Transcutaneous Electrical Acupuncture Stimulation for Alleviating Post-Gastroscopy Discomfort Symptoms in Patients: a Clinical Study

INTERVENTION: Treatment group:Stimulation of acupoints and stimulation parameters: Neiguan point (PC6, 2 cun above the transverse crease of the wrist, between the palmaris longus tendon and the flexor carpi radialis tendon), stimulation parameters for Neiguan: pulse direction is unidirectional, stimulation time 1s, interval time 4s, frequency 100Hz, pulse width 0.5ms, current intensity set to the patient's maximum tolerance; Zusanli point (ST36, 3 cun below the external knee joint, at the anterior spine of the tibia, one transverse finger outward, on the line connecting Dubei and Jieshi), stimulation parameters for Zusanli: pulse direction is unidirectional, stimulation time 2s, interval time 3s, frequency 25Hz, pulse width 0.5ms, current intensity set to the patient's maximum tolerance. Treatment time: 30 minutes before endoscopic examination and during the procedure.;Control Group:Stimulation sites and parameters: Lateral side of the forearm, midpoint between the elbow transverse crease and the wrist dorsal transverse crease, the muscle area between the ulna and radius where the muscles are thick; posterior side of the calf, midpoint between the popliteal transverse crease and the Achilles tendon, the most prominent and thickest part of the medial belly of the gastrocnemius muscle. Stimulation parameters: Consistent with the treatment group. Treatment time: 30 minutes before endoscopy examination and during the procedure.; CONDITION: Discomfort symptoms after routine gastroscopy PRIMARY OUTCOME: Nausea severity rating;Vomiting Episode Frequency Scoring;Throat pain rating;Abdominal Distension Severity Scoring; SECONDARY OUTCOME: Heart Rate Variability;Gastric Electrogastrography;Anxiety Self‐Rating Scale;Depression Self‐Rating Scale; INCLUSION CRITERIA: 1) Age = 18 years old; 2) Those willing to sign the informed consent form; 3)Those planning to undergo a routine gastroscopy.