Percutaneous nephrolithotomy in modified supine position

Overview

Aim: To present our department‘s experience with percutaneous nephrolithotomy in a modified supine position. Materials and Methods: During the observed period from January 1, 2020, to May 31, 2023, 93 percutaneous nephrolithotomies were performed in a modified supine position on 80 patients. A retrospective data analysis was conducted. The factors studied included stone size, Guy‘s stone score, operative time, stone‑free rate, complica tions, fluoroscopy time, use of lithotripsy, and the need for blood transfusion after the procedure. Result: The average size of the treated stone was 261 mm². In 31 cases, we dealt with multiple stones, partially cast stones (Guy‘s stone score 3) in 17 cases, and completely cast stones in 4 cases (Guy‘s stone score 4). The stone‑free rate in our cohort was 78%. Lithotripsy of the stone was nec essary in 59 cases (63%). Complications of grade II according to the Clavien‑Dindo classification were recorded in 2 cases (2%), grade IIIa in 1 case (1%), and grade IIIb in 8 cases (9%). The average operative time was 44 minutes, and the average f luoroscopy time was 2 minutes and 33 seconds. Blood transfusion after the procedure was required in 2 cases (2%). Conclusion: Percutaneous nephrolithotomy in a modified supine position is a safe and effective method for treating nephrolithiasis, with the advan tage of reduced operative time due to the station ary position of the patient during the procedure.

Keywords:

Modified supine position, nephrolithiasis, percutaneous nephrolithotomy.