Table 2.
Haemodynamic data before and after coronary artery bypass graft surgery
| Group 1 patients (n = 17) | Group 2 patients (n = 6) | p Value group 1 v group 2 | ||||||
| Preop | Postop | p Value | Preop | Postop | p Value | Preop | Postop | |
| Heart rate (beats/min) | 68 (2.7) | 81 (2.4) | 0.001 | 75 (3.7) | 93 (5.5) | 0.044 | 0.182 | 0.030 |
| SBP (mm Hg) | 115 (3.0) | 117 (2.8) | 0.607 | 128 (8.3) | 117 (8.1) | 0.001 | 0.076 | 1 |
| DBP (mm Hg) | 66 (2.4) | 64 (1.7) | 0.411 | 77 (3.3) | 67 (3.8) | 0.023 | 0.024 | 0.416 |
| MBP (mm Hg) | 84 (2.3) | 80 (1.7) | 0.057 | 97 (4.3) | 85 (5.6) | 0.005 | 0.010 | 0.259 |
| RPP (beats/min×mm Hg) | 7812 (396) | 9593 (424) | 0.001 | 9677 (1117) | 10839 (900) | 0.19 | 0.06 | 0.17 |
| Cardiac output (l/min) | 4.0 (0.32) | 5.1 (0.35) | 0.005 | 4.8 (1.13) | 4.8 (0.94) | 0.928 | 0.353 | 0.712 |
| PCWP (mm Hg) | 9 (1.0) | 10 (0.8) | 0.097 | 9 (0.6) | 9 (0.8) | 1.000 | 1.000 | 0.495 |
| Right atrial pressure (mm Hg) | 6 (0.6) | 7 (0.6) | 0.004 | 5 (1.3) | 6 (1.0) | 0.374 | 0.437 | 0.403 |
| PVR (dynes×cm/s−5) | 1672 (136) | 1239 (66) | 0.005 | 1734 (327) | 1214 (113) | 0.230 | 0.837 | 0.849 |
Data are mean (SEM).
DBP, diastolic blood pressure; MBP, mean blood pressure; PCWP, pulmonary capillary wedge pressure; Postop, postoperative data; Preop, preoperative data; PVR, peripheral vascular resistance; RPP, rate–pressure product; SBP, systolic blood pressure.