Transcutaneous electrical acupoint stimulation for preventing postoperative nausea and vomiting after general anesthesia: A meta-analysis of randomized controlled trials

•PONV are the most common complaints after postoperative pain.•The meta-analysis to evaluate the effectiveness of TEAS for preventing PONV after general anesthesia.•TEAS is a reasonable modality to incorporate into a multimodal management approach for the prevention of PONV, PON and POV after general anesthesia.•Application of TEAS also associated with lower numbers needing antiemetic rescue, lower incidence of adverse effects after general anesthesia.