Gastric aspiration versus antimony and glass ph electrodes: A simultaneous comparative in vivo study

V. Savarino, G. S. Mela, P. Zentilin, M. R. Magnolia, P. Scalabrint, F. Valle, M. More'iti, G. Bonifacino, G. Celle

Research output: Contribution to journalArticlepeer-review

Abstract

To carry out a simultaneous comparison of the 24-h in vivo performance of antimony and glass electrodes and the findings of intermittent gastric aspiration, a triple-probe system with closely adjacent tips was positioned in the gastric corpus of 10 subjects representing different clinical and pharmacologic conditions. We showed that pH values measured with the antimony and the glass units were well correlated to those assessed in gastric aspirates (rs = 0.87; b = 1.079; a = -0.33; and rs = 0.85; b = 1.121; a = -0.38, respectively). A proportional correlation (rs = 0.86; b = 0.97; a = 0.02) was also found between the two intraluminal pH measurements. With regard to the error frequency distributions obtained by comparing the three measuring systems two at a time, the pH pairs differed by no more than 1 pH unit in most cases (>90% It can be concluded that antimony and glass pH electrodes can be used interchangeably in 24-h intragastric acidity studies in man.

Original languageEnglish
Pages (from-to)434-439
Number of pages6
JournalScandinavian Journal of Gastroenterology
Volume24
Issue number4
DOIs
Publication statusPublished - 1989

Keywords

  • Antimony pH electrode
  • Gastric acidity measurement
  • Glass pH electrode
  • Nasogastric aspiration

ASJC Scopus subject areas

  • Gastroenterology

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