Diastolic dysfunction and normal systolic function are recognized features of
- A. dilated cardiomyopathy
- B. hypertrophic cardiomyopathy
- C. left ventricular noncompaction
- D. restrictive cardiomyopathy
Correct Answer: D
Rationale: Restrictive cardiomyopathy is specifically characterized by diastolic dysfunction with preserved systolic function.
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Regarding a supracristal VSD, the following are true EXCEPT
- A. incidence is higher in Asian children
- B. complicated by aortic insufficiency in 50-90% of patients
- C. aortic insufficiency is most often not recognized until late in the lst decade of life
- D. murmur of a supracristal VSD is usually heard at the mid to upper left sternal border
Correct Answer: D
Rationale: Closure of asymptomatic supracristal VSDs at the time of diagnosis is not recommended.
The parent of a 1-year-old child with tetralogy of Fallot asks the nurse, “Why do my child’s fingertips look like that?†On what understanding does the nurse base a response?
- A. Clubbing occurs as a result of untreated congestive heart failure.
- B. Clubbing occurs as a result of a left-to-right shunting of blood.
- C. Clubbing occurs as a result of decreased cardiac output.
- D. Clubbing occurs as a result of chronic hypoxia.
Correct Answer: D
Rationale: Clubbing of the fingers develops in response to chronic hypoxia.
Hypoglycemia in an infant is defined as whole blood glucose level less than
- A. 40 mg/dl
- B. 50 mg/dl
- C. 60 mg/dl
- D. 80 mg/dl
Correct Answer: A
Rationale: Hypoglycemia in infants is defined as a whole blood glucose level less than 40 mg/dl, as this threshold is critical for brain function.
The routine investigation of a 4-year-old with an uncomplicated UTI involves:
- A. Renal ultrasound scan
- B. Micturating cystogram
- C. DMSA (dimercaptosuccinic acid) scan
- D. DTP scan
Correct Answer: A
Rationale: A renal ultrasound scan is a standard initial investigation for a child with an uncomplicated UTI to assess for structural abnormalities.
Regarding bronchial asthma:
- A. Mortality has shown an increase during the past three decades
- B. The incidence is greater in males than females
- C. Nocturnal cough is a recognised feature
- D. Post-RSV bronchial hyperreactivity is strongly associated with atopy
Correct Answer: C
Rationale: Nocturnal cough is a common and recognized feature of bronchial asthma, often disrupting sleep.