Table 2.
Operative data
| Parameter | Group A (n = 250) |
Group B (n = 250) |
P value |
|---|---|---|---|
| CPB time (min) | 125 ± 13.2 | 120 ± 8.37 | .92 |
| Aortic crossclamp time (min) | 61 ± 4 | 68 ± 7 | .75 |
| Nadir temperature (°C) during CPB | 34.9 ± 1.1 | 34.7 ± 2.1 | .75 |
| Nadir hemoglobin value (mg/dL) during CPB | 8.73 ± 1.53 | 8.89 ± 1.25 | .88 |
| Nadir hematocrit (%) during CPB | 25.6 ± 3.8 | 25.9 ± 3.1 | .89 |
| Nadir DO2i (mL/min/m2) during CPB | 290 ± 29 | 278 ± 14 | .039 |
| O2ERi (%) during CPB | 24 ± 1 | 29 ± 5 | .0029 |
| Nadir CI (L/min/m2) during CPB | 2.6 ± 0.2 | 2.4 ± 0.1 | .0032 |
| Nadir SvO2 (%) | 81 ± 2 | 70 ± 5 | .0029 |
Values are presented as mean ± standard deviation. CPB, Cardiopulmonary bypass; DO2i, indexed oxygen delivery; O2ERi, indexed oxygen extraction ratio; CI, cardiac index; SvO2, mixed venous oxygen saturation.