Contractions along the esophagus are
weak or uncoordinated.
The LES pressure is low.
pressure is high and fails to relax after swallowing.
Many conditions can change the results
of esophagus tests. Your doctor will discuss any significant abnormal results
with you in relation to your symptoms and past health.
What Affects the Test
Reasons you may not be able to
have the test or why the results may not be helpful include:
Taking certain medicines. Many medicines can affect the results of pH testing or esophageal manometry. Make sure you follow your doctor's instructions about which medicines to stop or to take before and during testing.
Smoking or drinking alcohol
within 24 hours of the test.
Eating or drinking within 8 hours of
the test, unless you are having prolonged pH monitoring at home. If you are having prolonged pH monitoring, try to eat normally and do your normal activities.
Detachment of the wireless pH capsule before the end of the recording time (usually 24 or 48 hours).
Movement of the catheter when you swallow.
What To Think About
Occasionally, samples of stomach secretions may
be taken during the pH monitoring test.
Combining multichannel intraluminal impedance testing with pH (MII-pH) can record reflux, even if it's not acidic. pH testing by itself will only record acidic reflux events.
Other tests may be done to
help diagnose problems with the esophagus, including upper gastrointestinal
(UGI) endoscopy, barium swallow, or upper gastrointestinal studies (upper GI
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