Comparative Efficacy of Dexlansoprazole, Pantoprazole, Esomeprazole, and Rabeprazole in Achieving Optimal 24-Hour Intragastric pH Control: A Randomized Crossover Study Using Ambulatory pH Monitoring.

Introduction: Proton pump inhibitors (PPIs) regulate gastric acid reflux. Dexlansoprazole's efficacy in prolonging acid suppression compared to conventional PPIs and placebo requires evaluation.

Methods: A prospective, randomized, placebo-controlled, five-way crossover pilot study was conducted on healthy volunteers comparing the potency of dexlansoprazole to conventional PPIs in which five patients were randomized into five treatment cohorts, including dexlansoprazole 60 mg, pantoprazole 40 mg, esomeprazole 40 mg, rabeprazole 20 mg, and placebo, assessing 24-hour intragastric pH using Z/pH Recorder (ZepHr®, Diversatek, Inc.

Simple mathematical equation to predict distance to gastroesophageal junction through the submucosal tunnel during peroral endoscopic myotomy.

 Accurate estimation of the distance to the gastroesophageal junction (GEJ) through a tunnel during per oral endoscopic myotomy (POEM) is technically challenging. The methods currently employed are often insufficient, and resultant errors may lead to incomplete myotomy and/or prolonged procedure times. Our hypothesis states that the additional distance while traversing the tunnel is directly proportional to the widest esophageal diameter; and is calculated by the formula X = Y + CZ (X = distance to the GEJ through the tunnel, Y = distance to the GEJ through the lumen, Z = widest esophageal diameter, C = arithmetic constant).