Cardiomyopathy

Question 1

What is the most likely diagnosis in a patient with dilated cardiomyopathy, supraventricular tachyarrhythmia, and no murmur?

Answer 1

Tachycardia-induced cardiomyopathy

Question 2

What is the likely cause of syncope in a young patient with occasional chest pain, dyspnea, and a crescendo-decrescendo systolic murmur along the left sternal border without carotid radiation?

Answer 2

Hypertrophic cardiomyopathy

Question 3

Where is a murmur due to hypertrophic cardiomyopathy best heard?

Answer 3

Left sternal border

Question 4

What is the primary mitral valve abnormality in patients with hypertrophic obstructive cardiomyopathy?

Answer 4

Systolic anterior motion of the mitral valve

Question 5

What is the preferred initial management for symptomatic patients with hypertrophic obstructive cardiomyopathy? -

Answer 5

First-line: β-blockers - Second-line: Non-dihydropyridine Ca2+ channel blockers

Question 6

What drugs are contraindicated in hypertrophic obstructive cardiomyopathy?

Answer 6

Diuretics, nitrates, ACE inhibitors, and dihydropyridine Ca2+ channel blockers