91 Comparison of extracorporeal shock wave lithotripsy versus ureteroscopy holmium laser lithotripsy in the management of ureteral stones: A cost-effectiveness analysis

laterality, rate of positive urine cultures or stone size. Total score > 1.7 was marginally correlated with recurrent status (78% vs. 25%, p1⁄40.071) and BD score > 0.6 approached significance (55% vs. 0%, p1⁄40.057). RP score > 1.1 was not associated with recurrent status (p1⁄40.85). CONCLUSIONS: This standardized grading system suggests Bellini duct plugging on ureteroscopy may be associated with recurrent stones. Future studies with larger numbers of patients will help further determine the utility of this grading system.