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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.
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    Öğe
    Factors affecting complication rates of retrograde flexible ureterorenoscopy: analysis of 1571 procedures-a single-center experience
    (Springer, 2017) Bas, Okan; Tuygun, Can; Dede, Onur; Sari, Sercan; Cakici, Mehmet Caglar; Ozturk, Ufuk; Goktug, Goksel
    To evaluate the factors affecting complication rates of flexible ureteroscopy and laser lithotripsy (FURSL). Data on a total of 1395 patients, with 1411 renal units underwent 1571 procedures with FURSL for renal and/or proximal ureteral stones between April 2012 and January 2016, were retrospectively analyzed. Complications were assessed using the Satava and modified Clavien systems. Univariate and multivariate analyses were done to determine predictive factors affecting complication rates. The mean patient age in the total procedures was 45.68 +/- 14.00 years (range 2-86 years), and the mean stone size was 15.15 +/- 8.32 mm (range 5-75 mm). The overall success rate was 95.6 %. A total of 209 (13.3 %) cases suffered from complications with intraoperative complications rates of 5.9 % and postoperative complication rates of 7.3 %. Univariate analysis revealed no significant difference in complication rates in respect of age, gender, body mass index, use of ureteral access sheath, operation time, bleeding disorder, solitary kidney, preoperative stenting, American Society of Anesthesiologists score, repeated procedure or location of stones (all p value > 0.05). Complication rates were determined to be significantly affected by stone size (p = 0.026), multiplicity (p = 0.028) and the presence of congenital renal abnormality (p < 0.01). The only significant factor in multivariate analysis was the presence of congenital renal abnormalities (p = 0.02). The results of the current study indicated that stone size, stone number and the presence of congenital renal abnormalities were factors affecting complication rates after FURSL, although congenital renal abnormality was the only independent predictor among these risk factors.