Intensive Care Medicine

, Volume 14, Issue 3, pp 232–235 | Cite as

Intragastric pH measurement using a novel disposable sensor

  • M. J. Heath
  • J. D. Owen
  • S. W. Sanders
  • K. G. Tolman
Methods and Devices

Abstract

An unique disposable pH sensor molded into the end of a nasogastric tube was tested in twelve healthy human volunteers. A Spearman's rank corelation coefficient (rs) of 0.90 was observed for the sensor and an indwelling miniature glass membrane electrode. The sensor did not correlate as well with aspirated stomach fluid (rs=0.68). No sensor calibration was necessary and the sensors measured ±0.1 pH in laboratory pH buffers before and after the clinical study. Both bare and shielded disposable sensors closely agreed with a shielded miniature glass electrode.

Key words

Gastric pH Disposable pH sensor Indwelling measurement Gastric fluid aspiration 

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • M. J. Heath
    • 1
  • J. D. Owen
    • 1
  • S. W. Sanders
    • 2
  • K. G. Tolman
    • 2
  1. 1.Zinetics Medical Technology Inc.Salt Lake CityUSA
  2. 2.Division of GastroenterologyUniversity of Utah School of MedicineSalt Lake CityUSA

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