​ Conditions: Vagus Nerve Stimulation; Transcutaneous Electric Nerve Stimulation; Noncardiac Surgery; Quality of Recovery

Interventions: Device: Transcutaneous auricular vagus nerve stimulation; Device: Sham stimulation

Sponsors: Peking University First Hospital

Not yet recruiting Conditions: Vagus Nerve Stimulation; Transcutaneous Electric Nerve Stimulation; Noncardiac Surgery; Quality of Recovery
Interventions: Device: Transcutaneous auricular vagus nerve stimulation; Device: Sham stimulation
Sponsors: Peking University First Hospital
Not yet recruiting