Objectives: Knowing the treatment's time of a complex stone is important for operating programming. It depends on the installation time, renal access time and the rate of fragmentation. The main objective of the study is to calculate the processing speed of complex stones by the percutaneous mini-nephrolithotomy (mini-NLPC) technique.
Population And Methods: A prospective single-center study was carried out between November 2019 and October 2020. Patients treated with mini-NLPC and with a result without fragment were included. The stone volume was measured using 3D reconstruction software and the operating time was differentiated into installation time, renal access time and fragmentation time.
Results: Of the 36 patients treated by the percutaneous technique, 20 patients were included. The median 3D volume of the stones was 4145 mm (2211-6998). The median duration of the intervention time was 104.5min (80-125). The fragmentation speed was 48.2 mmmin (30.2-62.5) taking into account the total duration of the intervention and 110.4 mmmin (85.3-126.5) in taking into account only the duration of fragmentation.
Conclusion: The fragmentation speed for complex stones was 48.2 mmmin (30.2-62.5) taking into account all the different operating times. It would be interesting to compare these results with that of ureteroscopy with the same methodology.
Level Of Proof: C.
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