Abstract
Aim: We aimed to evaluate the predictive factors that would in turn indicate stone migration and the effects of these factors on the ultimate success of the intervention. Method: Patients were divided into two groups with respect to the migration of the stone treated. Group I: patients demonstrating stone migration during manipulation; group II: no migration of the stones noted. In the second phase of the study, the results of ureteroscopic management in 433 patients were evaluated with respect to the success rates obtained. Parameters such as stone size, stone burden, experience of the surgeon, length of the ureter proximal to the stone treated, and lastly transverse diameter of the ureter were noted in all patients as possible risk factors for stone migration. Results: Statistical analysis of ureteroscopic success in all patients revealed that there was a meaningful correlation with respect to the length of the proximal ureteral portion (p < 0.0001) and surgeon’s experience (p = 0.004). p value for the correlation between stone burden and operative success was 0.056. There was no significant correlation between stone size (p = 0.51), ureter diameter (p = 0.78), and operative success. Conclusion: Stones that are close to the renal pelvis and treated by inexperienced physicians are the ones most likely to migrate to the renal pelvis during manipulation with pneumatic lithotripsy.
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