Table II.
Comparison of the variables measured at different time-points.
| Parameters | TEAS group (n=41) | Control group (n=39) |
|---|---|---|
| MAP (mmHg) | ||
| T0 | 89.7±7.9 | 90.7±10.6 |
| T1 | 86.2±9.6 | 86.2±10.8 |
| T2 | 83.1±10.9 | 86.2±10.7 |
| T3 | 86.2±10.1 | 86.1±10.1 |
| HR (beats/min) | ||
| T0 | 76.1±10.7 | 74.7±12.7 |
| T1 | 74.2±10.8 | 69.4±11.7 |
| T2 | 69.8±9.7 | 70.1±11.2 |
| T3 | 73.7±10.5 | 78.3±9.8 |
| SpO2 | ||
| T0 | 99.4±0.6 | 99.5±0.5 |
| T1 | 99.6±0.6 | 99.5±0.7 |
| T2 | 99.6±0.5 | 99.5±0.9 |
| T3 | 99.7±0.8 | 99.6±0.9 |
| pH | ||
| T0 | 7.4±0.04 | 7.4±0.06 |
| T1 | 7.3±0.06 | 7.3±0.04 |
| T2 | 7.3±0.06 | 7.3±0.03 |
| T3 | 7.4±0.03 | 7.4±0.04 |
| PCO2 (mmHg) | ||
| T0 | 42.8±6.1 | 44.4±6.8 |
| T1 | 44.4±8.8 | 45.0±8.1 |
| T2 | 42.1±8.1 | 45.2±7.6 |
| T3 | 39.5±4.9 | 39.9±5.9 |
| OI | ||
| T0 | 425.6±21.2 | 423.2±22.0 |
| T1 | 450.5±30.0 | 442.3±28.9 |
| T2 | 491.6±37.8a | 460.1±39.3 |
| T3 | 423.7±25.3a | 395.0±31.5 |
Values are expressed as the mean ± standard deviation.
a
P<0.05 compared with the patients in the Control group. TEAS, transcutaneous electric acupoint stimulation; MAP, mean arterial pressure; HR, heart rate; OI, oxygen index; PCO2, partial pressure of carbon dioxide; T0, time-point of arriving at the operating room; T1, time-point immediately prior to inducing the pneumoperitoneum; T2, time-point immediately after the end of pneumoperitoneum; T3, on leaving the operating room.