Esophageal manometric and impedance studies
Esophageal manometric and impedance studies -- pressure
measurement of the esophagus -- occasionally help to recognize low pressure in
the lower esophageal sphincter or abnormalities in esophageal muscles
contraction.
For patients whose diagnosis is difficult, doctors may check
the acid levels inside the esophagus by pH testing. Testing pH monitors the
acidity level of the esophagus and symptoms during meals, activity, and sleep.
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