Table 3.
Electrocardiographic parameters of patients with and without cardiac injury
| Cardiac injury (+) (n = 63) | Cardiac injury (−) (n = 156) | p | |
|---|---|---|---|
| Heart rate, (bpm) | 94.3 ± 20.9 | 90.9 ± 16.6 | 0.208 |
| PR interval, (ms) | 159.6 ± 24.0 | 153.3 ± 22.4 | 0.091 |
| QRS duration, (ms) | 97.5 ± 26.6 | 93.2 ± 16.3 | <0.001 |
| QRS >120 ms, n(%) | 16 (25%) | 16 (10%) | 0.004 |
| QTc interval, (ms) | 438.9 ± 33.9 | 431.3 ± 24.5 | 0.067 |
| QTc >500 ms, n (%) | 7 (11%) | 5 (3%) | 0.042 |
| RBBB, n (%) | 3 (5%) | 8 (5%) | 0.911 |
| IVCD, n (%) | 6 (9%) | 5 (3%) | 0.053 |
| fQRS, n (%) | 14 (22%) | 12 (7%) | 0.003 |
| ST depression, n (%) | 21 (33%) | 24 (15%) | 0.003 |
| T inversion, n (%) | 24 (38%) | 24 (15%) | <0.001 |
| ST-T change, n (%) | 31 (49%) | 31 (20%) | <0.001 |
Abbreviations: HR, heart rate; QTc, corrected QT; RBBB, right bundle branch block; IVCD, intraventricular conduction delay; fQRS, fragmented QRS.
Data are given as mean ± SD.