Table 2.
Hemodynamics, blood gas, and lung function
| TEAS Group (n = 40) | Sham Group (n = 40) | P | |
|---|---|---|---|
| HR (beats/min) | |||
|
T0 T1 T2 T3 |
76.03 ± 13.40 72.10 ± 9.34 70.43 ± 10.12 72.75 ± 11.13 |
74.00 ± 10.12 71.85 ± 8.76 68.97 ± 8.06 71.79 ± 9.68 |
0.448△ 0.902△ 0.481△ 0.741△ |
| MAP (mmHg) | |||
|
T0 T1 T2 T3 |
99.33 ± 9.16 93.28 ± 5.67 94.10 ± 6.23 95.23 ± 6.50 |
98.38 ± 10.28 92.78 ± 7.35 92.80 ± 7.39 94.48 ± 7.81 |
0.664△ 0.734△ 0.398△ 0.642△ |
| Hb (mg/L) | |||
|
T0 T1 T2 T3 |
135.51 ± 13.40 134.78 ± 12.61 134.28 ± 12.35 133.66 ± 11.71 |
136.03 ± 14.50 135.48 ± 13.90 135.08 ± 13.50 134.40 ± 12.87 |
0.868△ 0.815△ 0.784△ 0.787△ |
| pH | |||
|
T0 T1 T2 T3 |
7.41 ± 0.04 7.40 ± 0.04 7.40 ± 0.04 7.38 ± 0.04 |
7.42 ± 0.04 7.41 ± 0.05 7.40 ± 0.05 7.38 ± 0.04 |
0.317△ 0.228△ 0.908△ 0.956△ |
| PaCO2 (mmHg) | |||
|
T0 T1 T2 T3 |
40.58 ± 4.91 41.10 ± 5.35 40.23 ± 4.41 42.90 ± 4.42 |
40.79 ± 5.68 41.95 ± 5.51 41.83 ± 5.95 42.40 ± 5.12 |
0.862△ 0.486△ 0.176△ 0.643△ |
| PaO2/FiO2 (mmHg) | |||
|
T0 T1 T2 T3 |
304.32 ± 52.42 180.43 ± 47.51*#† 184.93 ± 33.93*#† 245.13 ± 48.84*† |
297.75 ± 66.89 105.15 ± 30.70*† 128.18 ± 47.75*† 221.53 ± 58.53*† |
0.626△ 0.001△ < 0.001△ 0.056△ |
| Qs/Qt (%) | |||
|
T0 T1 T2 T3 |
18.10 ± 2.23 22.94 ± 1.73*#† 22.83 ± 1.25*#† 20.39 ± 1.95*#† |
18.34 ± 2.68 25.60 ± 1.09*† 24.79 ± 1.70*† 21.32 ± 2.19*† |
0.341△ < 0.001△ < 0.001△ 0.026△ |
| A-aDO2 (mmHg) | |||
|
T0 T1 T2 T3 |
357.95 ± 53.83 481.20 ± 46.80*#† 477.79 ± 33.30*#† 412.25 ± 49.77*#† |
364.26 ± 65.63 555.41 ± 31.38*† 532.54 ± 47.61*† 438.47 ± 57.01*† |
0.596△ < 0.001△ < 0.001△ 0.022△ |
| RI | |||
|
T0 T1 T2 T3 |
1.25 ± 0.43 2.94 ± 1.11*#† 2.69 ± 0.62*#† 1.81 ± 0.62*#† |
1.36 ± 0.63 5.78 ± 1.81*† 4.90 ± 2.27*† 2.24 ± 1.08*† |
0.353△ < 0.001△ < 0.001△ 0.023△ |
Values expressed as mean ± standard deviation. *P < 0.05 versus T0; #P < 0.05 versus sham group. △Student’s t-test, †RM-ANOVA. HR: heart rate; MAP: mean arterial pressure; PaCO2: partial pressure of carbon dioxide partial pressure; A-aDO2: alveolar-arterial oxygen tension; RI: respiratory index; Qs/Qt: intrapulmonary shunt ratio; TEAS: transcutaneous electrical acupoint stimulation; RM-ANOVA: repeated measures analysis of variance. T0: before one-lung ventilation; T1: 30 min after one-lung ventilation; T2: 1 h after one-lung ventilation; T3: 10 min after resuming two-lung ventilation.