Which structural heart disease is most commonly associated with ventricular arrhythmias leading to sudden cardiac death?
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Correct answer: Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy is a major cause of sudden cardiac death, particularly in young individuals. Myocyte disarray and fibrosis create an arrhythmogenic substrate that predisposes to ventricular tachyarrhythmias.
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