It is best not to smoke before a gastroscopy.
Although there is no clear rule that smoking is not allowed before gastroscopy, smoking will have an effect on the pharyngeal reflex and increase the sensitivity of the pharyngeal reflex, and the gastroscopy process requires the endoscope to be inserted through the pharyngeal area, which may increase the discomfort of the gastroscopy.
Moreover, smoking may cause patients to experience increased respiratory secretions, and such patients do not have voluntary swallowing movements during painless gastroscopy, and if the respiratory secretions increase at this time, adverse phenomena such as choking may occur. Therefore, it is best not to smoke before gastroscopy.
Patients who need to undergo gastroscopy should actively cooperate with the doctor’s operation process, and need to fully prepare their diet before gastroscopy.