Özet:

Objective: We investigated the relationship between clinical data of patients who underwent ureterorenoscopy (URS) due to ureteral stone and stone free rates retro­spectively. Methods: Clinical data of 83 patients who underwent URS in our clinic were retrospectively analyzed. Pre­operative and intraoperative clinical parameters were recorded. Success was defined as not to detect > 4mm stone fragments 2 weeks after the operation. Appropriate statistical analysis were done for evaluating relationship between stone free rate and clinical data. Results: Mean age was 50.48±14.41 and male to female ratio was 2. Overall stone free rate was 83.2%. Postop­erative fever, ureteral perforation were detected in 7 and 2 patients, respectively. There were no differences between success and failure groups in terms of age, sex, opera­tion side, stone number, diameter, size, surface area, mean Hounsfield unit, usage of balloon dilatation. How­ever with respect to preoperative grade of hydronephrosis (low grade: 95.2% vs high grade: 69.4%, p=0.006), stone location (distal ureter: 92.9% vs proximal ureter: 72.5%, p=0.014) and operation time (success: 60.0 (45.0-60.0) min. vs failure: 85.0 (60.0-97.5) min. p=0.048) we found statistically significant differences between the study groups. In addition stone free rate was 91.7% with anti-retropulsion device Stone cone, whereas it was 81.4% without any ureteral occlusion (p=0.347). Conclusion: We assume that anti-retropulsion devices or flexible URS should be prefered especially in patients with hydronephrotic proximal ureteral stone for higher stone free rate with lower auxiliary procedure.

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