High-resolution esophageal manometry

Esophageal manometry measures the strength and coordination of the muscles of the esophagus — the swallowing tube between the throat and the stomach. A soft, thin catheter with pressure sensors along its length is passed through the nose into the esophagus, and you take small sips of water while it records. High-resolution means the sensors are closely spaced, producing a detailed picture of each swallow.

This test answers questions about how the esophagus works, rather than how it looks. Dr. Gomez may recommend it for trouble swallowing, food that feels like it stops on the way down, chest discomfort that is not coming from the heart, or reflux that has not responded to treatment. It is also used before certain surgeries to confirm the muscles are moving normally.

The test is done awake, without sedation, so you can swallow on cue. The nose and throat are numbed first, and the catheter is about the width of a piece of spaghetti; most people find the first moments the most noticeable and settle quickly once it is in place. You will be asked to swallow small amounts of water while the sensors record. The catheter is removed at the end of the visit and you can return to your usual routine.