Predictive model for estimating total acid exposure time in patients with esophageal hypomotility disorders.

The latest Chicago Classification of esophageal motility disorders categorizes esophageal hypomotility disorders (EHD) into absent contractility (AC) and ineffective esophageal motility (IEM). While these disorders are commonly associated with gastroesophageal reflux disease (GERD), they are not pathognomonic. To improve diagnostic accuracy, provocative maneuvers during high-resolution esophageal manometry (HRM) -such as multiple rapid swallows (MRS) and single solid swallows (SSS) -have been introduced.