Table 2.
Intraoperative respiratory and hemodynamic parameters during the phase 2 period
| Traditional ventilation (n=32) | Protective ventilation (n=32) | P | |
|---|---|---|---|
| Respiratory rate (bpm) | 12.8±1.5 | 16.3±1.3 | < 0.001 |
| Lung compliance (ml/cmH2O) | |||
| T2 | 22.3±3.9 | 23.3±3.6 | 0.276 |
| T3 | 21.4±3.7 | 23.5±3.7 | 0.025 |
| Pplat (cmH2O) | |||
| T2 | 26.7±3.8 | 28.2±1.8 | 0.051 |
| T3 | 27.1±3.7 | 28.3±1.7 | 0.113 |
| VD/VT | |||
| T2 | 21.0±5.8 | 21.9±6.8 | 0.590 |
| T3 | 22.6±5.5 | 21.7±6.6 | 0.555 |
| MAP (kPa) | |||
| T2 | 11.8±1.3 | 11.9±1.1 | 0.707 |
| T3 | 11.8±1.3 | 12.0±1.3 | 0.549 |
| CO (L/min) | |||
| T2 | 3.9±0.9 | 3.7±0.8 | 0.282 |
| T3 | 4.1±0.9 | 4.0±0.9 | 0.481 |
| SVV (%) | |||
| T2 | 11.2±4.0 | 9.8±2.7 | 0.098 |
| T3 | 9.5±3.4 | 8.6±3.4 | 0.298 |
bpm Beats per minute, T2 and T3 20 min after each recruitment maneuver, Pplat Plateau pressure, VD Volume of physiological dead space, VT Tidal volume, MAP Mean arterial pressure, CO Cardiac output, SVV Stroke volume variation