High resolution impedance manometry
Esophageal manometry is a test used to measure the pressures and the pattern of muscle contractions in your esophagus. Abnormalities in the contractions and strength of the muscle or in the sphincter at the lower end of the esophagus can result in pain, heartburn, and/or difficulty swallowing. Esophageal manometry is used to diagnose the conditions that can cause these symptoms.
A small, flexible tube is passed through your nose, down your esophagus and into your stomach. This tube is about 4 mm in diameter, and it does not interfere with your breathing. You are not sedated; however, a numbing gel will be applied to the inside of your nostrils to make the passage of the tube more comfortable. Once the tube is placed, you will be asked to swallow a small amount of water so that a computer can measure and record the strength and patterns of the contractions in your esophagus. The test will take approximately 30 minutes to complete and your physician will contact you with the results of the exam.
An empty stomach allows for the best and safest examination, so follow your physician’s fasting instructions before the test. Since many medications can affect esophageal pressure and the natural muscle contractions required for swallowing, be sure to discuss with your healthcare professional each medication you are taking. Your doctor may ask that you temporarily stop taking one or more medications before your test.
After the test, you may experience mild sore throat, stuffy nose, or a minor nosebleed; all typically improve within hours. Unless your physician has given you other instructions, you may resume normal meals, activities, and any interrupted medications.
SOURCE: ASGE patient information