Table 4.
Comparison of Pmean and Cdyn at different time points between the two groups (x̅±sd)
| Indicators | n | T0 | T1 | T2 | T3 | T4 |
|---|---|---|---|---|---|---|
| Pmean (cmH2O) | ||||||
| Titration group | 40 | 17.44±2.12 | 18.61±3.11 | 19.83±2.86 | 19.75±2.65 | 18.56±3.21 |
| Control group | 40 | 16.26±2.41 | 19.23±3.24 | 20.47±4. 55 | 21.37±4.16 | 17.74±3.18 |
| Cdyn (mL/cmH2O) | ||||||
| Titration group | 40 | 24.88±7.84 | 26.59±9.47 | 30.56±4.99* | 30.78±4.46* | 31.26±5.86* |
| Control group | 40 | 25.09±9.32 | 25.87±9.62 | 26.03±5.52 | 25.81±5.39 | 27.62±5.23 |
Note: 1 mmHg = 0.133 KPa; 1 cmH2O = 0.098 KPa.
Compared with control group;
*
P<0.05.
Pmean: mean airway pressure; Cdyn: dynamic pulmonary compliance; T0: prone position; T1: PEEP ventilation for 10 min; T2: PEEP ventilation for 30 min; T3: PEEP ventilation for 60 min; T4: at the end of surgery.