For people who have done painless gastroscopy.

To do gastroscopy, you should swallow anesthetic first, and you can do gastroscopy after swallowing anesthetic for 5 minutes. First lie on your side in bed, with your legs bent, and then the doctor will put a cannula in your mouth to prevent your teeth from biting the tube of the gastroscope and protect your teeth. Then put a stainless steel plate under your chin. This is saliva. The doctor will intubate when he is ready. It may be a little uncomfortable at this time, and most people want to throw up. Don't be nervous at this time, take a deep breath and slowly deflate from your mouth. In this way, intubation will be less painful, and the tube will not feel anything when inserted into the stomach.