Smoking is not recommended before gastroscopy.
Gastroscopy may cause damage to the gastric mucosa, causing discomfort in the stomach, and cigarettes contain a large amount of tar, nicotine and other harmful substances, which may enter the stomach during the smoking process, irritate the gastric mucosa and aggravate the discomfort. Therefore, avoid smoking 24 hours before gastroscopy.
In addition, fasting is required before gastroscopy, ordinary gastroscopy is fasting for 8 hours before the examination, no food or drink, while painless gastroscopy usually requires fasting for 8-12 hours.
If severe vomiting, blood in the stool, stomach pain and other symptoms occur in patients after gastroscopy, it is recommended to go to a regular hospital in time, after clarifying the cause of the disease, and then carry out targeted treatment under the guidance of the doctor to minimize the adverse effects of the disease.