The Effect of Per-Oral Endoscopic Myotomy by Achalasia Subtype As Measured by Impedance Planimetry
Surgical endoscopy(2024)
Abstract
Achalasia is an esophageal motility disorder with three subtypes based on manometry that can treated with per-oral endoscopic myotomy (POEM). With the advent of impedance planimetry (EndoFLIP®), we hypothesized the three achalasia subtypes would have different pre-POEM EndoFLIP® diameter and distensibility index (DI) measurements but would be similar after POEM. A single-institution, retrospective review of consecutive POEM cases by a single surgeon-endoscopist team from 04/07/2017 to 08/28/2023. Patients with a diagnosis of achalasia were stratified into type 1, 2, or 3 based on pre-POEM manometry. Patient characteristics, Eckardt scores, and pre-and-post-POEM diameter and DI were compared by subtype with descriptive, univariate, and multivariable linear regression statistics. Sixty-four patients met inclusion criteria, of whom 9(14.1
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Key words
Per-oral endoscopic myotomy,Impedance planimetry,Achalasia subtype
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