Nokea
List FOUR differential diagnoses aside from aortic coarctation for a two-week old infant presenting with tachypnea and poor femoral pulses.
- A. Tachycardia induced cardiomyopathy
- B. Critical aortic stenosis
- C. Dilated cardiomyopathy
- D. Myocarditis
Correct Answer: A
Rationale: Differential diagnoses in such cases can include non-structural heart conditions like tachycardia induced cardiomyopathy, which affects the heart's ability to pump effectively.
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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.
The most common cause for testicular pain in boys in 2-10 years of age is
- A. Testicular torsion
- B. Torsion of appendix testis
- C. Epididymitis
- D. Congenital varicocele
Correct Answer: B
Rationale: Torsion of the appendix testis is the most common cause of testicular pain in boys aged 2-10 years, as it involves the twisting of a small vestigial remnant.
Uncommon complications of severe falciparum malaria are:
- A. Stroke
- B. Anaemia
- C. Hepatitis
- D. Jaundice
Correct Answer: A
Rationale: The correct answer is A because stroke is an uncommon complication of severe falciparum malaria. The other options (b-e) are more common complications.
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).
Restrictive cardiomyopathy (RCM) is characterized by all the following EXCEPT
- A. normal ventricular chamber dimensions
- B. normal myocardial wall thickness
- C. preserved systolic function
- D. normal atrial chamber dimensions
Correct Answer: D
Rationale: Restrictive cardiomyopathy is characterized by impaired ventricular filling and high diastolic pressures despite normal systolic function.