taVNS Reduces Postoperative Pain and Complications in Patients With Gastric and Intestinal Tumors

Set the pulse width to 200 microseconds, frequency to 30 Hz, and start the current at 10 mA. Gradually increase the current until the patient reaches their pain tolerance threshold, and cap it at 50 mA，last for one hour.During the intervention, dynamic ECG monitoring was conducted using an ECG monitor, starting 10 minutes before the stimulation and ending 10 minutes after the stimulation.

Set the pulse width to 200 microseconds, frequency to 1 Hz, and start the current at 10 mA. Gradually increase the current until the patient reaches their pain tolerance threshold, and cap it at 50 mA，last for one hour.During the intervention, dynamic ECG monitoring was conducted using an ECG monitor, starting 10 minutes before the stimulation and ending 10 minutes after the stimulation.