Esophageal manometry

Esophageal Manometry

Esophageal manometry is a medical test used to diagnose certain problems that affect the movement and function of the esophagus. By studying the strength and relfexive relaxations of the lower esophageal sphincter and muscles of the esophagus, this test can determine the causes of symptoms such as heartburn, difficulty swallowing or regurgitation.

Preparation

Before you undergo an esophageal manometry, your doctor may have you stop taking any medication related to your esophagus, such as antacids or gastric acid blockers. You will typically be asked not to eat or drink for at least six hours prior to the procedure, and may also be asked to stop smoking for several hours before.

Procedure

During an esophageal manometry, a thin and flexible tube is passed through your nose or mouth and into the esophagus. The tube is connected to a machine which measures pressure and movement of the esophageal muscles and lower esophageal sphincter. The tube monitors pressure that is generated by your swallowing, as well as any weak or missing muscle contractions in your esophagus.

Types of Esophageal Manometry

• Traditional Esophageal Manometry: Measures the pressure of the lower esophageal sphincter and the muscles of the esophagus. Pressure measurements are taken at rest and during swallowing.
• High Resolution Esophageal Manometry: Measures the pressure generated by the muscles of the esophagus. Pressure measurement is taken at rest and during swallowing.
• Impedance Manometry: Measures the pressure of the lower esophageal sphincter and the muscles of the esophagus. Also uses special sensors to measure changes in air and liquid throughout the esophagus.

Risks

The risks associated with esophageal manometry are typically mild and include a sore throat, mild chest pain, bloating, mild nausea, and mild vomiting.

Why is it done?

Esophageal manometry is done to diagnose problems with the movement and function of the esophagus, including symptoms such as heartburn, difficulty swallowing or regurgitation. It can also be used to diagnose gastroesophageal reflux disease (GERD).

When is it done?

Esophageal manometry is typically recommended if you have unusual symptoms, such as chest pain, difficulty swallowing, or regurgitation that prevents you from enjoying food or drink. Your doctor may also suggest this test if they believe you have gastroesophageal reflux disease (GERD) or have been unsuccessful at treating GERD with lifestyle changes or medications.