Baseline patient characteristics
| Patient characteristics | Total | Interatrial conduction delay | |
|---|---|---|---|
| ⩾33 ms | <33 ms | ||
| MBP, mean blood pressure; CO, cardiac output; PCWP, pulmonary capillary wedge pressure. | |||
| Men/women | 15/8 | 6/4 | 5/5 |
| Age (years) | 64.0 (10.0) | 61.3 (11.6) | 66.0 (8.7) |
| Associated arrhythmias | |||
| Ventricular tachyarrhythmias | |||
| With prior myocardial infarction | 1 | 0 | 1 |
| With hypertrophic cardiomyopathy | 3 | 2 | 1 |
| With dilated cardiomyopathy | 4 | 3 | 1 |
| Sick sinus syndrome | |||
| With atrial septal defect | 1 | 0 | 1 |
| Without structural heart disease | 2 | 1 | 1 |
| Complete atrioventricular block | |||
| With sarcoidosis | 3 | 1 | 2 |
| With valval heart disease | 1 | 1 | 0 |
| Without structural heart disease | 8 | 2 | 3 |
| History of paroxysmal atrial fibrillation | 6 | 4 | 1 |
| Left ventricular ejection fraction (%) | 52 (16) | 49 (22) | 55 (10) |
| MBP (mm Hg) | 106 (20) | 102 (22) | 111 (16) |
| CO (l/min) | 3.02 (0.76) | 2.87 (0.69) | 3.55 (0.64) |
| PCWP (mm Hg) | 13.8 (5.9) | 14.8 (6.0) | 12.8 (5.7) |
| P wave duration (ms) | 127 (30) | 135 (22) | 124 (36) |