Transcutaneous Electrical Acupoint Stimulation for Prevention of Postoperative Nausea and Vomiting

This study intends to carry out a high-quality clinical research with design specifications, large sample, multi-center, evaluator blinded, randomized and controlled methods. From September 1, 2019 to October 30, 2020, patients undergoing laparoscopic non-gastrointestinal surgery under general anesthesia will be recruited, based on the combination of dexamethasone and 5-HT3 antagonist, the efficacy of TEAS stimulation Neiguan (P6) and Zusanli (ST36) in the prevention and treatment of PONV will be verified. In TEAS group, bilateral P6 and ST36 TEAS intervention after removal tracheal intubation and on the first day after surgery, a total of 2 times, 30 minutes each time, 2/10 Hz low frequency sparse wave, 6-9 mA. The patients will be given maximum intensity stimulation at all points during the intervention.To ensure the blindness of the evaluator, the time of evaluation will be on the afternoon of the first and the second day, and the 30 days after the operation, and three evaluations will be made. The main indicators are the incidence of PONV 24 hours after operation, and the secondary indicators are the quantitative indicators of PONV and the indicators of rapid recovery after operation.