RecruitingDevice studyEffect of TEAS on PONV After Spinal SurgeryThe proposed research will utilize electroacupuncture, a type of needleless acupuncture that uses electrostimulation, in a randomized, double blind study, to evaluate the incidence of post-operative nausea and vomiting (PONV) in patients undergoing spinal surgeries with the transcutaneous electrical acupoint stimulation (TEAS) compared to patients without TEAS.