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    Comparison of Retrograde Intrarenal Surgery and Micro-Percutaneous Nephrolithotomy in Moderately Sized Pediatric Kidney Stones
    (Mary Ann Liebert, Inc, 2016) Bas, Okan; Dede, Onur; Aydogmus, Yasin; Utangac, Mazhar; Yikilmaz, Taha Numan; Damar, Erman; Nalbant, Ismail
    Purpose: To compare the effectiveness and reliability of retrograde intrarenal surgery (RIRS) and micropercutaneous nephrolithotomy (micro-perc) for the management of kidney stones in pediatric patients. Materials and Methods: A retrospective analysis was made of pediatric patients aged < 18 years with kidney stones that ranged from 10 to 20mm in size, who underwent RIRS (n = 36) or micro-perc (n = 45) in referral centers. Results: In the RIRS group, the mean age of patients was 8.39 -4.72 years and in the micro-perc group, it was 5.62 -4.50 years (p = 0.01). The mean stone size was 12.80 -3.03mm in the RIRS group and 13.97 -3.46mm in the micro-perc group (p = 0.189). The success rate was 86.2% (n = 31) in the RIRS group and 80.0% (n = 36) in the micro-perc group (p = 0.47). The mean complication rate was 16.6% and 13.3% in the RIRS and microperc groups, respectively (p = 0.675). Hospital stay and radiation exposure were significantly lower in the RIRS group (all p < 0.001). The mean anesthesia session was 1.94 in the RIRS group and 1.26 in the micro-perc group (p < 0.001). The mean hemoglobin drop was 0.53 -0.87 g/dL in the micro-perc group, and none of the cases required blood transfusion. Conclusion: The results of this study suggested that micro-perc and RIRS were highly effective methods for the treatment of moderately sized renal stones in children, with comparable success and complication rates. Patients and their parents should be informed about the currently available treatment options, and of their efficacy and safety. However, further clinical trials are needed to support these results.
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    The Effect of Metabolic Syndrome on the Success and Complications of Percutaneous Nephrolitotomy
    (Mary Ann Liebert, Inc, 2015) Nalbant, Ismail; Dede, Onur; Sener, Nevzat Can; Ozturk, Ufuk; Yesil, Suleyman; Karakoyunlu, A. Nihat; Imamoglu, M. Abdurrahim
    Background: The aim of this study was to investigate the effect of Metabolic syndrome (MetS) on the success and complications of percutaneous nephrolithotomy (PNL). Methods: Two hundred ten patients who had undergone PNL for kidney stones in our clinic between May 2012 and May 2014 were retrospectively analyzed. The patients were divided into two groups based on whether they had diagnostic criteria for MetS. All patients had lower pole kidney stones between 15 and 20mm. Complication rates between groups were evaluated using a modified Clavien grading system. Results: Group1 was a standard PNL group and group 2 consisted of patients with MetS. Mean stone size was 293.25102.4mm(2) for group 1 and 301.10 +/- 169.5mm(2) for group 2 (p<0.05). Mean hospitalization days, fluoroscopy duration, and mean hematocrit loss were significantly higher in group 2. Mean operative time and need for blood transfusions were higher in group 2 but statistically insignificant. One hundred twenty five patients in group 1 (96.1%) and 72 patients in group 2 (90%) obtained stone-free state. Conclusions: Our study results reveal an increase in complications and morbidity for patients with MetS during PNL.