Hypertrophic cardiomyopathy and sudden cardiac death

Table 1 Risk factors for sudden cardiac death in hypertrophic cardiomyopathy

Major risk factors	Possible in individual patients
Cardiac arrest (VF)	AF
Spontaneous sustained VT	Myocardial ischemia
Family history of premature sudden death	LVOTO
Unexplained syncope	High-risk mutation
LV thickness ≥ 30 mm	Intense (competitive) physical exertion
Abnormal exercise BP
Non-sustained spontaneous VT

VF: Ventricular fibrillation; VT: Ventricular tachycardia; BP: Blood pressure; LV: Left ventricular; AF: Atrial fibrillation; LVOTO: Left ventricular outflow tract obstruction.