Ineffective esophageal motility in Chicago Classification version 4.0 better predicts abnormal acid exposure

The updated Chicago Classification version 4.0 (CCv4.0) establishes a more stringent criteria to diagnose ineffective esophageal motility (IEM). This study aims to investigate the clinical significance of IEM in CCv4.0 in the context of gastroesophageal reflux disease (GERD).A retrospective study was conducted among suspected GERD patients who had heartburn and/or regurgitation as their chief complaints and completed esophageal function tests in...