Transcutaneous Electrical Nerve Stimulation Reduces the Incidence of Vomiting After Hysterectomy

The possible postoperative antiemetic effect of transcutaneous electrical nerve stimulation (TENS) on the P6 point (on the Pericardium Channel of Hand-Jueyin) was evaluated in 103 women undergoing hysterectomy. TENS on the P6 point was applied 30-45 min before induction of anesthesia in 51 patients and continued for 6 h postoperatively. The control group, 52 patients, was treated exactly in the same way but with the electrical stimulator turned off. Incidence of vomiting was assessed blindly 2 h, 4 h, 6 h, and 8 h postoperatively. The incidence of vomiting postoperatively was significantly less in the TENS-treated group when compared with the control group (between 0 h and 2 h: 23% vs 43%, P < 0.05; between 2 h and 4 h: 27% vs 50%, P < 0.025; and between 4 h and 6 h: 31% vs 67%, P < 0.001, respectively). Six hours postoperatively TENS was discontinued, and 8 h postoperatively the two groups did not differ significantly for incidence of vomiting (between 6 h and 8 h: 51% vs 65%). The authors conclude that TENS reduces the incidence of vomiting after hysterectomy.