Person: KALKAN, SENAD
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Publication Metadata only Long term results of augmentation cystoplasty and urinary diversion in multiple sclerosis(2019-06-01T00:00:00Z) KALKAN, Senad; Jaffe, William I.; Simma-Chiang, Vannita; Li, Eric S. W.; Blaivas, Jerry G.; KALKAN, SENADIntroduction: There is a paucity of data about augmentation cystoplasty (AC) in multiple sclerosis (MS) patients with refractory lower urinary tract symptoms (LUTS). The aim of this study is to evaluate the long term outcomes and morbidity of these procedures in MS patients.Publication Metadata only Mesh related vesıcoperitoneal fistula presenting with urinary ascites. A case report.(2018-11-01) İLKTAÇ, ABDULLAH; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, SENAD; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, SENADPublication Metadata only Gunshot injury to the penis in a patient with penile prosthesis: a case report.(2011-09-01T00:00:00Z) ÖZTÜRK, MI; Ilktaç, ABDULLAH; KOCA, O; KALKAN, SENAD; KAYA, C; KARAMAN, MI; İLKTAÇ, ABDULLAH; KALKAN, SENADPublication Open Access Mesh related vesico-peritoneal fistula presenting with urinary ascites: A case report(2019-03-01T00:00:00Z) İLKTAÇ, ABDULLAH; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, Senad; İLKTAÇ, ABDULLAH; ERSÖZ, CEVPER; DOĞAN, BAYRAM; KALKAN, SENADVesicoperitoneal fistula is a very rare entity of epithelialized communication between peritoneal cavity and bladder.1 It results in accumulation of urine in peritoneal cavity and causes elevated urea and creatinine levels mimicking acute renal failure. Incisional hernia is common complication of abdominal surgery and often repaired with non-absorbable mesh.2 Using dual mesh can reduce mesh related complications but migration to adjacent organs can still happen and cause severe complications. Here we present a case of mesh related vesico-peritoneal fistula presenting with urinary ascites 2 years after incisional hernia repair.Publication Metadata only MESH SLING COMPLICATIONS: FEASIBILITY OF ACCESSING DATA FROM PATIENTS INVOLVED IN MESH LITIGATION(2019-04-01T00:00:00Z) Blaivas, Jerry G.; Chughtai, Bilal; Li, Eric S. W.; Kalkan, Senad; Dayan, Linda; Prishtina, Learta; Mathew, Joel; KALKAN, SENADPublication Metadata only AUTOLOGOUS RECTUS FASCIAL PUBOVAGINAL SLING AFTER VAGINOPLASTY: AN OLD TRICK FOR A NEW PROBLEM(2019-04-01T00:00:00Z) Purohit, Rajveer; Blaivas, Jerry G.; Kalkan, Senad; KALKAN, SENADPublication Open Access Comparison of Scoring Systems in Predicting Success of Percutaneous Nephrolithotomy(2019-01-01T00:00:00Z) AKÇAY, MUZAFFER; Tosun, Muhammed; GEVHER, FATİH; KALKAN, Senad; ERSÖZ, CEVPER; Kayali, Yunus; Tepeler, Abdulkadir; AKÇAY, MUZAFFER; TOSUN, MUHAMMED; GEVHER, FATİH; KALKAN, SENAD; ERSÖZ, CEVPER; KAYALI, YUNUSBackground: Scoring systems are useful to inform the patients about the success and complication rates of the operation prior the surgery. Aims: To determine the applicability of the popular scoring systems (Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density and Clinical Research Office of the Endourological Society) by means of examining preoperative data of patients treated with percutaneous nephrolithotomy. Study Design: Cross sectional study. Methods: We retrospectively reviewed files of the patients who had undergone percutaneous nephrolithotomy in our center between 2011 and 2015. Excluded from the study were patients aged <18 years, and those who were not assessed preoperatively with computed tomography. Preoperative computed tomography images of all patients were assessed by a single observer, and patients were graded based on three scoring system. Demographic data were analyzed along with perioperative data (operation, fluoroscopy, length of hospital stay, changes in hematocrit values, location, and number of access sites, stone-free and complication rates). Results: A total of 298 patients who had been treated with 300 procedures were enrolled into the study. Mean age, stone burden, number of stones, and density were 48.1±12.9 years, 663.5±442.8 mm2, 1.8±1.1 and 888.3±273 HU respectively. Scores of the cases based on Guy’s, stone size, tract length, obstruction, number of involved calices, and essence/stone density, and Clinical Research Office of the Endourological Society scoring system were calculated as 2, 7.6, and 222.1 points respectively. 81.6% of the patients were stonefree. Complications were detected in 30 (9.9%) patients. Based on receiver operating characteristic curve analysis a positive correlation was detected between success rate and scoring systems, i.e., Guy’s (p=<0.001, r=-0.309), stone size, tract length, obstruction, number of involved calices, and essence/stone density (p=<0.001, r=-0.295), and Clinical Research Office of the Endourological Society (p=<0.001, r=0.426). The Clinical Research Office of the Endourological Society scoring system had the highest predictive value. The sensitivity rates rates for Guy’s, Clinical Research Office of the Endourological Society and Stone scoring system were as 78.78%, 80% and 82.34% respectively. Conclusion: All of scoring systems predicted correctly the success of the percutaneous nephrolithotomy procedures. The Clinical Research Office of the Endourological Society scoring system had the highest predictive value. Keywords: Percutaneous nephrolitotomy, scoring methods, specificity and sensitivity, urinary calculiPublication Metadata only Penile fraktüre eşlik eden komplet üretra rüptürü(2017-10-14T00:00:00Z) Tosun, Muhammed; Ersöz, Cevper; İlktaç, Abdullah; Kalkan, Senad; Doğan, Bayram; Kayalı, Yunus; Hamidli , Seyidali; ERSÖZ, CEVPER; İLKTAÇ, ABDULLAH; KALKAN, SENAD; DOĞAN, BAYRAM; AKÇAY, MUZAFFERPublication Metadata only Comparison of intrarenal pelvic pressure during micro-percutaneous nephrolithotomy and conventional percutaneous nephrolithotomy(2014-06-01T00:00:00Z) TEPELER, Abdulkadir; AKMAN, Tolga; SILAY, Mesrur Selcuk; Akcay, MUZAFFER; Ersoz, CEVPER; Kalkan, SENAD; ARMAGAN, Abdullah; SARICA, Kemal; AKÇAY, MUZAFFER; ERSÖZ, CEVPER; KALKAN, SENADThe micro-percutaneous nephrolithotomy (microperc) is a recently introduced percutaneous nephrolithotomy (PNL) technique that is performed through a 4.8Fr all-seeing needle. We aimed to measure the intrarenal pelvic pressure (IPP) during microperc and compare it with the levels of conventional PNL. A total of 20 patients with 1- to 3-cm renal calculi resistant to shock wave lithotripsy were treated either with microperc (Group-1, n: 10) or conventional PNL (Group-2, n: 10) by the same surgical team. The IPP was measured during different stages (entrance into the collecting system, stone fragmentation, and before termination) of the procedures by an urodynamic machine using the 6Fr ureteral catheter. All the variables were statistically compared between the two groups. The demographic values of the patients were similar. The operation time and duration of hospitalization were significantly prolonged in conventional PNL group (p = 0.034, p = 0.01, respectively). The mean drop in hematocrit levels was significantly lower in microperc group (3.5 +/- A 1.5 vs. 1.8 +/- A 0.8; p = 0.004). The IPP was significantly higher in microperc group during all steps of the procedure. The highest level of the IPP was measured as 30.3 +/- A 3.9 and 20.1 +/- A 3.1 mmHg in Group 1 and Group 2, respectively (p < 0.0001). However, the complication and success rates were found comparable. In conclusion, we demonstrate that the level of IPP is significantly increased during microperc compared to conventional PNL. Microperc should be used cautiously in cases with impaired drainage of the collecting system.Publication Metadata only Surgery for Stress Urinary Incontinence Autologous Fascial Sling(2019-02-01T00:00:00Z) Blaivas, Jerry G.; Simma-Chiang, Vannita; Gul, Zeynep; Dayan, Linda; KALKAN, Senad; Daniel, Melissa; KALKAN, SENADThis article describes the operative technique of autologous fascial pubovaginal sling (AFPVS) surgery, examines the senior author-s outcomes with AFPVS, compares these outcomes with those of other large studies and meta-analyses, and compares the safety and efficacy of AFPVS with those of the synthetic midurethral sling (SMUS). Recently, the SMUS has become the treatment of choice for most surgeons. The efficacy of the SMUS remains unchallenged and comparable with that of AFPVS, but SMUS are associated with more severe complications. In the author-s opinion, the AFPVS should remain the gold standard for treating SUI.