[Effect of transcutaneous electrical acupoint stimulation on postoperative olfactory memory disorder and plasma melatonin in patients with general anesthesia of sevoflurane].

Objective: To observe the effect of transcutaneous electrical acupoint stimulation (TEAS) on postoperative olfactory memory disorder in patients with general anesthesia of sevoflurane and to explore its possible mechanism.

Methods: Forty patients who were scheduled to have gynecological and urological procedures under general anesthesia were randomly divided into an observation group and a control group, 20 cases in each group. The patients in the observation group were treated with TEAS (dilatational wave, 2 Hz/100 Hz) at Yingxiang (LI 20) and Yintang (GV 29) 10 min before anesthesia induction until the end of operation; the patients in the control group received general anesthesia directly.