The effect of ureterorenoscopy and retrograde intrarenal surgery procedures on renovascular hemodynamics

Abstract

Aim: The aim of this prospective clinical study was to evaluate the preoperative and postoperative intrarenal vascular parameters of the kidneys undergoing URS and RIRS operations and compare the outcomes with the results of the normal contralateral kidneys. Materials and Methods: A total of 89 patients were included in the study. There were 42 and 47 patients in RIRS and URS groups respectively. The ureteral tract with stone formation was named as operated side, and the contralateral side was named as non-operated side. Preoperative gray-scale and CDUS measurements were obtained 24 h before and 8 h after the operations. The RI measurements were calculated from the upper pole, middle area, and the lower pole of the kidney and averaged. Results: There was no statistically significant difference in the demographic and peroperative features between the two groups except for irrigation fluid volume. Preoperative mean RI values were higher than the contralateral non-operated side kidney but not statistically significant (p=0,346). The.RI values were higher on the operated side in RIRS group compared with URS according to the selected surgery method (p=0,041). Discussion: Endoscopic stone surgery procedures increase renal vascular resistance by increasing intrarenal pressure. Therefore, we recommend reducing the use of irrigation fluids as much as possible during surgical applications.