Impedance pH Probe

Pediatric Gastroenterology

Impedance pH Probe

The pediatric gastroenterology specialists at the American Family Children's Hospital in Madison, Wisconsin, treat disorders of the gastrointestinal tract, including the esophagus, stomach, intestines, liver and associated organs.
 
An impedance pH probe is performed in special circumstances to evaluate for gastroesophageal reflux. It can determine both acid and non-acid reflux and can be used to determine how effective treatment is. In some instances, it may help explain nighttime coughing, hoarseness or other symptoms.
 
What to Expect
  • The test is performed over a period of 24 hours. 
  • You and your child will come to the Ambulatory Procedure Center on the second floor of University of Wisconsin Hospital and Clinics.
  • A thin, plastic tube with sensors will be placed into one nostril and advanced into the esophagus.
  • A chest X-ray will be performed to confirm the correct position of the tube. The tube is connected to a small recording box that your child will carry around for the duration of the study.
  • Your child will continue to participate in normal activity. You will need to record everything the child does during the testing period. This includes eating, sleeping, coughing, crying or refusing to eat.
  • After 24 hours, the tube is removed and the information obtained is analyzed. We will call you when we receive the results.