Nokea
Causes of short stature include:
- A. Steroids at a dose of> 2 mg/kg for 4 weeks
- B. Osteogenesis imperfecta
- C. Hypochondroplasia
- D. Morquio syndrome
Correct Answer: A
Rationale: The correct answer is A because prolonged high-dose steroid use can cause growth suppression and short stature. The other options (b-e) are genetic or metabolic conditions that can also cause short stature.
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Regarding idiopathic thrombocytopenic purpura (ITP):
- A. The more severe the disease
- B. the faster is the recovery to therapy
- C. Alloimmunisation occurs due to fetomaternal incompatibility
- D. Splenomegaly is a recognised feature
Correct Answer: C
Rationale: ITP is characterized by low platelet counts due to immune-mediated destruction. Splenomegaly is a recognized feature but the other options are incorrect. Recovery is not necessarily faster with more severe disease alloimmunisation is not a feature of ITP and not all children with platelet counts below 50 000 require hospitalization. IV immunoglobulin is not indicated in all cases.
Pulmonary stenosis
- A. Most common at pulmonary valve level
- B. Valve dilatation done for dysplastic valves
- C. Ejection click occurs in past stenotic dilatation
- D. Surgery done when Rt ventricular pressure exceeds 25 mmHg
Correct Answer: A
Rationale: Pulmonary stenosis is most commonly found at the pulmonary valve level.
Acute laryngotracheobronchitis in children:
- A. Needs to be treated by broad-spectrum antibiotics
- B. Humidified oxygen by tent needs to be administered in infancy
- C. Dexamethasone is known to shorten the duration of illness
- D. Adrenaline by nebuliser is absolutely contraindicated
Correct Answer: C
Rationale: Dexamethasone, a corticosteroid, is known to reduce inflammation and shorten the duration of illness in acute laryngotracheobronchitis (croup).
Exposure to which illness should be a cause to discontinue therapy and substitute dipyridamole (Persantine) in a child receiving aspirin therapy for Kawasaki disease (KD)?
- A. Chickenpox or influenza
- B. E. coli or staphylococcus
- C. Mumps or streptococcus A
- D. Streptococcus A or staphylococcus
Correct Answer: A
Rationale: Both chickenpox and influenza are viral; during these illnesses, aspirin (a salicylate) is typically discontinued due to the risk of Reye syndrome.
Abnormal coloration of the urine (in the absence of haematuria) may be due to:
- A. Consumption of beetroot
- B. Treatment with co-danthramer
- C. Phenylketonuria
- D. Acute intermittent porphyria
Correct Answer: A
Rationale: Beetroot can cause red urine. Co-danthramer, phenylketonuria, and porphyria can also cause abnormal urine color, but beetroot is a common cause.