You can’t smoke before gastroenteroscopy, because nicotine and tar and other harmful components in tobacco, after entering the gastrointestinal tract tissues, will cause irritation to the gastric mucosa, which will induce nausea, vomiting, acid reflux and other uncomfortable symptoms, affecting the smooth examination of gastroenteroscopy.
Precautions for gastroenteroscopy:
1. 3 days before the examination, you should eat more easily digestible food, such as thin rice, noodles, milk and other foods, and prohibit eating crude fiber food.
2. 4-6 hours before gastroscopy should be fasting.
3. Enteroscopy should take detergents according to the doctor’s instructions and requirements, clean the intestines, and the stool discharged is clear water or yellow water without slag before the examination.