Table 3. 12-Lead ECG At Baseline In 78 Ppcm Patients.
| ECG characteristic | No. (%) (n = 78) | |
| Rate and rhythm | Mean heart rate (beats/min) ± SD | 100 ± 21 |
| Proportion in sinus rhythm | 70 (90%; 95% CI: 81–95) | |
| Proportion with sinus tachycardia | 35 (45%; 95% CI: 34–57) | |
| Proportion with arrhythmias | ||
| • premature ventricular complex | 3 (4%; 95% CI: 0.8–11) | |
| • supraventricular tachycardia | 1 (1%; 95% CI: 0.03–7) | |
| • sinus arrhythmias | 4 (5%; 95% CI: 1–13) | |
| Axis | QRS axis | |
| • abnormal | 20 (26%; 95% CI: 16–37) | |
| • left axis | 9 (12%; 95% CI: 5–21) | |
| • right axis | 8 (10%; 95% CI: 5–19) | |
| • indeterminate | 3 (4%; 95% CI: 0.8–11) | |
| Conduction | PR interval > 220 ms | 1 (1%; 95% CI: 0.04–7) |
| Proportion with bundle branch block (BBB) | 9 (12%; 95% CI: 5–21)* | |
| • left BBB | 4 (5%; 95% CI: 1–13) | |
| • right BBB | 1 (1%; 95% CI: 0.03–7) | |
| Proportion with prolonged QTc (> 470 ms) | 4 (5%; 95% CI 1–13) | |
| Repolarisation | Proportion with T-wave abnormalities | 46 (59%; 95% CI: 47–70)** |
| • major | 30 (38%; 95% CI: 28–50) | |
| • minor | 24 (31%; 95% CI: 21–42) | |
| Proportion with ST-segment changes | ||
| • major ST-segment changes | 1 (1%; 95% CI: 0.03–7) | |
| • minor ST-segment changes | 3 (4%; 95% CI: 0.8–11) | |
| • ST-segment elevation | 1 (1%; 95% CI: 0.03–7) | |
| Hypertrophy | Proportion with left ventricular hypertrophy [Defined by Minnesota codes III1 and (IV1-3 or V1-3)] | 7 (9%; 95% CI: 4–18) |
| Atria | Proportion with atrial abnormalities | 23 (29%; 95% CI: 20–41)** |
| • left atrium | 8 (10%; 95% CI: 5–19) | |
| • right atrium | 11 (14%; 95% CI: 7–24) | |
| • bi-atrial | 4 (5%; 95% CI: 1–13) | |
*This sum exceeds that of individual BBB as some patients manifested incomplete BBB (either left or right).
**This sum exceeds that of individual sub-categories as some patients manifested features of each sub-category.