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24 Hour pH Study
This is a method of recording the acid content in the esophagus (swallowing tube) over a 24 hour period. [It is abnormal to have acid enter the esophagus and when this occurs it is known as GERD - gastroesophageal reflux disease]. A small tube is placed in the nostril and attached to a light weight, small recorder. This tube has special tranducers that record the pH level in the swallowing tube for a 24 hour time period. The patient returns the recorder in 24 hours, the information is placed on a computer and the doctor reviews and analyze. Usually the patient is held without food or water for at least 6 hours prior to the procedure.
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