Body temperature, cerebral perfusion pressure and pump flow during experiments
| Bypass stage . | Normothermic CPB . | Hypothermic CPB after cooling . | RCP . | Hypothermic CPB before rewarming . | Normothermic CPB after rewarming . |
|---|---|---|---|---|---|
| Temperature (°C) | |||||
| Group I | 37.0 ± 0.6 | 15.1 ± 0.1 | 15.3 ± 0.5 | 15.1 ± 0.2 | 36.8 ± 0.3 |
| Group II | 36.9 ± 0.8 | 15.0 ± 0.2 | 15.1 ± 0.3 | 15.2 ± 0.3 | 37.0 ± 0.2 |
| Perfusion pressure (mmHg) | |||||
| Group I | 59.6 ± 1.2 | 60.2 ± 0.7 | 24.5 ± 0.5 | 59.9 ± 1.1 | 60.3 ± 0.6 |
| Group II | 60.1 ± 0.8 | 60.3 ± 1.2 | 40.6 ± 0.6* | 60.5 ± 1.5 | 59.8 ± 1.1 |
| Pump flow (ml kg−1 min−1) | |||||
| Group I | 90.6 ± 3.6 | 89.1 ± 4.2 | 4.1 ± 0.4 | 91.1 ± 5.2 | 88.9 ± 4.1 |
| Group II | 88.2 ± 4.5 | 91.7 ± 3.9 | 15.2 ± 2.0* | 89.3 ± 5.7 | 91.2 ± 4.9 |
| Bypass stage . | Normothermic CPB . | Hypothermic CPB after cooling . | RCP . | Hypothermic CPB before rewarming . | Normothermic CPB after rewarming . |
|---|---|---|---|---|---|
| Temperature (°C) | |||||
| Group I | 37.0 ± 0.6 | 15.1 ± 0.1 | 15.3 ± 0.5 | 15.1 ± 0.2 | 36.8 ± 0.3 |
| Group II | 36.9 ± 0.8 | 15.0 ± 0.2 | 15.1 ± 0.3 | 15.2 ± 0.3 | 37.0 ± 0.2 |
| Perfusion pressure (mmHg) | |||||
| Group I | 59.6 ± 1.2 | 60.2 ± 0.7 | 24.5 ± 0.5 | 59.9 ± 1.1 | 60.3 ± 0.6 |
| Group II | 60.1 ± 0.8 | 60.3 ± 1.2 | 40.6 ± 0.6* | 60.5 ± 1.5 | 59.8 ± 1.1 |
| Pump flow (ml kg−1 min−1) | |||||
| Group I | 90.6 ± 3.6 | 89.1 ± 4.2 | 4.1 ± 0.4 | 91.1 ± 5.2 | 88.9 ± 4.1 |
| Group II | 88.2 ± 4.5 | 91.7 ± 3.9 | 15.2 ± 2.0* | 89.3 ± 5.7 | 91.2 ± 4.9 |
CPB: cardiopulmonary bypass; RCP: retrograde cerebral perfusion.
*P < 0.01 vs Group I.
Body temperature, cerebral perfusion pressure and pump flow during experiments
| Bypass stage . | Normothermic CPB . | Hypothermic CPB after cooling . | RCP . | Hypothermic CPB before rewarming . | Normothermic CPB after rewarming . |
|---|---|---|---|---|---|
| Temperature (°C) | |||||
| Group I | 37.0 ± 0.6 | 15.1 ± 0.1 | 15.3 ± 0.5 | 15.1 ± 0.2 | 36.8 ± 0.3 |
| Group II | 36.9 ± 0.8 | 15.0 ± 0.2 | 15.1 ± 0.3 | 15.2 ± 0.3 | 37.0 ± 0.2 |
| Perfusion pressure (mmHg) | |||||
| Group I | 59.6 ± 1.2 | 60.2 ± 0.7 | 24.5 ± 0.5 | 59.9 ± 1.1 | 60.3 ± 0.6 |
| Group II | 60.1 ± 0.8 | 60.3 ± 1.2 | 40.6 ± 0.6* | 60.5 ± 1.5 | 59.8 ± 1.1 |
| Pump flow (ml kg−1 min−1) | |||||
| Group I | 90.6 ± 3.6 | 89.1 ± 4.2 | 4.1 ± 0.4 | 91.1 ± 5.2 | 88.9 ± 4.1 |
| Group II | 88.2 ± 4.5 | 91.7 ± 3.9 | 15.2 ± 2.0* | 89.3 ± 5.7 | 91.2 ± 4.9 |
| Bypass stage . | Normothermic CPB . | Hypothermic CPB after cooling . | RCP . | Hypothermic CPB before rewarming . | Normothermic CPB after rewarming . |
|---|---|---|---|---|---|
| Temperature (°C) | |||||
| Group I | 37.0 ± 0.6 | 15.1 ± 0.1 | 15.3 ± 0.5 | 15.1 ± 0.2 | 36.8 ± 0.3 |
| Group II | 36.9 ± 0.8 | 15.0 ± 0.2 | 15.1 ± 0.3 | 15.2 ± 0.3 | 37.0 ± 0.2 |
| Perfusion pressure (mmHg) | |||||
| Group I | 59.6 ± 1.2 | 60.2 ± 0.7 | 24.5 ± 0.5 | 59.9 ± 1.1 | 60.3 ± 0.6 |
| Group II | 60.1 ± 0.8 | 60.3 ± 1.2 | 40.6 ± 0.6* | 60.5 ± 1.5 | 59.8 ± 1.1 |
| Pump flow (ml kg−1 min−1) | |||||
| Group I | 90.6 ± 3.6 | 89.1 ± 4.2 | 4.1 ± 0.4 | 91.1 ± 5.2 | 88.9 ± 4.1 |
| Group II | 88.2 ± 4.5 | 91.7 ± 3.9 | 15.2 ± 2.0* | 89.3 ± 5.7 | 91.2 ± 4.9 |
CPB: cardiopulmonary bypass; RCP: retrograde cerebral perfusion.
*P < 0.01 vs Group I.
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