Esophageal rings and strictures are a common cause of dysphagia. Endoscopic dilation, forceps disruption, or a combination are often employed to alleviate symptoms. Although rings have been reported to require fewer repeat dilations and increased time to repeat dilation, the clinical impact of mode of dilation remains unclear. We aimed to determine whether disruption at time of dilation would increase time to subsequent intervention. We performed a retrospective analysis of all adult patients who underwent esophageal disruption and/or dilation of a ring or stricture in 2015 at a tertiary care center. Individuals were excluded if they had had prior radiofrequency ablation, endoscopic mucosal resection, achalasia, any malignancy, history of chemotherapy or radiation, or prior foregut surgeries. From the electronic medical record, we extracted age, BMI, gender, time to next dilation, type of dilator, size of dilation, and use of anti-secretory medications. Rings or strictures were defined based on the descriptor used in the endoscopic record. Data was analyzed utilizing Fischer’s Exact Test for categorical data, Mann-Whitney for continuous variables, and Kaplan-Meier to compare time to repeat dilation. Of 548 patients, 195 met inclusion criteria (age 60.9±0.9, BMI 28.0±0.5, 66% female). Age, BMI, and gender did not influence need for repeat dilation (p=ns for each). Balloon dilation (78%) was used more often than bougie dilation (19%) or forceps disruption alone (4.1%). Antisecretory medication use with dilation compared to no use (81% vs 19%) did not reduce need for repeat dilation (52.2% vs 50.0%, 0.8) or shorten time to repeat dilation (503 vs 404 days, p=0.8). Rings were more likely than strictures (33% vs. 66%) to be disrupted with forceps prior to dilation (45.5% vs 21.7%, p=0.001) and to a larger dilation size (18.7 mm vs 17.6 mm, p=0.009).When forceps disruption was performed with dilation (29.7%), time to repeat dilation was numerically longer (504.9 vs 477.04 days, p=0.4) with similar need for repeat dilation (47% vs. 54%, p=0.3). There was no significant difference in time to repeat dilation (568.5 vs 447.3 days, p=0.2) or need for repeat dilation (47% vs 54%, p=0.3) between rings and strictures, with or without forceps disruption. When analyzing mode of dilation, patients managed with bougie dilation had significantly prolonged time to repeat dilation when forceps disruption was also performed compared to bougie dilation alone (851±248 vs. 237±76 days respectively, p=0.01), similar findings were not seen with balloon dilation (404.33 vs. 542.21, respectively p=0.3). These findings were supported by Kaplan Meier hazard analysis (Figure). Stricture or ring disruption with bougie dilation significantly prolongs time to repeat dilation, although this trend was not found with balloon dilation.
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