Reflux Patterns Characteristics of Iranian Patients with Nonerosive Reflux Disease (NERD) Based on 24-Hour Multichannel Intraluminal Impedance-pH (MII-pH) Monitoring Tests

Abstract

Introduction: Nonerosive gastroesophageal reflux disease (NERD) is the most common gastroesophageal reflux disease (GERD) and is associated with acid, weakly acid, nonacid, liquid, and mixed reflux. The present study aimed at evaluating the differences among gastroesophageal reflux patterns, number of reflux episodes and its composition in patients with NERD using combined multichannel intraluminal impedance-pH (MII-pH) monitoring tool in the Iranian population.