syncope - woodywoodpecker

[ArchivalUser]

Which of the following disorders is not associated
with ventricular tachycardia as a cause of syncope?
A. Hypertrophic obstructive cardiomyopathy
B. Prior myocardial infarction
C. Atrial myxoma
D. Aortic valvular stenosis
E. Congenital long QT syndrome

[ArchivalUser]

CCC

[ArchivalUser]

DDD

[ArchivalUser]

cccccc

[ArchivalUser]

The answer is C. Although ventricular tachycardia is classically associated
with ischemic heart disease, in which scarred myocardium provides a substrate for reentrant
tachyarrhythmias, other cardiac lesions put a patient at risk for ventricular tachycardia.
Notably, hypertrophic obstructive cardiomyopathy, aortic stenosis, and long QT
syndrome carry an increased risk for ventricular tachycardia. Atrial myxoma, which can
cause syncope by obstructing blood flow with resultant decreased cardiac output, is not
associated with ventricular tachycardia.