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Electro-acupuncture (EA) combined with local anaesthesia can reduce pain, alleviate side effects and improve the efficiency of gastroscopy procedures, according to a study from China. A total of 150 patients were divided into three groups: an EA group, a local anaesthetic group (oral dyclonine hydrochloride mucilage) and a combined treatment group. In the EA group, EA stimulation (2/15 Hz) was given at Hegu LI-4, Neiguan P-6 and Zusanli ST-36 for the duration of the procedure. Incidence of side effects during the examination was lower in the combined treatment group compared with the other two groups. Nausea and emesis scores, rates of successful first-pass intubation, and duration of procedure were also better in the combined treatment group. Furthermore, changes in heart rate and oxygen saturation during and after examination were better in the combined treatment group, suggesting less physiological distress due to the procedure.

The effectiveness of electro-acupuncture combined with dyclonine hydrochloride in relieving the side effects of gastroscopy: a controlled trial. Ann Palliat Med. 2021 Mar;10(3):2958-2970.