Table 2.

Clinical Risk Stratification and Medications in HCM Cohort

	HCM Mutation Carriers Without LVH (n = 10)	HCM Patients With LVH (n = 27)
No. of SCD risk factors
0	8 (80)	15 (55)
1	1 (10)	8 (30)
2	1 (10)	4 (15)
3	0 (0)	0 (0)
Family history of SCD	2 (20)	11 (41)
Unexplained syncope	0 (0)	1 (4)
NSVT on Holter monitor	1 (10)	3 (11)
Abnormal exercise blood pressure response	0 (0)	0 (0)
Maximum LV wall thickness ≥30 mm	0 (0)	1 (4)
LV outflow tract gradient	0 (0)	0 (0)
Beta-blockers	4 (40)	18 (67)
Calcium-channel blockers	0 (0)	22 (6)

Values are n (%).

NSVT = nonsustained ventricular tachycardia; SCD = sudden cardiac death; other abbreviations as in Table 1.