Comparison of baseline measurements at the three pacing sites for patients with a long interatrial conduction delay (⩾33 ms)
| HRA pacing | CS pacing | Biatrial pacing | |
|---|---|---|---|
| Data are mean (SD). | |||
| *p<0.01 v HRA; †p<0.01 v CS; ‡p<0.05 v HRA; §p<0.05 v CS. | |||
| P wave duration (ms) | 140 (22) | 134(27) | 101(15)*† |
| E Vmax (cm/s) | 47.0 (16.3) | 46.6 (18.2) | 48.9 (19.1) |
| A Vmax (cm/s) | 58.9 (22.1) | 59.3 (24.0) | 64.8 (22.5)ठ|
| TVI (cm) | 5.8 (1.8) | 6.4 (1.7) | 7.1 (2.2)*§ |
| S-A peak (ms) | 192 (19) | 177 (19) | 156 (18)*† |
| S-A end (ms) | 258 (22) | 250 (22) | 231 (20)*† |
| MBP (mm Hg) | 103 (19) | 104 (21) | 105 (22) |
| CO (l/min) | 3.45 (0.65) | 3.54 (0.70) | 3.85 (0.68)*† |
| PCWP (mm Hg) | 16.3 (4.8) | 15.0 (4.5)++ | 13.8 (4.6)*§ |