TABLE 1

Baseline Characteristics of HCM Patients

Characteristicn (%)
HCM patients25
Age (y)48.5 ± 12.7
Sex
 Male19  (76)
 Female 6  (24)
Family history of HCM16  (64)
Family history of SCD11  (44)
History of chest pain 9  (36)
History of syncope 2  (8) 
VT on Holter ECG 4  (16)
With obstruction 4  (16)
NYHA functional class
 I14  (56)
 II 9  (36)
 III 2  (8) 
 IV 0  (0) 
Echocardiogram
 IVST (mm)17.8 ± 3.5
 PWT (mm)13.4 ± 3.0
 IVST/PWT1.36 ± 0.31
 LAD (mm)39.1 ± 7.0
 LVDd (mm)47.1 ± 6.7
 LVDs (mm)29.0 ± 7.8
 FS (%)39.0 ± 10.2
  • SCD = sudden cardiac death; VT = ventricular tachycardia; ECG = electrocardiogram; NYHA = New York Heart Association; IVST = interventricular septal thickness; PWT = posterior wall thickness; LAD = left atrial dimension; LVDd = left ventricular end-diastolic dimension; LVDs = left ventricular end-systolic dimension; FS = fractional shortening.