Gastroenteroscopy together increases the anesthesia time. Gastroenteroscopy together slightly increases the anesthesia time compared to painless gastroscopy or colonoscopy alone.
The anesthesia time for gastroenteroscopy is usually about 40 minutes, compared to about 15 minutes for gastroscopy alone, and about 20 minutes for colonoscopy alone, except for other scopes, such as endoscopic polyp removal.
It is also important to note that you need to stop smoking and drinking 3 days before the gastroenteroscopy to avoid stomach irritation from alcohol and cigarettes. Fasting for 6 to 8 hours before the examination, and no water 3 hours before the examination, in order to facilitate the pharyngeal anesthesia of gastroscopy.
The preparation for colonoscopy includes: eating low residue and low fiber food 3 days before the examination, and eating a semi-liquid diet, such as egg cake, rice porridge, and so on. 1 day before the examination, you need to take laxatives polyethylene glycol or magnesium sulfate, clean enema, the above drugs need to be taken under the supervision of the physician.
As the operation time of gastroenteroscopy is very short, relatively small amount of anesthesia is used, and there are professional anesthesiologists and clinicians for preoperative evaluation, and the dose of anesthetics that is most adaptable to the human body will be used to give the appropriate anesthesia time.