Esophagus Tests

Bernstein Test

Results

Esophagus tests measure muscle pressure and movement, coordination, and strength of the tube that connects the throat to the stomach (esophagus). It also tests how well the ring of muscles (sphincters) at the top and bottom of the esophagus work. Results are usually available in 2 to 3 hours.

pH monitoring

Normal:	The pH of the esophagus is between 4 and 6.
Abnormal:	The pH of the lower esophagus is frequently below 4. If acid is placed in the stomach, it lowers the pH of the lower esophagus.

 

Esophageal manometry

Normal:	The pressure of the muscle contractions that move food down the esophagus is normal. The muscle contractions follow a normal pattern down the esophagus. Normal pressure of the lower esophageal sphincter (LES) is about 15 millimeters of mercury (mm Hg). The pressure is less than 10 mm Hg when the LES relaxes to let food pass into the stomach.
Abnormal:	Muscle spasms are present in the esophagus. Contractions along the esophagus are weak. The LES pressure is less than 10 mm Hg. The LES pressure is high and fails to relax after swallowing.

 

Many conditions can change the results of esophagus tests. Your health professional will discuss any significant abnormal results with you in relation to your symptoms and past health.

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Author:	Maria G. Essig, MS, ELS	Last Updated: May 8, 2007
Medical Review:	Kathleen Romito, MD - Family Medicine Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology
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