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Question 1
Incorrect
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A new-born delivered at term with a birth weight of 2.5kgs was admitted to the NICU with suspected congenital TB. Her mother is HIV positive and is on HAART, recently diagnosed with tuberculosis 1 week ago. All of the following are features of congenital tuberculosis EXCEPT?
Your Answer: Hepatomegaly
Correct Answer: Diarrhoea
Explanation:Congenital TB symptoms typically develop during the second or third week of life and include poor feeding, poor weight gain, cough, lethargy, and irritability. Other symptoms include fever, ear discharge, and skin lesions.Signs of congenital TB include failure to thrive, icterus, hepatosplenomegaly, tachypnoea, and lymphadenopathy.
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This question is part of the following fields:
- HIV
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Question 2
Correct
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A 12-week antenatal scan reveals a massive neck swelling in the foetus. While assessing the mother, she is found to have mild learning difficulties, short stature and a heart murmur. What is the most probable diagnosis?
Your Answer: Noonan syndrome
Explanation:The most probable diagnosis in this patient is Noonan syndrome.Noonan syndrome is an autosomal dominant condition characterised by short stature, heart defects (mainly pulmonary stenosis) and learning difficulties. An affected foetus can present with a significant increase in the nuchal thickness or a cystic hygroma of the neck. The condition is variable, and an affected parent is often only diagnosed after the diagnosis in the child.
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This question is part of the following fields:
- Genetics And Dysmorphology
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Question 3
Correct
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A 11-year-old boy is referred to you following his seventh course of antibiotics in the last six years for lower respiratory tract infections. He also has a history of eczema for which he is currently on a topical steroid cream. His full blood count (FBC) report shows:Hb: 13.9 g/dLPlts: 65 x 10^9/LWCC: 12.3 x 10^9/L.Which of the following genes should you expect an abnormality in?
Your Answer: WASP
Explanation:The combination of frequent infections, eczema, and thrombocytopaenia are characteristic of Wiskott-Aldrich syndrome, which is due to an abnormality in the WASP gene. It is an X-linked recessive disorder that causes primary immunodeficiency owing to a combined B- and T-cell dysfunction.The other listed options are:1. PKD1: polycystic kidney disease2. CFTR: cystic fibrosis3. HFE1: haemochromatosis4. RET: multiple endocrine neoplasia, Hirschsprung’s disease
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This question is part of the following fields:
- Haematology And Oncology
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Question 4
Correct
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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: 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 5
Correct
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A 15-year-old boy is brought to the clinic with fever, cough, sore throat and bleeding gums. He has also noticed a rash on his legs. The coryzal symptoms started 3 weeks ago before which he was fit and well. He is currently not taking any medication and denies smoking, alcohol and using other illicit drugs. Examination reveals a pale child with bilateral subconjunctival haemorrhages, erythematous throat and some petechiae on his legs. there are no sign of lymphadenopathy or hepatosplenomegaly. investigations are as follows: Hb8.9 g/dlMCV: 110 flWBC: 2 x 109/lNeutrophils: 0.3 x 109/lLymphocytes:1.5 x 109/lPLT: 13 x 109/lReticulocytes: 30 x 109/l (normal range 20-100 x 109/l)Coagulation screen: normal. Bone marrow: hypoplastic. A urine dipstick reveals trace of blood in the urine. What is the patient most likely suffering from?
Your Answer: Aplastic anaemia
Explanation:Aplastic anaemia causes a deficiency of all blood cell types: red blood cells, white blood cells, and platelets. It is more frequent in people in their teens and twenties, but is also common among the elderly. It can be caused by heredity, immune disease, or exposure to chemicals, drugs, or radiation. However, in about one-half of cases, the cause is unknown.The definitive diagnosis is by bone marrow biopsy; normal bone marrow has 30-70% blood stem cells, but in aplastic anaemia, these cells are mostly gone and replaced by fat.First-line treatment for aplastic anaemia consists of immunosuppressive drugs, typically either anti-lymphocyte globulin or anti-thymocyte globulin, combined with corticosteroids, chemotherapy and ciclosporin. Hematopoietic stem cell transplantation is also used, especially for patients under 30 years of age with a related matched marrow donor.
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This question is part of the following fields:
- Haematology And Oncology
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Question 6
Incorrect
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A 3-year-old girl presented with faecal incontinence for 2 weeks. Abdominal examination revealed a mass in right lower quadrant. Which of the following is the most appropriate management for this girl?
Your Answer: Increased water intake
Correct Answer: Laxatives
Explanation:Laxatives have been shown to be beneficial in the treatment of chronic childhood constipation. Studies have shown that polyethylene glycol, mineral oil, magnesium hydroxide, and lactulose are effective and can be used for a prolonged periods without risk.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 7
Incorrect
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A 17-year-old boy presents with a concern that he had not attained puberty. He lacks secondary sexual characteristics and has altered smell and reduced testicular size. Which of the following hormone profiles with regard to FSH (follicle-stimulating hormone), LH (luteinizing hormone) and testosterone would fit a diagnosis of Kallman syndrome for this patient?
Your Answer: Raised FSH and LH and reduced testosterone
Correct Answer: Reduced testosterone, reduced FSH and reduced LH
Explanation:While the clinical scenario and the anosmic presentation of the child are highly suggestive of Kallmann’s syndrome, reduced testosterone, FSH and LH levels can confirm the diagnosis.Kallman’s syndrome is a recognised cause of delayed puberty secondary to hypogonadotropic hypogonadism. It is usually inherited as an X-linked recessive trait. Kallman’s syndrome is thought to be caused by a failure of GnRH-secreting neurons to migrate to the hypothalamus.Clinical features of Kallmann’s syndrome include:- Delayed puberty- Hypogonadism, cryptorchidism- Anosmia- Low sex hormone levels – Inappropriately low/normal LH and FSH levels- Some patients can present with associated cleft lip/palate and visual/hearing defects.
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This question is part of the following fields:
- Endocrinology
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Question 8
Incorrect
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A 16-year-old girl is brought to the emergency by her parents who report that she has had multiple collapsing episodes over the past week. Each time she would collapse with the eyes shut and regain consciousness after 2 to 5 min with general weakness. The collapse is not followed by a post ictal state. The patient feels well and normal between these episodes. Which of the following is the most likely diagnosis?
Your Answer: Pseudoseizure
Correct Answer: Vasovagal syncope
Explanation:A vasovagal episode or vasovagal syncope is the most common form of reflex syncope. Reflex syncope is a general term used to describe types of syncope resulting from a failure in autoregulation of blood pressure, and ultimately, in cerebral perfusion pressure resulting in transient loss of consciousness. The mechanisms responsible for this are complex and involve both depression of cardiac output as well as a decrease in vascular tone. Other types of reflex syncope include carotid sinus syncope and situational syncope, for instance, cough or micturition syncope. Vasovagal syncope may be triggered by pain or emotional upset, although frequently a specific trigger cannot be identified.
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This question is part of the following fields:
- Neurology And Neurodisability
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Question 9
Correct
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Intracellular shifting of hydrogen ions can generate a metabolic alkalosis. In which of the following conditions is metabolic alkalosis caused by this mechanism ?
Your Answer: Hypokalaemia
Explanation:Metabolic alkalosis is characterized by a primary increase in the concentration of serum bicarbonate ions. This may occur as a consequence of a loss of hydrogen ions or a gain in bicarbonate. Hydrogen ions may be lost through the kidneys or the GI tract, as for example during vomiting, nasogastric suction or use of diuretics. Intracellular shifting of hydrogen ions develops mainly during hypokalaemia to maintain neutrality. Gain in bicarbonate ions may develop during administration of sodium bicarbonate in high amounts or in amounts that exceed the capacity of excretion of the kidneys, as seen in renal failure. Fluid losses may be another cause of metabolic alkalosis, causing the reduction of extracellular fluid volume.
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This question is part of the following fields:
- Fluid And Electrolytes
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Question 10
Correct
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Which of the following classification systems is used for categorizing scaphoid fractures?
Your Answer: Herbert classification
Explanation:Scaphoid fractures are regarded as fractures that are difficult to heal, so a classification system is needed taking different factors into account that should lead towards proper guidance to the healing time and management of these fractures. Popular classification criteria are Herbert, Russe, and Mayo classification systems. Herbert’s classification system is based on the fracture’s stability and proposes that all complete bicortical fractures (except for tubercle fractures) are unstable. Salter-Harris classification is used for categorizing epiphyseal fractures, while Delbert classification system is reserved for fractures of the proximal femur in children. Fractures of the ankles are classified using Ottawa rules, and Garland classification is used for supracondylar fractures in children.
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This question is part of the following fields:
- Emergency Medicine
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Question 11
Incorrect
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A 13-year-old girl presents with episodes of feeling her heart racing and pounding, dizziness, and sweating. Her mother reports that she appears slightly pale and feels frightened during these episodes. These episodes occur at different times during the day and a few times a week. There is no clear history suggestive of a trigger. She has no other known medical problems. Which of the following is the most probable underlying cause for these episodes?
Your Answer: Atrio-ventricular re-entrant tachycardia (AVRT)
Correct Answer: Atrio-ventricular nodal re-entrant tachycardia (AVNRT)
Explanation:The most probable diagnosis for the patient in question is atrioventricular nodal re-entrant tachycardia (AVNRT).The presenting features of the patient are suggestive of supraventricular tachycardia (SVT). The most common form of SVT in children over 8 years old is atrioventricular nodal re-entrant tachycardia. It occurs as a result of an additional electrical circuit in or near the AV node itself.Other options:- Atrial Flutter: is a form of re-entry tachycardia within the atria which then becomes unsynchronised with the ventricles, which is not the case here. Furthermore, it is most common in babies and children with congenital heart disease.- Atrial tachycardia: is a condition where an area of atrium takes over the pacemaker activity of the heart. However, it is relatively uncommon.- Atrioventricular re-entrant tachycardia (AVRT): occurs due to an accessory electrical pathway between the atria and ventricles forming a re-entry circuit. This is the most common cause of SVT in children < 8 years old. One of the specific diagnoses of AVRT is Wolff-Parkinson-White syndrome. However, WPW syndrome is much rarer than AVNRT.- Premature atrial contractions (PACs): are very common in normal, healthy children and adolescents. Occasionally, they can give rise to the feeling of a 'skipped beat'. Fortunately, they are rarely associated with any significant underlying pathology or need to be treated.
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This question is part of the following fields:
- Cardiovascular
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Question 12
Incorrect
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A 13-year-old girl was recently diagnosed with type 1 diabetes mellitus about two weeks ago and started on an insulin pump. Which of the following complications is least likely to occur due to the treatment modality adopted?
Your Answer: Anaphylaxis
Correct Answer: Lipoatrophy
Explanation:Among the given options, lipoatrophy takes time to develop as it is a long-term complication of insulin therapy. Since it has only been two weeks since the initiation of insulin therapy, it is unlikely to occur so early.The risk of lipoatrophy is reduced with newer insulins and also can be avoided by site rotation.However, anaphylaxis, allergic reactions, infection and abscesses at the site of an insulin pump can occur in this patient as a complication of insulin therapy.
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This question is part of the following fields:
- Endocrinology
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Question 13
Incorrect
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A new-born at term with no significant family history presents with absent skin on both feet to mid-calf. The most appropriate thing to do is to:
Your Answer: Take off all monitoring electrodes immediately
Correct Answer: Cover the affected areas in cling film
Explanation:The baby most probably has dystrophic epidermolysis bullosa, a primarily autosomal dominant disorder associated with keratin 5 and 14 defects. Initial management consists of supportive measures such as protecting the skin.
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This question is part of the following fields:
- Dermatology
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Question 14
Incorrect
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A 16-year-old girl developed haemoptysis with acute kidney injury requiring dialysis. She suffered from recurrent epistaxis for the past 2 weeks. Renal biopsy showed crescentic glomerulonephritis. Which antibody would you expect to be positive?
Your Answer: Antinuclear
Correct Answer: Antiproteinase 3
Explanation:This patient has pulmonary renal syndrome which is most commonly due to an ANCA positive vasculitis. The history of recurrent epistaxis makes Wegener’s granulomatosis the most probable diagnosis. Wegener’s granulomatosis, microscopic polyangiitis, and idiopathic pauci-immune necrotizing crescentic glomerulonephritis (NCGN) are strongly associated with antineutrophil cytoplasmic autoantibodies (ANCAs) directed against either proteinase 3 (anti-PR3) or myeloperoxidase (anti-MPO).
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This question is part of the following fields:
- Renal
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Question 15
Correct
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A 12-year-old boy presents with severe abdominal pain, bloody faeces, haematuria and painful, swollen joints. Physical examination revealed petechiae on his legs. Blood investigations were found to be normal.What is the most probable diagnosis?
Your Answer: Henoch-Schonlein purpura
Explanation:The presentation of the child is highly suggestive of Henoch-Schonlein purpura (HSP). It is an IgA-mediated, autoimmune hypersensitivity vasculitis that targets the small vessels of the skin, GI tract, kidneys, and joints.It is most commonly seen in children aged 3 – 6 years old and is twice as common in boys than girls. Preceding viral URTI with low-grade pyrexia is common. The most common organism associated with HSP is, however, Group A streptococcal infection.A purpuric rash is seen on the back of the legs and buttocks and can less frequently affect the arms. Arthralgia is common (usually knees/ankles) in these patients.Abdominal pain and bloody diarrhoea may occur. And half of the children with HSP have renal involvement. Rarely, it can lead to end-stage renal failure.Treatment includes adequate hydration, occasionally steroids, and other immunosuppressants. The disease can recur in 1 in 3 children.
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This question is part of the following fields:
- Haematology And Oncology
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Question 16
Correct
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A 7-week-old baby girl has a bright red, well-circumscribed and lobulated lesion developing on her right temple that wasn't noted at birth, but is now 5 mm in diameter.What is the most appropriate management?
Your Answer: Reassure the mother that most lesions spontaneously regress
Explanation:Capillary haemangiomas are one of the most common benign tumours of infancy. They are benign endothelial cell neoplasms that are typically absent at birth and characteristically have rapid growth in infancy with spontaneous involution later in life. This is in contrast to another known group of childhood vascular anomalies, vascular malformations. Vascular malformations, such as lymphangiomas and arteriovenous malformations, are present at birth and are characterized by very slow growth with persistence into adult life. The indications for treatment can be divided into systemic, ophthalmic, and dermatologic reasons. Systemic reasons for intervention include congestive heart failure, thrombocytopenia, haemolytic anaemia, and nasopharyngeal obstruction. Ophthalmic indications for intervention include occlusion of the visual axis, optic nerve compression, severe proptosis, and anisometropia. Dermatologic indications for intervention include maceration and erosion of the epidermis, infection, and cosmetic disfigurement.The first-line treatment of capillary haemangiomas is simple observation. Since most of these lesions regress on their own, there is no need to intervene unless one of the above criteria is met.
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This question is part of the following fields:
- Dermatology
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Question 17
Incorrect
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A new-born baby is found to have a loud heart murmur but is otherwise well 6-hour baby after birth.Which one of the following is the most likely cause?
Your Answer: Atrial septal defect
Correct Answer: Tetralogy of Fallot
Explanation:Tetralogy of Fallot usually is diagnosed after a baby is born, often after the infant has an episode of turning blue during crying or feeding (a tet spell). A loud heart murmur is usually present.An atrial septal defect is present at birth, but many babies do not have any signs or symptoms.Coarctation of the aorta is usually diagnosed after the baby is born. How early in life the defect is diagnosed usually depends on how mild or severe the symptoms are. New-born screening using pulse oximetry during the first few days of life may or may not detect coarctation of the aorta.In babies with a more serious condition, early signs usually include:pale skinirritabilityheavy sweatingdifficulty breathingBabies born with pulmonary atresia will show symptoms at birth or very soon afterwards. They may be cyanotic. However, it is not uncommon for a heart murmur to be absent right at birth.
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This question is part of the following fields:
- Cardiovascular
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Question 18
Incorrect
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A new treatment reduces blood pressure for hypertensive patients by 10 mmHg more than the current standard treatment (95% confidence interval minus 2 to 22).Which of the following statements is most accurate?
Your Answer: If the results are from a randomised controlled trial they can be believed to be accurate
Correct Answer: The difference is not statistically significant
Explanation:If the 95% confidence interval contains zero (more precisely, the parameter value specified in the null hypothesis), then the effect will not be significant at the 0.05 level.If the 95% CI for the DIFFERENCE between the 2 groups contains the value 0, this means that the p-value will be greater than 0.05. Conversely, if the 95% CI does not contain the value 0, then the p-value will be strictly less than 0.05. The same applies when comparing groups using a ratio, such as an odds ratio or risk ratio. When using a RATIO instead of a DIFFERENCE, the situation of no difference between the 2 groups will be indicated by a value of 1 instead of 0. If the ratio equals to 1, the 2 groups are equal. Hence, if the 95% CI of the ratio contains the value 1, the p-value will be greater than 0.05. Alternatively, if the 95% CI does not contain the value 1, the p-value is strictly less than 0.05.
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This question is part of the following fields:
- Epidemiology And Statistics
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Question 19
Correct
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A 7-year-old boy was brought to the ED in an unconscious and apnoeic state. What is your immediate management of this case?
Your Answer: Secure airway
Explanation:ABC : Airway, breathing, circulation is the order of assessment in any patient that is unconscious and apnoeic.
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This question is part of the following fields:
- Neurology
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Question 20
Incorrect
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Toe walking is NOT a feature of which of the following conditions?
Your Answer: Unilateral hip dislocation
Correct Answer: Waardenburg syndrome
Explanation:Toe walking refers to a pattern of walking in which the infants walk on the balls of their feet, without putting the heel of the feet on the ground. It is considered normal under the age of 2 years, but if it continues beyond that, it can signify some underlying pathology. The diseases that can be associated with toe walking include unilateral hip dislocation, Spinal tumours, Duchenne muscular dystrophy, prematurity, and cerebral palsy. Waardenburg’s syndrome is an autosomal dominant disorder, causing sensorineural deafness, and heterochromatic irises. Toe walking is not a feature.
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This question is part of the following fields:
- Child Development
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Question 21
Incorrect
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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: N-acetylcysteine
Correct 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 22
Incorrect
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An 8-month-old baby was investigated for failure to thrive. On examination, he was irritable with evidence of weight loss. His stools were pale, bulky and malodorous. What is the most appropriate test that can be done to confirm the diagnosis?
Your Answer: Sweat Test
Correct Answer: Jejunal Biopsy
Explanation:Pale, bulky, malodorous stools are evidence of fat malabsorption syndrome. The diagnostic test is jejunal biopsy to rule out other differential diagnoses such as celiac disease, giardiasis or Crohn’s disease etc.
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This question is part of the following fields:
- Gastroenterology And Hepatology
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Question 23
Incorrect
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A 15-year-old girl is brought to the OBGYN clinic by her mother with primary amenorrhoea and poor pubertal development. Investigations reveal low oestrogen, and high LH and FSH. Which of the following is the most likely diagnosis?
Your Answer: Anorexia
Correct Answer: Turner's syndrome
Explanation:Turner syndrome, a condition that affects only females, results when one of the X chromosomes (sex chromosomes) is missing or partially missing. Turner syndrome can cause a variety of medical and developmental problems, including short height, failure of the ovaries to develop and heart defects.Turner syndrome may be diagnosed before birth (prenatally), during infancy or in early childhood. Occasionally, in females with mild signs and symptoms of Turner syndrome, the diagnosis is delayed until the teen or young adult years.
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This question is part of the following fields:
- Endocrinology
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Question 24
Correct
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A 16-year-old girl is diagnosed with Chlamydia trachomatis infection. This infection can possibly result in which of the following complications?
Your Answer: Fitz- Hugh- Curtis syndrome
Explanation:Fitz-Hugh-Curtis syndrome (FHCS), or perihepatitis, is a chronic manifestation of pelvic inflammatory disease (PID). It is described as an inflammation of the liver capsule, without the involvement of the liver parenchyma, with adhesion formation accompanied by right upper quadrant pain. A final diagnosis can be made through laparoscopy or laparotomy via direct visualization of violin string-like adhesions or through hepatic capsular biopsy and culture. FHCS is a complication of PID. Microorganisms associated with PID are thought to spread in one of three ways:-Through spontaneous ascending infection, microbes from the cervix or vagina travel to the endometrium, through the fallopian tubes, and into the peritoneal cavity. Complications include endometritis, salpingitis, tubo-ovarian abscess, pelvic peritonitis, and perihepatitis.-Microbes can also spread via lymphatic channels such as an infection of the parametrium from an intrauterine device.-Finally, the hematogenous spread is also possible such as with tuberculosis.
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This question is part of the following fields:
- Adolescent Health
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Question 25
Incorrect
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A 17-year-old autistic boy arrives at the clinic with lethargy, curly corkscrew like hair and petechiae. Which of the following is the most likely diagnosis?
Your Answer: Vitamin K deficiency
Correct Answer: Vitamin C deficiency
Explanation:Presentation can vary by individual. Early stages are often characterized by malaise, fatigue, and lethargy. One to 3 months of inadequate intake can lead to anaemia, myalgia, bone pain, easy bruising (Figure 3), swelling, petechiae, perifollicular haemorrhages, corkscrew hairs, gum disease, poor wound healing, mood changes, and depression. Perifollicular haemorrhages and easy bruising are often first seen in the lower extremities, as capillary fragility leads to an inability to withstand hydrostatic pressure. Late stages of scurvy are more severe and life threatening; common manifestations include generalized oedema, severe jaundice, haemolysis, acute spontaneous bleeding, neuropathy, fever, convulsions, and death.
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This question is part of the following fields:
- Nutrition
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Question 26
Correct
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A male had a deep vein thrombosis (DVT) in his left calf. After investigation, it was discovered that this was caused by a genetic disease and his children may be affected.What is the most common heritable cause of DVT?
Your Answer: Factor V Leiden
Explanation:Based on the studies, genetic factors are responsible for approximately 60 % DVT cases. Factor V (FV) Leiden which is the most common cause of inherited thrombophilia, predisposes patients to DVT because of resistance to protein C.The heritable causes of deep vein thrombosis, from most to least common are:Factor V LeidenProthrombin G20210A variantProtein C deficiencyProtein S deficiencyAntithrombin deficiencyVon Willebrand disease and thalassaemia are not causes of DVT.
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This question is part of the following fields:
- Haematology And Oncology
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Question 27
Correct
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A 15-year-old is admitted in the emergency department following a collapse. He has a known history of asthma and type 1 diabetes.His arterial blood gas analysis reveals:pH: 7.05pO2: 8 kPapCO2: 8 kPaBase excess: -12 mmol/LHCO3-: 15 mmol/LWhich of the following interpretations is correct?
Your Answer: Mixed metabolic and respiratory acidosis
Explanation:In this case scenario, the pH is too low to be fully explained by a respiratory acidosis. Usually, if there is a metabolic acidosis, the respiratory system will try to compensate by hyperventilation and reduced pCO2. In this case, however, the pCO2 is raised suggesting the presence of a respiratory component.Therefore, this boy has mixed metabolic and respiratory acidosis, most probably due to severe exacerbation of this asthma, which led to diabetic ketoacidosis.Note:Normal values:pH: 7.35 – 7.45pO2: 10 – 14 kPapCO2: 4.5 – 6 kPaBase excess (BE): -2 – 2 mmol/LHCO3: 22 – 26 mmol/L
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This question is part of the following fields:
- Endocrinology
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Question 28
Correct
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A 10-year-old gentleman is referred with a six month history of daily headache, which is mostly frontal in location and occasionally associated with nausea.He has been taking paracetamol 3 g daily, aspirin 300 mg thrice daily, and codeine 40 mg thrice daily, all of which have had only a temporary effect. He has a two year history of depression treated with paroxetine. No abnormalities were found on examination.What is the most likely diagnosis?
Your Answer: Analgesic misuse headache
Explanation:Because of the patient’s history of chronic analgesic use of daily paracetamol intake, the most likely diagnosis of this case is Analgesic misuse headache. In these cases, the headache is only temporarily relieved by analgesics. Treatment involves gradual withdrawal of analgesics.
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This question is part of the following fields:
- Neurology
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Question 29
Correct
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A 5-year-old girl was admitted for fever, anaemia, thrombocytopenia and signs of pulmonary infection. She now presents a few days later with signs of meningism. What is the most probable diagnosis?
Your Answer: Acute lymphoblastic leukaemia (ALL)
Explanation:Acute lymphoblastic leukaemia (ALL) is a cancer of the lymphoid line of blood cells characterized by the development of large numbers of immature lymphocytes. Symptoms may include feeling tired, frequent infections with fever as well as anaemia with thrombocytopenia. As an acute leukaemia, ALL progresses rapidly and is typically fatal within weeks or months if left untreated. The patient’s age also favours the diagnosis of ALL as it occurs most commonly in children, particularly those between the ages of two and five.
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This question is part of the following fields:
- Haematology And Oncology
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Question 30
Incorrect
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What is the cause for tinea incognito?
Your Answer: Fungal superinfection
Correct Answer: Inappropriate treatment with steroid cream
Explanation:Tinea incognitoƄ is a term used to describe a tinea infection modified by topical steroids. It is caused by prolonged use of topical steroids, sometimes prescribed as a result of incorrect diagnosis. Topical steroids suppress the local immune response and allow the fungus to grow easily. As a result, the fungal infection may take on the bizarre appearance seen in this patient.The diagnosis of tinea incognito is simple to confirm by microscopic visualization of branching hyphae and spores typical of dermatophytes in a potassium hydroxide preparation.Treatment of tinea incognito requires cessation of all topical steroid use and implementation of specific antifungal treatment. A low-potency corticosteroid may be used briefly to avoid the flare often associated with abrupt cessation of a potent steroid. Patients should be warned of this possibility so they do not reinstitute use of topical steroids on their own.
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This question is part of the following fields:
- Dermatology
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