Comparison of baseline measurements at the three pacing sites for patients with a short 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) | 126 (25) | 128 (27) | 97 (13)*§ |
| E Vmax (cm/s) | 45.3 (14.1) | 45.0 (15.2) | 47.0 (18.3) |
| A Vmax (cm/s) | 67.5 (19.7) | 66.3 (25.0) | 69.9 (24.5) |
| TVI (cm) | 8.7 (2.2) | 8.9 (2.0) | 9.3 (2.4)‡ |
| S-A peak (ms) | 178 (18) | 166 (20) | 149 (16)*§ |
| S-A end (ms) | 242 (22) | 235 (25) | 220 (21)*§ |
| MBP (mm Hg) | 112 (21) | 113 (22) | 112 (19) |
| CO (l/min) | 4.04 (0.61) | 4.06 (0.70) | 4.31 (0.80)ठ|
| PCWP (mm Hg) | 13.9 (4.8) | 13.5 (4.2) | 12.9 (4.4)‡ |