• Berat Cem Ozgur, Musa Ekici, Mehmet Murat Baykam, and Emre Demir.
• Department of Urology, University of Health Sciences, Ankara Research and Training Hospital, Ankara, Turkey.
• J Coll Physicians Surg Pak. 2020 May 1; 30 (5): 508-511.

ObjectiveTo determine the outcomes of retrograde ıntrarenal surgery (RIRS) and its complications in  both young and elderly patients.Study DesignAn observational study.Place And Duration Of StudyDepartments of Urology, University of Health Sciences, Ankara Research and Training Hospital, Ankara, and Çorum Hitit University, Çorum, Turkey from April 2019 to January 2020.MethodologyPatients with kidney stones up to 3 cm in maximal diameter on computarised tomography (CT) scan, were divided into two groups according to age (<60 vs. ≥60 years ). RIRS was performed. Demographics, clinical data, and complications were recorded and compared.ResultsMean age of 78 patients was 52.47 ±13.28 years. There were no significant difference in gender, American Society of Anesthesiology (ASA) scores, operation time, number of multiple sessions, success rates of outcome and complication rates between groups. At the end of the first session, stone-free rates were 91.1% vs 87.9% in younger and elderly groups, respectively; while, after the second session, all patients were stone-free in both groups. Fever, hematuria (macroscopic, more than 24 hours), and perirenal hematoma were the observed complications. Postoperative hematocrit levels significantly decreased without any need of transfusion; there were significant differences in the preoperative and postoperative creatinine levels ( p=0.002) in the older group.ConclusionRIRS is a safe and effective method for treating kidney stones up to 3 centimeter diameter in all age groups. Although hemorrhagic events are mostly clinically unremarkable, there is a risk of renal function impairment in older (≥60 years) patients. Preoperative hydration and postoperative close follow-up is important. Key Words: Retrograde ıntrarenal surgery, Elderly, Effectiveness, Safety.

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