EVALUATION STUDIES
JOURNAL ARTICLE
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Ultrasound-guided mini-percutaneous nephrolithotomy in patients aged less than 3 years: the largest reported single-center experience in China.

Urolithiasis 2016 April
UNLABELLED: To investigate the efficacy and safety of mini-percutaneous nephrolithotomy (mini-PCNL) under total ultrasonography in patients aged <3 years.

METHODS: We reviewed 56 patients (67 renal units) aged <3 years between August 2006 and December 2012 in our units, including 31 renal units with a single stone, 6 with staghorn stones, 10 with upper ureteral stones, and 20 with multiple stones. The mean age of the patients was 24 (range 6-36) months and the mean maximum stone diameter was 18.9 (range 10-32) mm. The puncture site selection and tract dilation were guided by Doppler ultrasonography solely. All procedures were performed using 12-16 Fr tracts. Stones were fragmented using pneumatic lithotripsy and a holmium laser with an 8/9.8 Fr rigid ureteroscope. Forty-five patients with unilateral stones underwent a single procedure, and 11 patients with bilateral stones underwent two procedures. The mean time to establish access was 2.9 (range 2.1-5) min, the mean operative time was 36.8 (range 20-88) min, the mean decrease in hemoglobin concentration was 8.7 (2-15) g/L, and the stone-free rate at hospital discharge was 92.5%. The mean postoperative hospital stay was 7.1 (range 3-13) days. Post-procedure complications included fever (>38.5 °C) in four patients, and reactive pleural effusion in one patient. Blood loss requiring transfusion, sepsis, adjacent organ injury, and kidney loss were not observed. Ultrasound-guided mini-PCNL is feasible and safe in patients aged <3 years, without major complications or radiation exposure.

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