Table 3.
Comparison of MAP, HR and CVP at different time points between the two groups (x̅±sd)
| Indicators | n | T0 | T1 | T2 | T3 | T4 | T5 |
|---|---|---|---|---|---|---|---|
| MAP (mmHg) | |||||||
| Titration group | 40 | 74.82±8.53 | 84.94±13.92 | 76.15±8.80 | 80.52±8.76 | 84.51±13.44 | 85.56±12.08 |
| Control group | 40 | 77.61±10.02 | 86.63±16.27 | 80.16±12.54 | 84.83±10.61 | 86.90±9.93 | 86.91±9.98 |
| HR (beats/min) | |||||||
| Titration group | 40 | 60.03±7.42 | 71.81±14.66 | 72.13±9.92 | 71.56±11.03 | 75.62±12.61 | 84.93±12.11 |
| Control group | 40 | 63.92±9.33 | 73.82±12.69 | 75.84±11.78 | 74.22±11.27 | 75.68±13.56 | 83.85±14.16 |
| CVP (cmH2O) | |||||||
| Titration group | 40 | 6.86±2.04 | 8.62±2.53 | 9.82±2.51 | 9.46 ±2.13 | 7.58±1.96 | 5.67±2.42 |
| Control group | 40 | 6.36±2.39 | 8.51±2.27 | 8.76±1.89 | 8.55±1.76 | 7.62±2.35 | 5.73±1.86 |
Note: 1 mmHg = 0.133 KPa; 1 cmH2O = 0.098 KPa. MAP: mean arterial pressure; HR: heart rate; CVP: central venous pressure; 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; T5: 20 min after extubation.