The EGD is performed with a narrow, flexible tube that goes through the mouth. The doctor will attach a pH monitoring device to the inner lining of your esophagus during the test to see how much acid is in your lower esophagus. This test helps to plan treatment for your condition.
What does the exam involve?
You will be given IV sedation to help you relax. A spray may be given to numb the back of your throat. The doctor will insert a thin, flexible tube into your mouth and ask you to swallow. The tube does not cause breathing problems. It is gently moved forward into your esophagus. At the top of this tube is a tiny camera. It shows an image to help the doctor move the tube further into the esophagus.
At the end of the tube is a special capsule that will be attached to the side of your esophagus. The capsule measures the acidity in your esophagus and sends a wireless signal to a small receiver box that you will wear on your clothes.
Over the next 48 hours you will record your meals and any symptoms in a diary. You will return the diary sheet and receiver box after 48 hour testing period ends.
The capsule will fall off after 7 to 10 days, pass naturally through the GI tact, and come out in your stool. You do not need to look for the capsule; all test information is stored in the receiver.