If you are having trouble swallowing, pain during swallowing, chronic heartburn, or chest pain, your doctor may order an esophageal manometry test to discover the source of your problem.

The test measures the ability of the esophagus to move food down in to the stomach and also the function of the lower esophageal sphincter (a valve that prevents the acid in your stomach from coming back up into your esophagus). 

Before testing you should discuss any medications, including vitamins, you take with your doctor and be sure to follow the provided instructions.

During the test, you will be given some numbing medicine to minimize discomfort, and a small tube will be inserted through your nose and down your esophagus into your stomach. Then the tube is slowly removed; during the removal your doctor will direct you to swallow at specific intervals. The strength of the lower esophageal sphincter is measured as well as the strength of the muscle contractions along the esophagus. The tube is removed at the end of the test and you should be able to resume normal activities.