Abstract

Abstract Introduction The artificial urinary sphincter (AUS) remains the gold standard for male stress urinary incontinence. However, current understanding of which patient- and facility-level characteristics that are associated with inpatient versus (vs.) outpatient AUS procedures is limited on a national scale. Objective We therefore sought to evaluate contemporary national trends of AUS procedures. Methods We performed a retrospective review of male AUS procedures using the National Inpatient Sample and the Nationwide Ambulatory Surgery Sample – the largest publicly available all-payer inpatient and ambulatory healthcare databases in the United States – from 2016 to 2019. AUS insertion, repair, replacement, and removal were identified by Current Procedural Terminology and International Classification of Diseases (10th Revision) Procedure Coding System codes. Our unit of analysis was inpatient or outpatient encounters, and we performed stratified cluster sampling to create weighted national estimates. The primary outcome was the proportion of AUS procedures performed in the inpatient and outpatient settings over time. We performed multivariable logistic regression to evaluate factors associated with an inpatient encounter. Results There were 21,916 weighted AUS procedures analyzed from 2016 to 2019 (6% inpatient vs. 94% outpatient). There was a 15% increase in total number of annual surgeries (n=5066 to n=5843), and the proportion performed outpatient increased from 92% to 95% over the study period [Figure]. Mean total charge for inpatient AUS surgery was $92,045 vs. $72,887 for outpatient (p<0.05). Inpatient AUS surgery was associated with greater Elixhauser Comorbidity Index, non-private insurance, and Western hospital region (vs. Northeast) (p<0.05) [Table]. Predictors of outpatient AUS procedures included older age, 3rd quartile of median income by Zip Code (vs. 1st quartile), and Midwest/Southern hospital region (vs. Northeast) (p<0.05). Conclusions With an increasing rate of AUS procedures in the United States, the majority of these procedures continue to be performed on an outpatient basis. Outpatient procedures have lower hospital charges compared to inpatient encounters, and outpatient AUS is associated with private insurance in older patients with fewer comorbidities. Hospital geographic region appears to affect encounter type, and further work may elucidate how these factors affect patient outcomes nationally. Disclosure No.

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