delivery. As a result the number of women that choose to have caesarean sections have fallen, with vaginal births increasing by 40%. One factor that can however increase the risk of mother to child HIV transmission is concurrent Hepatitis C infection which double the risk of vertical transmission.
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This question is part of the following fields:
- HIV
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Question 19
Incorrect
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A dental surgeon infiltrates local anaesthetic at the mandibular foramen to carry out a block of the right inferior alveolar nerve. Which of the following might occur as a result of the procedure?
Your Answer: Numbness of the side of the tongue
Correct Answer: Numbness of the lower teeth on the right side
Explanation:The inferior alveolar nerve supplies all the teeth of the respective hemimandible. It transverses the inferior alveolar canal and is a branch of the trigeminal nerve’s mandibular division. Therefore, in this case, the teeth of the right hemimandible will be numb.
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This question is part of the following fields:
- Anatomy
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Question 20
Incorrect
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A child presents with hypothyroidism. Which of the following features is characteristic of hypothyroidism?
Your Answer:
Correct Answer: Prolonged neonatal jaundice
Explanation:Congenital hypothyroidism is one of the most important diseases of the new-born, which may lead to mental and physical retardation when treatment is delayed or an appropriate dosage of thyroxine is not administered. The most alarming and earliest sign is jaundice, especially when it is prolonged, during the neonatal period.
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This question is part of the following fields:
- Endocrinology
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