Esophageal pH monitoring: are you sure that the electrode is properly placed?

The American Journal of Gastroenterology
J MonésF Mearin

Abstract

A crucial methodological aspect of ambulatory 24-h esophageal pH monitoring is electrode placement. Lower esophageal sphincter (LES) location is recommended for standard electrode positioning. The aim of the present study was to evaluate prospectively whether LES manometric location and intragastric pH acid confirmation suffice to guarantee that the pH electrode is properly placed. We evaluated data from 402 consecutive patients undergoing esophageal pH monitoring. LES location was determined by manometry, and the pH electrode was introduced until a pH recording <3 was obtained. Subsequently, it was positioned 5 cm above the proximal LES border. Thereafter, adequate catheter placement and absence of bends or loops were checked by fluoroscopy. Patients with bent or rolled catheters were instructed to have breakfast immediately, and catheter placement was checked again by fluoroscopy. When checked by fluoroscopy, the catheter was properly placed in 383 patients (95.3%). In the other 19 (4.7%), it was not located in the distal part of the esophagus owing to bending or rolling: 14 in the esophagus and five in the pharynx. After breakfast, 14 of the 19 malpositioned catheters were properly positioned whereas five remained bent or ro...Continue Reading

References

Aug 1, 1992·Digestive Diseases and Sciences·H E MattoxL D Case
Jul 1, 1987·Kansenshōgaku zasshi. The Journal of the Japanese Association for Infectious Diseases·A KimuraT Nakabayashi
Jul 21, 1998·Scandinavian Journal of Gastroenterology·F MearinJ R Malagelada

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Related Concepts

Related Feeds

Barrett Esophagus

Barrett’s esophagus if a serious complication of gastroesophageal reflux disease during which the normal esophageal lining changes to tissue that resembles intestinal lining. Here is the latest research.