Demographic and intraoperative characteristics of patients
pulmonary insufficiency, trauma
CORONARY HEART DISEASE, PULMONARY INSUFFICIENCY, HYPERTENSION
This study was performed from September 2020 to September 2021. 85 patients were screened for eligibility, and 5 of them were excluded because of the exclusion criteria. Two patients had diagnosed with moderate to severe pulmonary insufficiency prior to the surgery. Three patients had trauma at the target acupoint stimulation site. Finally, eighty patients were enrolled and allocated randomly to the sham group (n = 40) or TEAS group (n = 40). A flow diagram of this study was shown in Fig. 
Demographic and Intraoperative Characteristics Hypertension Coronary heart disease Diabetes15(37.5%)3(7.5%)2(5%)13(32.5%)2(5%)5(12.5%)0.6390.6440.235 pH PaO PaCO Hb(g/L)7.40 ± 0.1288.08 ± 12.4041.47 ± 3.07137.13 ± 14.477.40 ± 0.0284.25 ± 15.0641.39 ± 2.90137.13 ± 15.960.7370.9900.9790.719 Preoperative FEV Preoperative FVC Preoperative FEV2.66 ± 0.463.29 ± 0.5480.53 ± 3.522.78 ± 0.463.44 ± 0.5780.72 ± 3.310.2510.2460.799 Lobectomy Wedge resection Segmentectomy28(70.0%)8(20.0%)4(10.0%)30(75%)8(20.0%)2(5.0%)Data are expressed as mean ± standard deviation or number of patients. 