Effect of TEAS on PONV After Spinal Surgery

Transcutaneous Electrical Acupoint Stimulation will be administered delivered by the ES-130 device for 20 minutes at the time ondansetron is given (typically 30 minutes before the end of surgery). Subjects randomized to this intervention will have the TEAS device connected to the previously placed ECG patches to deliver the stimulus.

No Transcutaneous Electrical Acupoint Stimulation will be delivered to the subjects randomized to this group; ECG patches will be placed at the identified acupoints, however, no electrical stimulus will be delivered.