Esophagus TestsResults
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.
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| 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.
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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.
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| 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.
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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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