Validation of a new method for the endoscopic measurement of post-bariatric gastric outlet using a standard guidewire: an observer agreement studyReport as inadecuate




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BMC Research Notes

, 10:13

Gastroenterology

Abstract

Background and aimsBetween 10 and 20% of all patients undergoing bariatric surgery procedures regain weight secondary to a gastrojejunostomy enlargement. The aim of this study was to validate the interobserver agreement while measuring gastric outlet diameters using a new standard guidewire.

MethodsWe selected thirty-five videos of consecutive endoscopic procedures on patients undergoing esophagogastroduodenoscopy after a Roux-en-Y gastric bypass procedure. All videos were evaluated by four raters: two expert endoscopists and two trainees. We excluded videos having a slipped Fobi ring or a strictured gastric outlet. Anastomosis diameter was measured using a novel device with standardized markings on a guidewire Hydra jagwire, Boston Scientific, Natick. MA as well as the current gold standard defined as a calibrated endoscopic measuring instrument Olympus America, Center Valley, PA.

ResultsWe obtained 272 measurements of the gastric outlet. Overall agreement measured through intra-class correlation coefficients for the gold standard was 0.84 p < 0.01 and 0.83 p < 0.01 for the new guidewire. Agreement among experts was 0.699 p < 0.01, while among trainees it was 0.822 p < 0.01.

ConclusionThe new guidewire demonstrated a high degree of observer reliability, also presenting similar results between expert endoscopists and trainees.

KeywordsGastric outlet Observer agreement Measurement reliability Weight regain Weight recidivism Upper endoscopy  Download fulltext PDF



Author: Luiz Gustavo de Quadros - Manoel dos Passos Galvão Neto - Josemberg Marins Campos - Roberto Luiz Kaiser Junior - Eduardo

Source: https://link.springer.com/







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