MP22-07 SPONTANEOUS PASSAGE OF URETERAL STONES FOLLOWING STENT PLACEMENT

Abstract

You have accessJournal of UrologyStone Disease: Surgical Therapy I1 Apr 2016MP22-07 SPONTANEOUS PASSAGE OF URETERAL STONES FOLLOWING STENT PLACEMENT Lee Baumgarten, Anuj Desai, Michel Pontari, Daniel Eun, Jack Mydlo, and Adam Reese Lee BaumgartenLee Baumgarten More articles by this author , Anuj DesaiAnuj Desai More articles by this author , Michel PontariMichel Pontari More articles by this author , Daniel EunDaniel Eun More articles by this author , Jack MydloJack Mydlo More articles by this author , and Adam ReeseAdam Reese More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2016.02.695AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Ureteral stents are frequently placed for the initial management of urolithiasis. After stent placement, ureteroscopy is often performed at a later date for definitive stone management. Stones may pass spontaneously after ureteral stent placement, in which case ureteroscopy could be avoided. We aimed to characterize the rate of spontaneous stone passage after ureteral stent placement and to identify factors associated with stone passage after stent placement. METHODS We performed a retrospective review of all ureteroscopic procedures performed for urolithiasis at Temple University Hospital between January 1, 2013 and March 1, 2015. Patients in whom the stone was not visualized at ureteroscopy were deemed to have passed the stone spontaneously. We compared rates of spontaneous stone passage between patients who had previously undergone stent placement vs. those who had not. In patients who were previously stented, univariate and multivariate logistic regression analyses were used to identify factors associated with spontaneous stone passage. RESULTS 220 patients met study inclusion criteria. The rate of spontaneous stone passage was similar between stented and non-stented patients (14.3% vs. 20.0%, p=0.30). The table shows univariate analysis of factors associated with spontaneous stone passage in stented patients. Smaller stone size (p<0.01) and distal stone location (p=0.01) were significantly associated with stone passage. In multivariate logistic regression analysis, small stone size was significantly associated with stone passage (p=0.01) in stented patient, whereas stent duration, stone location, and stone laterality were not. CONCLUSIONS A significant percentage of patients spontaneously pass ureteral stones after stent placement. In stented patients, smaller stones are more likely to pass spontaneously. These findings may help to identify patients who can potentially avoid additional surgical procedures for definitive stone removal. © 2016FiguresReferencesRelatedDetails Volume 195Issue 4SApril 2016Page: e255-e256 Advertisement Copyright & Permissions© 2016MetricsAuthor Information Lee Baumgarten More articles by this author Anuj Desai More articles by this author Michel Pontari More articles by this author Daniel Eun More articles by this author Jack Mydlo More articles by this author Adam Reese More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...