Success rate and complications of flexible ureterorenoscopy and laser lithotripsy in patients with urinary stones: a multicenter study

Abstract

Introduction: flexible ureterorenoscopy combined with laser lithotripsy is a minimally invasive technique of choice for treating urinary stones. This study analyzed its success rate and complications in patients with urinary tract stones. Methods: this descriptive, prospective, and cross-sectional study was conducted in two institutions: Centro Médico Docente La Trinidad (CMDT) and Hospital Militar Universitario Dr. Carlos Arvelo (HMUCA). It included 25 patients diagnosed between May and July 2024, with 17 from CMDT and 8 from HMUCA. Results: the average age was 53.32 ± 13.68 years, with a male predominance (52%). The most frequent diagnosis was left kidney stones (32%), and 60% of patients had no comorbidities. The most affected renal unit was unilateral (72%). Average stone radiodensity levels were 1287.74 HU at CMDT and 1324.50 HU at HMUCA. Average surgical time was 84.56 ± 16.27 minutes at CMDT and 96.44 ± 39.00 minutes at HMUCA. Complications were observed in 24% of cases (6 patients). Conclusions: the study concludes that laser ureterorenoscopy is a safe and effective therapeutic option for high-density stones, challenging traditional recommendations and broadening the indications for this technique.