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Updated: Dec 24, 2025

Robotic Myotomy and Partial Fundoplication for Achalasia
Published on: August 11, 2023
Esophagogastric Junction Opening Parameters Are Consistently Abnormal in Untreated Achalasia
Katharine P Rooney1, Alexandra J Baumann1, Erica Donnan1
1Division of Gastroenterology and Hepatology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois.
Abstract:
Achalasia is a disorder of impaired lower esophageal sphincter (LES) relaxation and failed peristalsis traditionally characterized by manometry.1 As impaired LES relaxation is a mechanism of reduced esophagogastric junction (EGJ) opening, abnormally reduced EGJ distensibility assessed with functional luminal imaging probe (FLIP) was reported among patients with untreated achalasia.2-5 Therefore, we aimed to describe the performance characteristics of EGJ opening parameters on FLIP panometry among a large cohort of treatment-naïve achalasia patients.
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