Özet:

Background: Percutaneous nephrolithotomy (PCNL) is a minimally invasive surgical procedure recommended to remove kidney stones larger than 2 cm. Miniaturized nephroscopes developed over the years to treat pediatric kidney stones have been increasingly used in surgeries referred to as mini PCNL (mPCNL). This study will evaluate the success rates and results of mPCNL operations performed on adult patients. Materials and Methods: The study will examine mPCNL (20-24f) performed in the prone position on adults over 18 years old with kidney stones between January 2018 and June 2020. Further, the pre-operative (pre-op) and post-operative (post-op) features of 42 patients were retrospectively evaluated. The patients’ features, including post-op stone-free status and complications, were determined and included in the research. Results: The mean age of the patients was 33.64 ± 6.8 years, and 18 (42.8%) of them had at least grade 1 hydronephrosis. The average stone size was 300 ± 26 mm². Three (7.1%) patients had a "staghorn" type stone. The mean operation time was 52 ± 18 minutes and post-op stone-free rate was present in 33 (78.5%) patients. Additionally, post-op blood transfusions were provided to three (7.1%) patients. Tubeless PCNL was not applied to any patients. After the removal of the nephrostomy tubes, double-J stents were placed in four (9.5%) patients for drainage and in another due to postoperative pyelonephritis. The average length of time a nephrostomy tube was used on patients was 2.5 ± 0.6 days. Conclusions: mPCNL should be one of the first options for resolving ureteral obstructions in adult patients with a high risk of bleeding or co-morbidities from the operation. Thus, it is a more reliable option that can be used to reduce the risk of complications. Key Words: PCNL, Mini PCNL, Kidney Stones, Complications

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