The effect of electrical stimulation generated by neuromuscular transmission monitor to the HT7 acupuncture point on preventing emergence agitation in children. A prospective double-blind randomized controlled trial

INTERVENTION: HT7 stimulation group: we plan to stimulate both right and left sides of HT7 acupuncture site using neuromuscular transmission monitor (TOFwatch). Single‐twitch stimulation with 1 Hz (over 0,2 ms, at a constant current of 50 mA) was applied for the group throughout operation. Control group: The NTM electrode attachments are placed on all subject at both left and right hand of HT7 acupuncture site, but electrical stimulation is not applied. CONDITION: Pediatric patients who are scheduled to undergo surgery under general anesthesia. PRIMARY OUTCOME: incidence of emergence agitation under general anesthesia with sevoflurane in children SECONDARY OUTCOME: rescue drug use for the emergence agitation, rescue drug use for the postoperative pain, severity of the agitation, and severity of the pain INCLUSION CRITERIA: ASA 1 or 2 Patients who are scheduled to undergo surgery under general anesthesia with sevoflurane