Table 1.
Patient Demographics and Results for HCM Patients With Sustained VAs and Those Without Sustained VAs
| VAs, n = 20 | No VAs, n = 80 | P Value | |
|---|---|---|---|
| Age, years | 32.7 ± 17.2 | 33.8 ± 18.4 | 0.418 |
| Male sex | 13 (65) | 53 (66.3) | 0.833 |
| History of syncope | 7 (35.0) | 2 (2.50) | <0.001 |
| Atrial arrhythmias | 3 (15.0) | 8 (10) | 0.689 |
| Nonsustained VAs | 2 (10) | 3 (3.8) | 0.261 |
| NYHA class III/IV | 4 (5.0) | 4 (5.0) | 1.000 |
| Maximum septal thickness, cm | 2.4 ± 0.5 | 2.17 ± 0.4 | 0.107 |
| LVOT obstructions presence | 2 (10.0) | 8 (10.0) | 1.000 |
| Sokolow‐Lion voltage criteria | 4 (20.0) | 27 (33.8) | 0.358 |
| Cornell voltage criteria | 8 (40.0) | 18 (22.5) | 0.190 |
| Inverted T‐waves V4 through V6 | 10 (50.0) | 33 (41.3) | 0.650 |
| QRSd, ms | 116.8 ± 36.1 | 98.8 ± 22.0 | 0.137 |
| QTc, ms | 472.0 ± 43.4 | 440.7 ± 48.1 | 0.013 |
| SPQRS‐T, degrees | 144.0 ± 26.7 | 108.2 ± 45.9 | <0.001 |
Abbreviations: HCM, hypertrophic cardiomyopathy; HF, heart failure; LVOT, left ventricular outflow tract; NYHA, New York Heart Association; QRSd, QRS duration; QTc, corrected QT interval; SD, standard deviation; SPQRS‐T, spatial peaks QRS‐T angle; VA, ventricular arrhythmia.
Data are presented as n (%) or mean ± SD.