. 2014 Mar 10;25(3):501–510. doi: 10.1017/S1047951114000237

Table 1.

Risk factors for sudden death used as criteria for group selection.

• Family history of sudden death in a close relative younger than 30 years with hypertrophic cardiomyopathy.

• Syncope related to exertion.

• Pathological blood pressure response during or after exercise test defined as failure of systolic blood pressure to rise by at least 25 mmHg from baseline values, or as a fall in systolic blood pressure.

• Non-sustained or sustained ventricular tachycardia noted on Holter registration.

• Maximal wall thickness >190% of the 95th centile prediction limits for age.

• Electrocardiogram amplitude QRS-sum in limb leads more than 12 mV or electrocardiogram risk score 6 or above. ¹⁴ ^, ²¹