After a gastroscopy, the patient will be observed for a period of time, usually less than an hour, while the sedative is eliminated from the body. This is a safe technique, but in some cases complications can also occur.

Upper gastrointestinal endoscopy, including gastroscopy, is a technique used to directly examine a patient's upper digestive system with a small camera mounted at the end of the endoscope. Doctors use endoscopy to diagnose disease and sometimes, treat gastrointestinal problems during endoscopy.