A frequency‐duration index (FDI) for the evaluation of ambulatory recordings of gastro‐oesophageal reflux

F. J. Branicki, D. F. Evans, J. A. Jones, A. L. Ogilvie, M. Atkinson, J. D. Hardcastle

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Oesophageal pH monitoring has been undertaken in 20 symptomatic patients and 20 normal subjects for periods of 24 hours at work and in the home using a pH sensitive radiotelemetry capsule and a portable receiving system. There was no correlation between symptoms and endoscopic findings in symptomatic patients. The number and duration of reflux episodes was greater in symptomatic patients than normal subjects during 24 hour ambulatory study (P < 0·002). A frequency‐duration index for the evaluation of recordings is described which was significantly greater in symptomatic patients than in normal subjects during both day (P < 0·002) and night (P < 0·008) periods of recording. Discrimination between the two groups was more clearly seen using the frequency‐duration index compared to either the frequency of reflux episodes or the cumulative duration of acid reflux.

Original languageEnglish
Pages (from-to)425-430
Number of pages6
JournalBritish Journal of Surgery
Volume71
Issue number6
DOIs
Publication statusPublished - Jun 1984
Externally publishedYes

Keywords

  • Oesophageal pH
  • ambulatory monitoring
  • radiotelemetry

ASJC Scopus subject areas

  • Surgery

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