Table 1.
Parameters for ventilation strategies and blood gas
| Con-HVT | Sev-HVT | Con-LVT | Sev-LVT | |
|---|---|---|---|---|
| Hemodynamics | ||||
| MAP (mmHg) | 55.6 ± 3.1 | 54.4 ± 3.3 | 56.2 ± 3.5 | 55.7 ± 2.8 |
| HR | 126 ± 4.6 | 128 ± 5.6 | 124 ± 4.0 | 127 ± 5.2 |
| Respiratory pressure | ||||
| Pmean (cm H2O) | 14.5 ± 0.6* | 15.1 ± 0.3* | 8.9 ± 0.4 | 8.7 ± 0.5 |
| Ppeak (cm H2O) | 25.7 ± 1.2* | 26.8 ± 1.8* | 12.4 ± 0.9 | 12.4 ± 0.6 |
| Blood gas | ||||
| pH | 7.48 ± 0.05* | 7.47 ± 0.04* | 7.31 ± 0.03 | 7.32 ± 0.04 |
| HCO3 (mmol/L) | 23.5 ± 1.2 | 24.2 ± 0.8 | 25.6 ± 1.4 | 25.7 ± 1.3 |
| PO2 (mmHg) | 125 ± 5.4 | 128 ± 7.9 | 124 ± 4.3 | 126 ± 6.7 |
| PCO2 (mmHg) | 35.4 ± 1.5* | 36.2 ± 1.3* | 48.7 ± 2.6 | 47.7 ± 3.1 |
Note:
*
P < 0.05, compared with Con- LVT or Sev- LVT.
Abbreviations: Con-HVT, high tidal volume of synthetic air ventilation; Sev-HVT, high tidal volume of air ventilation supplemented with sevoflurane; Con-LVT, low tidal volume of synthetic air ventilation; Sev-LVT, low tidal volume of air ventilation supplemented with sevoflurane; MAP, mean arterial pressure; HR, heart rate; Pmean, mean airway pressures; Ppeak, peak airway pressures.