First, be sure to give your doctor a complete list of all the medicines you are taking and any allergies you have to drugs or other substances. Your doctor will also want to know if you have heart, lung, or other medical conditions that may need special attention before, during, or after upper GI endoscopy. You will be given instructions in advance that will outline what you should and should not do in preparation for the upper GI endoscopy. Be sure to read and follow these instructions.
One very important step in preparing for upper GI endoscopy is that you should not eat or drink within eight to ten hours of your procedure even though you can drink water up to 2 hrs before the procedure. Food in the stomach will block the view through the endoscope, and it could cause vomiting and sometimes aspiration into your lungs.
Upper GI endoscopy can be done in either a hospital or outpatient office. You’ll be asked to sign a form that verifies that you consent to having the procedure and that you understand what is involved.
If there is anything you don’t understand, ask for more information!