Nokea
In which of the following valve lesions, Dimensionless Index (DI) is used as an echocardiographic parameter to assess the severity of the lesion?
- A. Aortic stenosis
- B. Aortic regurgitation
- C. Mitral regurgitation
- D. Mitral stenosis
Correct Answer: A
Rationale: Dimensionless Index (DI) is used to assess the severity of aortic stenosis.
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All are true about genotype - phenotype correlation in Brugada syndrome, except
- A. SCN5A mutation is associated with short PR interval
- B. LTCC mutation is associated with short QT interval
- C. Yield of genetic testing is low (25%)
- D. No major therapeutic implication of genetic testing
Correct Answer: D
Rationale: There are therapeutic implications of genetic testing in Brugada syndrome.
Which of the following features favor a diagnosis of restrictive cardiomyopathy over constrictive pericarditis?
- A. Elevated pulmonary artery pressures
- B. Normal BNP levels
- C. Annulus reversus
- D. Ventricular interdependence
Correct Answer: A
Rationale: Restrictive cardiomyopathy is associated with elevated pulmonary artery pressures
Increased anion gap is seen in:
- A. Uraemia
- B. Starvation
- C. Renal tubular acidosis
- D. Acetazolamide therapy
Correct Answer: A
Rationale: Uraemia, a condition of high levels of urea in the blood, is associated with an increased anion gap due to the accumulation of acids.
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.
A child has been seen by the school nurse for dizziness since the start of the school term. It happens when standing in line for recess and homeroom. The child now reports that she would rather sit and watch her friends play hopscotch because she cannot count out loud and jump at the same time. When the nurse asks her if her chest ever hurts, she says yes. Based on this history, the nurse suspects that she has:
- A. Ventricular septal defect (VSD)
- B. Aortic stenosis (AS)
- C. Mitral valve prolapse
- D. Tricuspid atresia
Correct Answer: B
Rationale: AS can progress and result in exercise intolerance, which may improve with rest.