Your doctor may spray your throat with a local anesthetic spray, and then give you sedatives to help you relax. Your doctor then will pass the endoscope through your mouth and into the esophagus, stomach and duodenum. The endoscope does not interfere with your breathing. At this point your doctor will determine whether to use a dilating balloon or plastic dilators over a guiding wire to stretch your esophagus.
Most patients experience no symptoms after this procedure and can resume eating the next day, but you might experience a mild sore throat for the remainder of the day.
A perforation, or hole, of the esophagus lining occurs in a small percentage of cases and may require surgery. A tear of the esophagus lining may occur and bleeding could occur.
Depending on the degree of narrowing of your esophagus and its cause, it is possible repeat dilatation could be necessary.