J. M. Miller, S. W. Fannin, V. J. Greczanik, N. L. Crocker, J. M. Kraus, W. H. Falor, B. C. Taylor

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have developed an ambulatory esophageal pH monitoring system which is configured as a network of satellite data recorders utilizing telecommunications to transfer data to a central computer for storage, analysis, and reporting. Our system records data from ambulatory patients who begin and end the test in their physicians' offices. The recorded data are then transmitted via phone lines to a centrally located computer for processing. The patient worn data recorder is capable of recording 4 channels of pH data for up to 32 hours. Recording of pH from more than one location, in situ, offers advantages in the diagnosis of gastro-esophageal reflux. First, by recording the pH of the stomach as well as the esophagus, criteria for reflux may include equalization of gastric and esophageal pH. Second, by placing sensors at intervals along the esophagus, the height of the reflux column may be determined. Miniature antimony electrodes are used as pH sensors.

Original languageEnglish (US)
Title of host publicationUnknown Host Publication Title
PublisherAssoc for the Advancement of Medical Instrumentation
Number of pages1
ISBN (Print)0910275343
StatePublished - 1984

ASJC Scopus subject areas

  • Engineering(all)


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