Esophageal Manometry
An advanced diagnostic test that precisely measures the rhythm, pressure, and movement (motility) of your esophagus as you swallow to find clear answers for frustrating and disruptive swallowing issues, persistent chest pain, and stubborn heartburn
Why Is This Test Performed?
An esophageal manometry is the gold standard for evaluating the mechanics of your digestive tract. We typically recommend this test to get to the root of:
Difficulty or pain when swallowing (dysphagia)
Non-cardiac chest pain that hasn’t been explained by a heart specialist
Severe, stubborn heartburn or acid reflux that doesn't respond to medication
Pre-surgical evaluations (such as before an anti-reflux surgery) to ensure the esophageal muscles are strong enough
Understanding the Components of Your Test
Depending on your symptoms, your physician may combine your manometry with other advanced monitoring tools:
Manometry: Measures the precise muscular pressure and coordination of your esophagus and the lower esophageal sphincter (the valve connecting to your stomach).
pH Testing: Measures the exact acidity levels inside your esophagus over a 24-hour period to diagnose severe acid reflux (GERD).
Impedance Testing: Examines how both liquids and gases travel up and down the esophagus, tracking non-acidic reflux.
How to Prepare for Your Procedure
To ensure an accurate and comfortable test, a brief fasting window is required:
Fasting Guidelines: Your stomach must be completely empty. Our team will provide you with specific instructions on when to stop eating and drinking prior to your appointment. No special pre-test diets are required.
Medication Coordination: Certain medications can alter muscle function and acid levels, affecting your test results. Your gastroenterologist will tell you exactly which medications (especially acid blockers or muscle relaxants) to pause or continue.
Medical Records: If you are being referred to our hospital by an outside provider specifically for this test, our team will safely review your medical history and previous test records before your appointment.
What to Expect During the Procedure
Your test will take place in our hospital’s advanced, outpatient GI motility lab. Our team is highly trained to keep you relaxed and comfortable throughout the process.
Phase 1: Positioning the Catheter
A specialized nurse will gently guide a small, ultra-thin, flexible catheter through your nose, down the back of your throat, and into your esophagus. You will be asked to take small sips of water to help the tube glide down naturally. Any sensation of discomfort is brief and minor.
Phase 2: The Manometry Test (Approx. 20 Minutes)
The catheter is connected to a computer that records real-time pressure data. While lying comfortably on your back, you will take small sips of water on command. The computer tracks how beautifully your esophageal muscles coordinate to push the fluid down. Because this test does not require sedation, you can comfortably drive yourself home immediately afterward.
Phase 3: Optional 24-Hour Monitoring (pH/Impedance)
If your doctor has ordered a 24-hour acid or fluid test, the small catheter will remain comfortably in place and connect to a lightweight, discreet recording device (about the size of a pager) worn on your belt.
You will return home for the day and resume your normal meals, sleep, and daily activities.
We will give you a simple diary to log your meal times and any moments you experience symptoms like heartburn or chest pain.
The next morning, you will return briefly to our lab to have the catheter easily removed.
What to Expect After the Procedure
Immediate Recovery: Once the manometry is complete, you can immediately return to work, drive, and eat your normal diet. There are no lasting side effects.
Your Results: A specialized physician will carefully analyze the complex data map collected by the computer. A comprehensive report will be sent to your referring doctor within a few days, and our team will coordinate with you to discuss the next steps in your care plan.
Understanding Risks & Alternatives
Are There Risks?
An esophageal manometry is exceptionally safe and complications are incredibly rare. Some patients may experience minor, temporary side effects during the placement of the tube, such as:
A mild sore throat or gagging reflex that passes quickly
A minor nosebleed
Are There Alternatives to This Test?
Simply put, there are no true alternatives that provide the precise nerve and muscle data that an esophageal manometry offers.
While our team will usually perform an endoscopy first to rule out structural issues, or order a barium swallow (an X-ray video of your swallow) to get an initial look, a normal result on those tests cannot rule out a muscular or nerve disorder. To accurately diagnose complex motility diseases like achalasia or severe spasms, a manometry is essential.