Browsing by Author "Sener, Nevzat Can"

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    Asymptomatic Lower Pole Small Renal Stones: Shock Wave Lithotripsy, Flexible Ureteroscopy, or Observation? A Prospective Randomized Trial
    (2015) Sener, Nevzat Can; Bas, Okan; Sener, Emine; Zengin, Kursad; Ozturk, Ufuk; Altunkol, Adem; Evliyaoglu, Yalcin; 25440816; HKN-9151-2023
    OBJECTIVE To present the outcomes of flexible ureteroscopy (F-URS), shock wave lithotripsy (SWL), and observation in the management of asymptomatic lower calyceal stones. METHODS A total of 150 patients with asymptomatic lower calyceal stones were randomized into F-URS (group 1), SWL (group 2), and observation (group 3) groups. The main criteria for patient enrollment were having asymptomatic single lower pole stones <1 cm. RESULTS In F-URS, the mean stone-free rate was 92% (46 of 50). The mean number of sessions for the SWL group was 1.48 +/- 0.65. Stone-free rate was 90% (45 of 50). In the observation group, patients were followed up for a mean of 21.02 +/- 3.65 months. Three stones passed spontaneously without any symptoms. Pain developed in 3 patients during follow-up, and 2 of them passed a stone and responded to analgesics without further treatment. Complication rates for groups 1 and 2 were similar, but group 2 had higher Clavien grades. CONCLUSION For asymptomatic small-sized lower calyceal stones, SWL and F-URS are established treatment modalities. However, with low auxiliary treatment rates, observation may be an option for the management of nonsymptomatic small-sized lower pole kidney stones. (C) 2015 Elsevier Inc.
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    Comparison of Ho:Yag laser and pneumatic lithotripsy combined with transurethral prostatectomy in high burden bladder stones with benign prostatic hyperplasia
    (2016) Goren, Mehemet Resit; Ercil, Hakan; Altunkol, Adem; Alma, Ergun; Sener, Nevzat Can; Kuyucu, Faruk; Karakoyunlu, Ahmet Nihat; Vuruskan, Ediz; Ortoglu, Ferhat; Gurbuz, Zafer Gokhan; 0000-0002-2001-1386; 25937584; 2-s2.0-84928795122; Y-6143-2019
    Objectives: To compare the efficacy and reliability of Ho:YAG laser lithotripsy (FILL) and pneumatic lithotripsy (PL) in the treatment of bladder stones in patients with benign prostatic hyperplasia and stones >= 20 mm who were transurethrally treated in the same surgical session. Methods: We studied the data of patients with benign prostatic hyperplasia and >= 20 mm bladder stones who were treated with transurethral resection of the prostate and cystolithotripsy in the same session, obtained between January 2010 and February 2014 from three urology clinics. All patients underwent bipolar plasmakinetic (PK) transurethral resection of the prostate. For treatment of the bladder stone, either HLL or PL was applied. A total of 62 patients were divided into two groups: PK-PL (Group 1, n = 29) and PK-HLL (Group 2, n = 33). The data of both groups were analyzed for stone dimensions, stone fragmentation time, total operating time, hospitalization duration, prostate dimensions, success rates, and complications. Results: Group 1 included 29 patients with a mean age of 70 +/- 7.6 (range, 57-85) years, whereas Group 2 included 33 patients with a mean age of 67.5 +/- 10.5 (range, 45-84) years. In Group 1, five patients had mucosa injury, one patient had residual stone, and one patient had bladder perforation. In Group 2, three patients had mucosa injury, three patients had postoperative fever, and one patient had residual stone. Total operation time and stone fragmentation time were significantly lower in Group 2(p < 0.05). The remaining analyzed data were similar (p > 0.05). Conclusion: PK-HLL using a single shaft without the need for repeated access has the advantages of shorter fragmentation and operatidn time. Copyright (C) 2015, Asian Surgical Association. Published by Elsevier Taiwan LLC. All rights reserved.
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    Treatment of Moderate Sized Renal Pelvis Calculi: Stone Clearance Time Comparison of Extracorporeal Shock Wave Lithotripsy and Retrograde Intrarenal Surgery
    (2016) Ercil, Hakan; Alma, Ergun; Bas, Okan; Sener, Nevzat Can; Vuruskan, Ediz; Kuyucu, Faruk; Unal, Umut; Goren, Mehmet Resit; Evliyaoglu, Yalcin; https://orcid.org/0000-0002-2001-1386; 26945652; Y-6143-2019
    Purpose: To compare the stone clearance times in patients undergoing extracorporeal shock wave lithotripsy (SWL) or retrograde intrarenal surgery (RIRS) for single radiopaque renal pelvis stones 10-20 mm in size. The results of this study may guide urologists and patients and aid in selecting the optimal preoperative treatment. Materials and Methods: Between January 2013 and February 2015, we conducted a retrospective study and collected data from 333 patients treated with SWL (n = 172) or RIRS (n = 161). We included successfully treated patients with a single radiopaque renal pelvis stone 10-20 mm in size to calculate stone clearance times. Results: The average stone size for the SWL group was 14.62 +/- 2.58 mm and 14.91 +/- 2.92 mm for the RIRS group. The mean Hounsfield unit (HU) of the patients was 585.40 +/- 158.39 HU in the SWL group and 567.74 +/- 186.85 HU in the RIRS group. Following full fragmentation, the mean stone clearance time was 26.55 +/- 9.71 days in the SWL group and 11.59 +/- 7.01 days in the RIRS group (P <.001). Conclusion: One of the most overlooked parameters in urinary stone treatments is stone clearance. We believe this study will shed light for those who aim to conduct larger randomized prospective studies.