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11 July 2018 : Clinical Research

Comparison of Esophageal Function Tests to Investigate the Effect of Helicobacter Pylori Infection on Gastroesophageal Reflux Disease (GERD)

Lan Liu1ABE, Hongwei Gao2BC, Hongjuan Wang1BCDF, Weihua Yu1CF, Kongxi Zhu3ABC, Yuan Zhang4BCF, Jianqiang Guo1AEG*

DOI: 10.12659/MSM.908051

Med Sci Monit 2018; 24: CLR4791-4797

Abstract

BACKGROUND: The effects of Helicobacter pylori (H. pylori) infection on gastroesophageal reflux disease (GERD) remain unclear. The aim of this study was to compare the results of clinical esophageal function tests and the effect of H. pylori infection on GERD.

MATERIAL AND METHODS: A prospective clinical study included 124 patients diagnosed with GERD (four grades). H. pylori infection was determined by gastroscopy and a rapid urease test (RUT) to divide patients into an HP-positive and an HP-negative group. Esophageal function tests included high-resolution manometry (HRM), peristalsis break (PB), and 24-hour pH monitoring (composite pH DeMeester score). Different grades of GERD, with and without H. pylori infection, esophageal function test results were analyzed.

RESULTS: The HP-positive group, compared with the HP-negative group with GERD, showed a significantly reduced median PB value (3.41±3.65 vs. 6.18±5.27), reduced PBs >5 cm per ten swallows (2.23±3.05 vs. 4.04±3.70) indicating that that H. pylori infection improved esophageal peristalsis. During 24-hour esophageal pH monitoring, the HP-positive group showed a significantly reduced percentage of time for esophageal pH <4.0, number of reflux events >5 min, and number of reflux episodes in 24 hours, compared with the HP-negative group. The DeMeester score was significantly increased in the HP-negative group, indicating a higher esophageal acid exposure (9.11±8.15 vs. 24.30±30.27).

CONCLUSIONS: H. pylori infection improved esophageal peristalsis, enhanced lower esophageal sphincter (LES) pressure, and reduced esophageal acid exposure, which might be protective factors for GERD.

Keywords: esophageal pH monitoring, Gastroesophageal Reflux, Helicobacter pylori, Manometry

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750