Table 1.

 Distribution of risk factors for sudden death and clinical characteristics of patients with (LVH+) and without (LVH−) left ventricular hypertrophy

Characteristic	LVH+ (n = 15)	LVH− (n = 15)
Age (years)	38 (17)	29 (17)
Range	8–67	11–53
Male sex	10 (67%)	8 (53%)
Number with ⩾2 risk factors for sudden death	8	0
Abnormal ECG	15 (100%)	3 (20%)
NYHA class
I	8 (53%)	15 (100%)
II	6 (40%)	0
⩾III	1 (7%)	0
Family history of HCM + sudden death	4 (27%)	9 (60%)
Unexplained syncope	2 (13%)	1 (7%)
Non-sustained VT on Holter	2 (13%)	1 (7%)
Sustained VT/VF	1 (7%)	0
Abnormal exercise BP	6 (40%)	2 (13%)
Maximum LVWT ⩾30 mm	4 (27%)	0

Values are shown as mean (SD) or number (%).

BP, blood pressure; HCM, hypertrophic cardiomyopathy; LVWT, left ventricular wall thickness; NYHA, New York Heart Association heart failure class; VF, ventricular fibrillation; VT, ventricular tachycardia.