Table 2.
ECG findings in the study population
| Survived (n = 238) |
Died (n = 37) |
Overall (n = 275) |
|
|---|---|---|---|
| Sinus Rhythm, n (%) | 211 (89%) | 28 (12%) | 239 (87%) |
| Abnormal axis, n (%) | 11 (4%) | 5 (14%) | 16 (6%) |
| Heart rate, mean ± eSD | 86 ± 16 | 84 ± 18 | 85 ± 16 |
| Atrial fibrillation, n (%) | 30 (13%) | 5 (14%) | 26 (10%) |
| Left atrial enlargement, n (%) | 2 (1%) | 1 (3%) | 3 (1%) |
| Left ventricular hypertrophy, n (%) | 3 (1%) | 0 | 3 (1%) |
| Pacemaker rhythm, n (%) | 3 (1%) | 3 (8%) | 6 (2%) |
| PR interval, mean ± SD | 152 ± 46 | 181 ± 66 | 160 ± 40 |
| QRS interval, mean ± SD | 95 ± 27 | 106 ± 33 | 98 e± 29 |
| Pathological Q wave, n (%) | 29 (12%) | 4 (11%) | 33 (12%) |
| Any repolarization abnormality, n (%) | 64 (27%) | 8 (22%) | 72 (26%) |
| Giant T wave, n (%) | 14 (6%) | 0 (0%) | 14 (5%) |
| Pathological negative T wave, n (%) | 52 (22%) | 7 (19%) | 59 (21%) |
| ST segment depression, n (%) | 15 (6%) | 1 (3%) | 16 (6%) |
| ST segment elevation, n (%) | 6 (3%) | 0 (0%) | 6 (2%) |
| First degree atrioventricular block, n (%) | 14 (6%) | 0 (0%) | 14 (5%) |
| Left anterior hemiblock, n (%) | 8 (3%) | 3 (8%) | 11 (4%) |
| Left Ventricular Hypertrophy, n (%) | 3 (1%) | 0 (0%) | 3 (1%) |
| Delta wave, n (%) | 2 (1%) | 0 (0%) | 2 (0.7%) |
| IVB, n (%) | 32 (13%) | 11 (30%) | 43 (16%) |
| RBBB, n (%) | 11 (5%) | 2 (5%) | 13 (5%) |
| LBBB, n (%) | 6 (3%) | 5 (14%) | 11 (4%) |
| Ventricular extrasystoles, n (%) | 11 (5%) | 0 (0%) | 11 (4%) |
| U waves, n (%) | 14 (6%) | 1 (3%) | 15 (6%) |
| Poor R wave progression, n (%) | 8 (3%) | 0 (0%) | 8 (3%) |
ECG Electrocardiogram, IVB Intraventricular conduction block, LBBB Left bundle branch block, RBBB Right bundle branch block