why the ph change causing acidity?
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The esophageal pH test is an outpatient procedure performed to measure the pH or amount of acid that flows into the esophagus from the stomach during a 24-hour period.
The procedure is commonly used to help confirm the diagnosis of GERD or to identify the cause of various symptoms, including:
Heartburn , primarily in patients who have had a normal endoscopy and who have failed medical treatment or may be considered as candidates for surgery
Uncommon symptoms of GERD (gastroesophageal reflux disease), such as chest pain, chronic cough, asthma, and other throat symptoms
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