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Reflux Monitoring

Indications & Risks


  • The Digitrapper and AccuTrac recorders obtain measurements of pH and/or impedance levels within the pharynx, upper esophageal sphincter (UES), esophagus, lower esophageal sphincter (LES), and stomach
  • The recorders are used to acquire pH and/or impedance levels and to store the corresponding data
  • The data can be uploaded to the AccuView analysis software, where the information can be viewed and aid a physician in diagnosing the cause of the reflux events


  • Patients with an inability to tolerate nasal intubation
  • Patients with significant bleeding disorders for whom nasal intubation is contraindicated
  • Patients with a known esophageal obstruction preventing passage of the instrument

Procedure Risks

The risks of catheter insertion into the nasal passage associated with Digitrapper pH-Z monitoring include discomfort, nasal pain, minor bleeding, runny nose, throat discomfort, irregular heartbeat with dizziness, and perforation. In rare instances, the catheter may shift up or down causing false results, or the catheter may be misdirected into the trachea causing coughing or choking.
Medical, endoscopic, or surgical intervention may be necessary to address any of these complications, should they occur.
The system is not compatible for use in an MRI magnetic field.

This information should not be used as a substitute for medical advice concerning specific diagnosis and treatment.