Person: KAYALI, YUNUS
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Publication 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 Open Access Publication rates of full-text journal articles converted from abstracts presented during the 22nd Turkish national urology congress(2016-03-01) KOCAASLAN, Ramazan; KAYALI, YUNUS; TOK, Adem; TEPELER, Abdulkadir; KAYALI, YUNUSObjective: To analyze the publication rates of full-text journal articles converted from the abstracts presented in the 22(nd) Turkish National Urology Congress in 2012. Material and methods: A total of 576 abstracts accepted for presentation at the 22(nd) Turkish National Urology Association Meeting were identified from the published abstract book. The abstracts were categorized into subsections such as endourology and pediatric urology. The subsequent publication rate for the studies was evaluated by scanning PubMed Medline. Abstracts published before the proceedings were excluded from the study. Results: The abstracts were categorized as being presented orally (n=155), by poster (n=421), or by video (n=78). Of the 28 (18.3%) of 155 oral and 34 (8.15%) of 421 poster presentations, were subsequently published in several journals until March 2015. The publication rates of the abstracts based on urology subsections were as follows: neurology (25%), andrology (18.6%), endourology (17.2%), urolithiasis (15.3%), general urology (12.5%), infectious diseases (7.14%), pediatric urology (6.25%), uro-gynecology (6.06%), reconstructive urology (5.8%), and urooncology (3.8%). The average time to publication was 11.77 (0-33) months. Conclusion: This is the first study assessing the publication rates of abstracts presented at a Turkish National Urology Congress. It reveals that more qualified randomized studies need to be done to improve the rate of publication.Publication Metadata only Ateşli silah yaralanması sonrası rekonstrikte peniste gelişen distal üretral striktürün fibrotik çevre doku ile eksizyonu ( Rekonstrikte penis, parsiyel penektomisi)(2019-10-13T00:00:00Z) GÜRBÜZ, RECAİ; ŞALVARCI, AHMET; KAYALI, YUNUS; AKÇAY, MUZAFFER; AKBULUT, HABİB; DOĞAN, BAYRAM; Gevher, Fatih; İlktaç, Abdullah; KAYALI, YUNUS; AKÇAY, MUZAFFER; AKBULUT, HABİB; DOĞAN, BAYRAMPublication Metadata only Mesane taşına bağlı penoskrotal lokalizasyonlu fatal nekrotizan fasiitis (Fournier gangreni)(2019-10-13T00:00:00Z) ŞALVARCI, AHMET; GÜRBÜZ, RECAİ; KAYALI, YUNUS; AKÇAY, MUZAFFER; AKBULUT, HABİB; DOĞAN, BAYRAM; Gevher, Fatih; İlktaç, Abdullah; KAYALI, YUNUS; AKÇAY, MUZAFFER; AKBULUT, HABİB; DOĞAN, BAYRAMPublication Metadata only External Validation and Evaluation of Reliability and Validity of the Triple D Score to Predict Stone-Free Status After Extracorporeal Shockwave Lithotripsy.(2017-02-01T00:00:00Z) Ozgor, F; Tosun, M; Kayali, Y; Savun, M; Binbay, M; Tepeler, A; KAYALI, YUNUS