Table 3.
Operative values.
| Old | New | p Value | |
|---|---|---|---|
| Bypass time (minutes) | 78.3 (24.4) | 81.8 (25.6) | .495 |
| Crossclamp time (minutes) | 50.1 (18.6) | 52.6 (20.5) | .511 |
| Average mean arterial pressure on CPB (mmHg) | 57.5 (7.5) | 61.5 (5.2) | .002* |
| Average flow rate (L/min−2·m−2) | 4.8 (.8) | 4.8 (.6) | .786 |
| Peak hematocrit | .29 (.04) | .3 (.04) | .249 |
| Nadir hematocrit | .26 (.04) | .27 (.04) | .322 |
| Peak hemoglobin (g/L) | 93.8 (12.5) | 99.7 (16.2) | .043* |
| Nadir hemoglobin (g/L) | 85.6 (13.4) | 88.5 (13.3) | .281 |
| Peak sodium (mmol/L) | 134.2 (2.1) | 135.1 (3.0) | .089 |
| Nadir sodium (mmol/L) | 132.4 (2.4) | 133.7 (3.4) | .027* |
| Peak potassium (mmol/L) | 5.4 (.69) | 5.4 (.78) | .914 |
| Nadir potassium (mmol/L) | 4.6 (.59) | 4.6 (.65) | .847 |
| Peak glucose (mmol/L) | 10.4 (2.8) | 10.7 (3.1) | .608 |
| Nadir glucose (mmol/L) | 8.3 (2.4) | 8.4 (2.7) | .862 |
| Patients requiring RBCs | 4 | 7 | .579 |
*
Statistically significant (p < .05).
CPB, cardiopulmonary bypass; RBCs, red blood cells.