• Bailey Su, Zachary M Callahan, Kristine Kuchta, John G Linn, Stephen P Haggerty, Woody Denham, and Michael B Ujiki.
• Department of Surgery, Northshore University HealthSystem, Evanston, IL; Department of Surgery, University of Chicago, Chicago, IL. Electronic address: bailey.su@uchospitals.edu.
• J. Am. Coll. Surg. 2020 Jul 1; 231 (1): 160-171.

BackgroundWe provide a comprehensive report of our institution's experience with the endoluminal functional lumen imaging probe (Endoflip) impedance planimetry system, a device that can be used intraoperatively to objectively evaluate the distensibility of any sphincter of the gastrointestinal tract. We aim to describe the variety of ways in which the Endoflip can be used in a foregut surgeon's practice.Study DesignThis is a retrospective review of a prospectively maintained quality database of all patients in which the functional lumen imaging probe (FLIP) system was used between February 2013 and June 2019.ResultsDuring the study period, 402 FLIP cases were performed: 226 fundoplications, 94 peroral endoscopic myotomies, 15 peroral pyloromyotomies, 12 antireflux mucosectomies, 11 magnetic sphincter augmentations, 9 laparoscopic Heller myotomies, 8 pre-esophagectomy esophagogastroduodenoscopies (EGDs), 4 diagnostic EGDs, 8 endoscopic Zenker's diverticulotomies, 5 post-peroral endoscopic myotomy EGDs, 8 EGDs with dilations, and 2 transoral incisional fundoplications.ConclusionsWithin a foregut surgeon's practice, the FLIP can be used to measure the upper esophageal sphincter, lower esophageal sphincter, and pylorus in a variety of clinical scenarios and settings.Copyright © 2020 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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