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    Factors affecting complication rates of percutaneous nephrolithotomy in children results of a multi institutional retrospective analysis by the Turkish pediatric ürology society
    (The Journal of Urology, 2014) Önal, Bülent; Doğan, Hasan Serkan; Satar, Nihat; Bilen, Cenk Yücel; Güneş, Ali; Özden, Ender; Öztürk, Ahmet; Demirci, Deniz; İstanbulluoğlu, Mustafa Okan; Gürocak, Özdemir Serhat; Nazlı, Oktay; Tanrıverdi, Orhan; Kefi, Aykut; Korgalı, Esad; İnci, Kubilay; İzol, Volkan; Altıntaş, Ramazan
    We assessed factors affecting complication rates of percutaneous nephrolithotomy in children. Materials and Methods We retrospectively evaluated data on 1,205 renal units in 1,157 children treated with percutaneous nephrolithotomy at 16 Turkish centers between 1991 and 2012. Of the patients 28.3% had a history of urolithiasis. Complications were evaluated according to the Satava classification system and modified Clavien grading system. Univariate and multivariate analyses were done to determine predictive factors affecting complication rates. Results A total of 515 females and 642 males were studied. Mean ± SD patient age was 8.8 ± 4.7 years (range 4 months to 17 years). Mean ± SD stone size, operative time and postoperative hospital stay were 4.09 ± 4.06 cm2, 93.5 ± 48.6 minutes and 5.1 ± 3.3 days, respectively. Postoperative stone-free rate was 81.6%. A total of 359 complications occurred in 334 renal units (27.7%). Complications were intraoperative in 118 cases and postoperative in 241. While univariate analysis revealed that stone history, positive urine culture, operative time, length of hospitalization, treatment success, punctured calyx and location of the stone significantly affected the complication rates (p <0.05), operative time, sheath size, mid calyceal puncture and partial staghorn formation were the statistically significant parameters affecting complication rates on multivariate logistic regression analysis. Conclusions Percutaneous nephrolithotomy is the treatment of choice for most renal calculi in children. The technique is effective and safe in children, with a high success rate and a low rate of major complications. The significant factors identified should be considered by clinicians to decrease associated complication rates.