What you can expect

Esophageal manometry can be performed using conventional manometry or high-resolution manometry. High-resolution manometry uses more pressure sensors and is more accurate at assessing pressure changes than is conventional manometry.

This test is done as an outpatient procedure without sedation. Most people tolerate it well. You might be asked to change into a hospital gown before the test starts.

During esophageal manometry

• While you are sitting up, a member of your health care team sprays your throat with a numbing medication or puts numbing gel in your nose or both.
• A catheter is guided through your nose into your esophagus. The catheter may be covered by a water-filled sleeve. It doesn't interfere with your breathing. However, your eyes might water, and you might gag. You might have a slight nosebleed from irritation.
• After the catheter is in place, you'll be asked to lie on your back on an exam table or to remain seated.
• You then swallow small sips of water. As you do, a computer connected to the catheter records the pressure, speed and pattern of your esophageal muscle contractions.
• During the test, you'll be asked to breathe slowly and smoothly, remain as still as possible, and swallow only when you're asked to do so.
• A member of your health care team might move the catheter up or down into your stomach while the catheter continues its measurements.
• The catheter then is slowly withdrawn.

The test usually lasts about 30 minutes.

After esophageal manometry

When your esophageal manometry is complete, you can return to your normal activities.