Previous Open Stone Surgery: Is It a Risk Factor for Bleeding in Percutaneous Nephrolithotomy

Objective: The aim of this study is to determine whether previous open stone surgery is a risk factor for bleeding in patients undergoing percutaneous nephrolithotomy (PNL). Materials and Methods: Data of patients who underwent PNL in our clinic between 2007 and 2015 were reviewed retrospectively. Eighty-two patients underwent PNL and had a history of previous ipsilateral open surgery. A control group was created with 82 patients randomly selected among PNL patients with no history of open surgery. The groups were evaluated in terms of preoperative demographic data, operative success and complications, especially hemorrhage requiring transfusion. Results: The groups were similar in terms of demographic data and stone burden. One patient of each group was administered intraoperative blood transfusion. There was no statistically significant difference between the two groups in terms of postoperative blood transfusion (p=0.245). Conclusion: In our study, it can be said that previous open stone surgery does not increase potential complication of bleeding in PNL.