How much damage does gastroscope do to human body?

Gastroscopy is widely carried out at this stage, and it is the first choice for gastropathy at this stage. Simple gastroscopy generally takes only 5-10 minutes, and rarely causes damage to the stomach mucosa, so it basically does not harm the human body, but the examined person will show different degrees of nausea, abdominal distension and other manifestations. However, if tissue biopsy or endoscopic treatment is required, such as polypectomy and submucosal resection, there will be certain risks, which may cause bleeding, perforation, severe hemorrhagic shock and diffuse peritonitis, and even life-threatening. If painless gastroscopy is selected, it may also show the risk of anesthesia on the basis of the risk of ordinary gastroscopy, and serious hypoxic encephalopathy may also cause vegetative state.