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Öğe Attitudes of urologists on metabolic evaluation for urolithiasis: outcomes of a global survey from 57 countries(Springer, 2022) Karagoz, Mehmet Ali; Guven, Selcuk; Tefik, Tzevat; Gokce, Mehmet Ilker; Kiremit, Murat Can; Atar, Feyzi Arda; Ibis, Muhammed ArifAlthough stone disease is an important health problem with high incidence and recurrence rates, it is a preventable disease. Attitudes and practices of urologists regarding the prevention of recurrence continue to be a subject of debate. In this context, an online survey study was conducted involving 305 urologists from 57 different countries. The first 7 questions collected demographic data about the urologists and the remaining 23 questions were about the recurrence and metabolic evaluation, medical treatment, and follow-up of urinary stone disease. Most urologists (85.2%) thought that metabolic examination was important. Approximately one-third of the participants (34.1%) performed 24-hour urine analysis and stone analysis was ordered by 87.5% of the urologists. Metabolic analysis was performed for all patients by 14.7% of the participants. For pediatric patients this rate was 68.5%, and for adults with recurrence the rate was 81.6%. Reasons cited by the urologists for not performing metabolic analysis included not feeling confident doing so (18.3%), having limited facilities in their hospital (26.5%), having an excessive daily workload (31.8%), patient-related factors (27.5%), and referring patients to other departments for metabolic evaluation (20.9%). Although majority of the responding urologists do consider the metabolic analysis as vital important, they seemed not to be willing to perform these tests with the same degree of enthusiasm in their daily practice. Our results show that urologists need support in performing and interpreting 24-hour urine analysis, improving their knowledge levels, and communicating with patients. Urology residency training should focus more on the prevention of urinary stone recurrence in addition to the surgical training.Öğe Case-based review of dietary management of cystinuria(Springer, 2023) Ucmak, Harun; Sonmez, Mehmet Giray; Guven, SelcukPurpose The currently recommended treatment strategy for cystine stone formers is based on a progressive approach that starts with the most conservative measures. In patients with cystinuria, increased patient compliance with dietary management and medical treatment is associated with fewer stone interventions. In this case-based review, the dietary management of cystine stone former was reviewed under the guidance of evidence-based medicine. Methods The dietary management of the 13-year-old cystinuria patient, who underwent 18 endourological stone interventions, was reviewed in the light of evidence-based medicine. A literature search was performed in Pubmed, MEDLINE, Embase, and Cochrane Library databases according to PRISMA guidelines published from 1993 to September 2022. A total of 304 articles were included in this paper. Results In managing patients with cystinuria, hyperhydration, and alkalinization of the urine with medical treatment, the rational use of cystine-binding drugs by taking into account individual situations has come to the fore. A limited study has argued that a vegetarian diet is effective as the alkaline load from fruits and vegetables can reduce the amount of alkalizing substances required to achieve urinary alkalinization above pH 7.5, making it particularly suitable for the dietary treatment of cystine stone disease. Conclusion Life-long follow-up with dietary modification, hyperhydration, and personalized medical therapy (alkalinization and cystine-binding drugs) are critical in preventing chronic kidney disease and kidney failure in cystinuria.Öğe Comparison of absorbed irrigation fluid volumes during retrograde intrarenal surgery and percutaneous nephrolithotomy for the treatment of kidney stones larger than 2 cm(Springer International Publishing Ag, 2016) Guzelburc, Vahit; Balasar, Mehmet; Colakogullari, Mukaddes; Guven, Selcuk; Kandemir, Abdulkadir; Ozturk, Ahmet; Karaaslan, PelinPurpose: Irrigation-induced increase in intrarenal pressure is of concern because it may cause infection due to increased pyelovenous and pyelolymphatic absorption. This study is the first to compare prospectively the absorbed fluid volumes during percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) for stones larger than 2 cm. Materials and methods: General anesthesia was applied to all patients. Isotonic solution containing 1 % ethanol was used as irrigation fluid. Venous blood ethanol concentration was first measured with the start of irrigation and thereafter every 15 min until the patients left the recovery room. Absorbed fluid volumes were measured using the blood ethanol concentrations. Duration of irrigation, irrigated fluid volume, stone size and grade of hydronephrosis were also recorded. Results: A total of 60 patients were included the study. Fluid absorption occurred in all patients. Minimum and maximum ranges of fluid absorption were 20-573 mL for RIRS and 13-364 mL for PCNL. The increase in fluid absorbed volume was observed as a result of the given amount of irrigating fluid used in the PCNL group. Also prolongation of operation led to a significant increase in absorption in the PCNL group. Increase in body mass index, stone size, and hydronephrosis did not affect fluid absorption significantly in either of the two operation techniques in correlation analyzes. Conclusion: Both RIRS and PCNL are conducted under high pressure and can be accompanied potential complications such as SIRS. The fluid absorption confirmed in our study should be taken into consideration during RIRS and PCNL.Öğe Comparison of absorbed irrigation fluid volumes during retrograde intrarenal surgery and percutaneous nephrolithotomy for the treatment of kidney stones larger than 2 cm(Springer International Publishing Ag, 2016) Guzelburc, Vahit; Balasar, Mehmet; Colakogullari, Mukaddes; Guven, Selcuk; Kandemir, Abdulkadir; Ozturk, Ahmet; Karaaslan, PelinPurpose: Irrigation-induced increase in intrarenal pressure is of concern because it may cause infection due to increased pyelovenous and pyelolymphatic absorption. This study is the first to compare prospectively the absorbed fluid volumes during percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) for stones larger than 2 cm. Materials and methods: General anesthesia was applied to all patients. Isotonic solution containing 1 % ethanol was used as irrigation fluid. Venous blood ethanol concentration was first measured with the start of irrigation and thereafter every 15 min until the patients left the recovery room. Absorbed fluid volumes were measured using the blood ethanol concentrations. Duration of irrigation, irrigated fluid volume, stone size and grade of hydronephrosis were also recorded. Results: A total of 60 patients were included the study. Fluid absorption occurred in all patients. Minimum and maximum ranges of fluid absorption were 20-573 mL for RIRS and 13-364 mL for PCNL. The increase in fluid absorbed volume was observed as a result of the given amount of irrigating fluid used in the PCNL group. Also prolongation of operation led to a significant increase in absorption in the PCNL group. Increase in body mass index, stone size, and hydronephrosis did not affect fluid absorption significantly in either of the two operation techniques in correlation analyzes. Conclusion: Both RIRS and PCNL are conducted under high pressure and can be accompanied potential complications such as SIRS. The fluid absorption confirmed in our study should be taken into consideration during RIRS and PCNL.Öğe Comparison of Laparoscopic Vessel Sealing Devices in a Porcine Model: Turkurolap Group Study(Kuwait Medical Assoc, 2013) Arslan, Murat; Akin, Yigit; Ates, Mutlu; Gozen, Ali Serdar; Tunc, Lutfi; Guven, SelcukObjective: To compare the effectiveness of different electrosurgical devices used during laparoscopic surgery in Turkey Design: Retrospective study Setting: Gulhane Military Medical Academy, Experimental laboratory, Turkey Subject and Methods: Six large White-Landrace-Pietrain pigs, with a mean weight of 63 +/- 3.61 kg, were used in 2011. Interventions: Laparoscopic Vessel Sealing Devices Main Outcome Measures: Sealing time, demarcation, destruction, sticking, and burning effects of laparoscopic electrosurgical devices were investigated in blood vessels and ureters Results: Sealing process was significantly shorter with LigaSure Atlas (LS-10 mm and LS-5 mm), Plasma Trissector Gyrus (PTG) and Harmonic Scalpel (HS) in gonadal vessels. The shortest superficial demarcation was provided with HS. The sticking effects of the LS-5 mm and PTG were lower in ureters. The superficial demarcation was shorter with PTG than LS-5 mm, LS-10 mm and HS in ureters. Conclusions: HS stands out a bit more among devices with electrosurgical effects and fewer side effects to surrounding tissues than other devices in our study. Electrosurgical device should be selected according to necessity of the kind of dissection.Öğe Comparison of retrograde intrarenal stone surgery with and without a ureteral access sheath using kidney injury molecule-1 (KIM-1) levels: a prospective randomized study(Springer, 2022) Ecer, Gokhan; Sonmez, Mehmet Giray; Ayd, Arif; Topcu, Cemile; Alalam, Haider Nihad Izaddin; Guven, Selcuk; Balasar, MehmetThe objective is to compare patients who underwent retrograde intrarenal surgery with and without a ureteral access sheath (UAS) using kidney injury molecule-1 (KIM-1) levels. We also examined the difference in kidney damage between standard and dual lumen UAS. Sixty patients diagnosed with kidney stones and scheduled for RIRS were randomized into three groups: RIRS without UAS (Group 1), 11Fr/13Fr Boston scientific Navigator (TM) UAS (Group 2), and 11Fr/13Fr dual lumen ClearPetra (TM) UAS (Group 3). Data were prospectively collected in consecutive patients. Urine KIM-1/Cr levels were measured preoperatively, at postoperative 4 h, and on a postoperative day 14. Stone size, location, number, pre- and postoperative stent use, operation time, stone-free rate (SFR), post-ureteroscopic lesion scale (PULS) grade, hospitalization duration, and complications were recorded. There was no significant difference in demographical parameters and preoperative KIM-1/Cr levels among the groups. Postoperative 4th-hour urine KIM-1/Cr levels were higher in patients without UAS than patients with UAS (1.86, 0.67, 0.63 Groups 1, 2, 3, respectively). In comparing group 1 with groups 2 and 3 separately, Group 1 had a statistically significantly higher value than both groups (p = 0.002, p = 0.001, respectively). According to UAS type, there was no significant difference between groups 2 and 3. The use of UAS during RIRS has been shown to reduce kidney injury in the evaluation with KIM-1. Different UAS types on kidney injury and which one can protect the kidneys more during the procedure; will be elucidated by prospective randomized studies involving larger patient groups and UAS types.Öğe Contemporary Management of Medium-Sized (10-20mm) Renal Stones: A Retrospective Multicenter Observational Study(Mary Ann Liebert, Inc, 2015) Kiremit, Murat Can; Guven, Selcuk; Sarica, Kemal; Ozturk, Ahmet; Buldu, Ibrahim; Kafkasli, Alper; Balasar, MehmetPurpose: To evaluate contemporary management approaches to medium-sized (10-20mm) renal stones. Patients and Methods: A total of 935 patients treated for medium-sized renal stones (10-20mm) between July 2012 and March 2014 were included in the study program. Contemporary minimally invasive approaches applied in the management of such stones were evaluated and compared. Results: The cohort consisted of 561 male (60%) and 374 female (40%) patients. Of the 935 patients with medium-sized renal calculi, 535 (57.2%) were treated with shockwave lithotripsy (SWL), 201 (21.4%) with retrograde intrarenal surgery (RIRS), 110 (11.7%) with minimally invasive percutaneous nephrolithotomy (miniperc), and the remaining 89 (11.7%) patients with micropercutaneous nephrolithotomy (microperc). In the SWL group, stones were located mostly in the pelvis (51%), while in the miniperc and microperc groups, they were located mainly in the lower pole (46%, 53%, respectively). Stone-free rates after a single session were 77.2%, 86.1%, 88.8%, and 83.6% in the SWL, RIRS, microperc, and miniperc groups, respectively. Although no serious complications (above Clavien level III) were noted in any of the groups evaluated, Clavien I to II complications were common in the miniperc group. Conclusion: Although SWL is the preferred treatment option for patients with medium-sized (10-20mm) renal stones, endourologic methods also have been found to have a significant role. Relatively lower complication rates along with higher stone-free status observed with the RIRS technique compared with percutaneous approaches have made this method a valuable option in the management of such stones in recent years.Öğe Current management of renal colic across Europe and its compliance to the European Association of Urology Guidelines on Urolithiasis: a survey from the European Section of Uro-technology, European Section of Urolithiasis, Young Academic Urologists study groups(Polish Urological Assoc, 2022) Guven, Selcuk; Sonmez, Mehmet Giray; Somani, Bhaskar Kumar; Goezen, Ali Serdar; Sarica, Kemal; Gomez Rivas, Juan; Nagele, UdoIntroduction Renal colic due to ureteral stones represents the primary acute condition in urology. Although guideline recommendations are available the institution, urologist, and patient preferences in diagnosis and treatment may differ. We aimed to evaluate the adherence of different European countries to the European Association of Urology (EAU) guidelines of urolithiasis and demonstrate trends in diagnostic and treatment approaches. Material and methods We used a survey including 33 questions clustered in four sections. The survey was circulated to the representatives of the main urological centers in Europe using the European Section of Uro-technology (ESUT), the European Section of Urolithiasis (EULIS), the Young Academic Urologists (YAU), and the European Urology Residents Education Programme (EUREP) mailing lists. The first section included participant and institution demographics, the second assessed the common diagnostic and treatment pathways, the third discussed the advantages and disadvantages of treatment strategies and the fourth investigated treatment preferences in different clinical scenarios. A descriptive analysis was performed. Results Of all participants, 84.21% stated that their departments follow specific guidelines, with no significant differences between institutions (p = 0.18). Preferred treatment practice difference in the case scenarios was significantly influenced by the Department bed capacities (p = 0.01), and complications varied between institutions (p = 0.02). Interestingly, 37-45% of participants were unaware of the different treatment costs. Conclusions Although urologists generally decide according to local or international guidelines when approaching renal colic patients, there are deviations in clinical practice due to `doctor preference' and `bed availability'. Many urologists are unaware of treatment costs.Öğe A Delphi consensus to standardize the technique of anatomical endoscopic enucleation of prostate: a study by ESUT endoscopic enucleation of prostate study group(Springer, 2023) Tunc, Lutfi; Herrmann, Thomas; Guven, Selcuk; Scoffone, Cesare Marco; Bozzini, Giorgio; Yilmaz, Sercan; Romero-Otero, JavierPurposeOur objective was to establish a standardized technique for Anatomical Endoscopic Enucleation of Prostate (AEEP) utilizing a consensus statement to provide robust recommendations for urologists who are new to this procedure.MethodsThe participants were electronically sent a questionnaire in three consecutive rounds. In the second and third rounds, the anonymous aggregate results of the previous round were presented. Experts' feedback and comments were then incorporated to refine existing questions or to explore more controversial topics in greater depth.ResultsForty-one urologists participated in the first round. In the second round, all Round 1 participants received a 22-question survey, resulting in a consensus on 21 items. In the third round, 76% (19/25) of the second-round respondents also participated, reaching a consensus on 22 additional items. The panelists consensually agreed on detaching the urethral sphincter at the beginning of the enucleation and not at the end of the enucleation. To prevent incontinence, it was recommended that the apical mucosa be preserved through various approaches between 11 and 1 o'clock while gently disrupting the lateral lobes in their apical part, avoiding an excess energy delivery approximation to the apical mucosa.ConclusionTo optimize laser AEEP procedures, urologists must follow expert guidelines on equipment and surgical technique, including early apical release, using the 3-lobe technique for enucleation, preserving apical mucosa with appropriate approaches, gently disrupting lateral lobes at their apical regions, and avoiding excessive energy delivery near the apical mucosa. Following these recommendations can lead to improved outcomes and patient satisfaction.Öğe Determination of Face and Content Validity of Cadaveric Model for Holmium Anatomic Endoscopic Enucleation of the Prostate Training: An ESUT AEEP Group Study(Elsevier, 2021) Tunc, Lutfi; Bozzini, Giorgio; Scoffone, Cesare Marco; Guven, Selcuk; Hermann, Thomas; Porreca, Angelo; Misrai, VincentBackground: Bench and virtual reality nonbiological simulator models for anatomic endoscopic enucleation of the prostate (AEEP) surgery have been reported in the literature. These models are acceptable but have limited practical applications. Objective: To validate a fresh-frozen human cadaver model for holmium AEEP training and assess its content validity. Design, setting, and participants: Holmium AEEP operations on fresh-frozen cadavers performed by an experienced surgeon were recorded, and a video, including the main steps of the operation, was produced. Outcome measurements and statistical analysis: The video and an accompanying questionnaire were subsequently distributed electronically to ESUT AEEP study group experts and associates (N = 32) for assessment of the AEEP training model. A ten-point Likert global rating scale was used to measure the content validity. Results and limitations: A total of 26 answers were returned (81%). The experts agreed on the model's suitability for AEEP training (mean Likert score: 8). According to the responses, identifying anatomic structures and landmarks was the most valuable aspect of the model in terms of AEEP training (median Likert score: 9). Conversely, the experts found the model's ability, in terms of demonstrating laser and tissue reactions, to be weak (median Likert score: 6) Conclusions: Based on the content validity assessment, the fresh-frozen cadavertraining model for laser AEEP seems to be a promising model for demonstrating and learning the correct prostate enucleation technique. Patient summary: An increasing number of researchers have proposed that anatomic endoscopic enucleation of the prostate (AEEP) should replace transurethral resection of the prostate surgery and become the gold standard for treatment of bladder outlet obstruction due to benign prostatic hyperplasia. AEEP requires anatomic familiarity for enucleation, technical knowledge, and a solid training program before starting with the first cases. This is the first cadaver study to assess the content validity of a fresh-frozen human cadaver model for AEEP training. (C) 2021 The Authors. Published by Elsevier B.V. on behalf of European Association of Urology.Öğe Evaluation of Applied Laparoscopic Urology Course Using Validated Checklist(Soc Laparoendoscopic Surgeons, 2013) Tunc, Lutfi; Guven, Selcuk; Gurbuz, Cenk; Gozen, Ali Serdar; Tuncel, Altug; Saracoglu, Firat; Istanbulluoglu, OkanBackground and Objectives: The objectives of this study were to investigate the effectiveness of the applied laparoscopic urology course using a validated checklist and to determine any differences in laparoscopic skills achieved by the participants at the end of the course period based on whether they began their training in a dry or wet laboratory. Methods: To facilitate the mastering of challenging laparoscopic skills by urologists, a unique 3-day mini-training program was established at the Gulhane Military Academy of Medicine, Surgical Research Center, Ankara, Turkey. Only 30 trainees were accepted in each course, and they were divided into 3 subgroups. The primary outcome of the study was the changes in the performance and task accomplishment duration of the trainees at the beginning compared with the end of the course. The secondary outcome was any differences in the basic skills of the trainees based on whether they started their training in the dry or wet laboratory. Results: The overall laparoscopic skills, which were evaluated by use of a standardized laparoscopic suturing task score, significantly improved (18.8 to 26.0, P < .001), and the time needed for task accomplishment decreased throughout the course (9.5 minutes to 5.25 minutes, P = .002). With respect to the course design, laparoscopic skills scores and the times needed for task accomplishment showed no statistically significant changes at the end of the course despite the fact that the trainees had started their training at different stages. Conclusion: The applied short-term laparoscopy course was shown to be an effective format particularly for achieving laparoscopic skills in which suturing and knotting are essential. This is mainly achieved through close cooperation in dry and wet laboratories.Öğe Evaluation of the optimal duration for retrograde intrarenal stone surgery to prevent postoperative complications(Sage Publications Ltd, 2022) Yitgin, Yasin; Altinkaya, Nurullah; Turaliev, Nurmanbet; Guven, Selcuk; Ergul, Rifat Burak; Boyuk, Abubekir; Verep, SamedObjective To evaluate retrograde intrarenal surgery (RIRS) outcomes and to determine the effect of operative time on complications of RIRS. Methods Patients undergoing RIRS for renal stones were evaluated. These patients were divided into two groups according to the operation time (Group 160 minutes). Peroperative outcomes such as fluoroscopy time, stone-free rates, complications and duration of hospitalization were compared. Results Group 1 consisted of 264 patients and Group 2 consisted of 297 patients. SFR rates, duration of hospitalization, and postoperative urinary tract infection rates were similar in both groups. Fluoroscopy time was 7.8 +/- 7.3 (0-49) sec in group 1 and 13.1 +/- 9.8 (0-81) sec in group 2. Complications according to modified Clavien-Dindo classification system (MCDCS) were 13 and 32 patients (Grade 1), 31 and 63 patients (Grade 2), 1 and 1 patient (Grade 3) in group 1 and 2, respectively. There was statistical difference between the two groups in terms of duration of fluoroscopy time and the MCDCS. Although duration of hospitalization and UTI rates were higher in group 2, no statistical significance was observed among groups. Conclusion Limiting the operation time to 60 minutes in RIRS seems to be important in reducing postoperative complications.Öğe Examining Pediatric Cases From the Clinical Research Office of the Endourological Society Ureteroscopy Global Study(Elsevier Science Inc, 2017) Guven, Selcuk; Basiri, Abbas; Varshney, Anil Kumar; Aridogan, Ibrahim Atilla; Miura, Hiroyasu; White, Mark; Kilinc, MehmetOBJECTIVE To evaluate the characteristics and outcomes of ureteroscopy (URS) in children treated in several hospitals participating in the Clinical Research Office of the Endourological Society (CROES) Study, and to present the overall results of pediatric URS compared with adults. PATIENTS AND METHODS The CROES Study collected data on consecutive patients treated with URS for urolithiasis at each participating center over a 1-year period. The collected prospective global database includes data for 11,885 patients who received URS at 114 centers in 32 countries. Of these URStreated patients, 192 were <= 18 years old. RESULTS Of the 114 centers participating in the study, 42% had conducted pediatric URS. Among the pediatric cases, 7 were infants, 53 were small children, 59 were school-aged children, and 73 were adolescents. A considerable number (37%) of the pediatric cases had previously undergone URS treatment. No differences in the surgical outcomes of the adults and children were reported. The URS-treated children had a greater number of positive preoperative urine cultures when compared with adult cases treated. A semirigid scope was used in the vast majority of pediatric cases (85%). According to the present data, within the group of URS-treated children, the younger the child, the more readmissions occurred. CONCLUSION URS is as efficient and safe in children as it is in adults. The data suggest that readmissions among URS-treated children are associated with age, with the likelihood of readmissions greater among younger age groups. (C) 2016 Elsevier Inc.Öğe Experts' recommendations in laser use for the endoscopic treatment of prostate hypertrophy: a comprehensive guide by the European Section of Uro-Technology (ESUT) and Training-Research in Urological Surgery and Technology (TRUST)-Group(Springer, 2023) Ortner, Gernot; Guven, Selcuk; Somani, Bhaskar Kumar; Nicklas, Andre; Scoffone, Cesare Marco; Gracco, Cecilia; Goumas, Ioannis KartalasPurposeTo identify expert laser settings for BPH treatment and evaluate the application of preventive measures to reduce complications.MethodsA survey was conducted after narrative literature research to identify relevant questions regarding laser use for BPH treatment (59 questions). Experts were asked for laser settings during specific clinical scenarios. Settings were compared for the reported laser types, and common settings and preventive measures were identified.ResultsTwenty-two experts completed the survey with a mean filling time of 12.9 min. Ho:YAG, Thulium fiber laser (TFL), continuous wave (cw) Tm:YAG, pulsed Tm:YAG and Greenlight & TRADE; lasers are used by 73% (16/22), 50% (11/22), 23% (5/22), 13.6% (3/22) and 9.1% (2/22) of experts, respectively. All experts use anatomical enucleation of the prostate (EEP), preferentially in one- or two-lobe technique. Laser settings differ significantly between laser types, with median laser power for apical/main gland EEP of 75/94 W, 60/60 W, 100/100 W, 100/100 W, and 80/80 W for Ho:YAG, TFL, cwTm:YAG, pulsed Tm:YAG and Greenlight & TRADE; lasers, respectively (p = 0.02 and p = 0.005). However, power settings within the same laser source are similar. Pulse shapes for main gland EEP significantly differ between lasers with long and pulse shape modified (e.g., Moses, Virtual Basket) modes preferred for Ho:YAG and short pulse modes for TFL (p = 0.031).ConclusionHo:YAG lasers no longer seem to be the mainstay of EEP. TFL lasers are generally used in pulsed mode though clinical applicability for quasi-continuous settings has recently been demonstrated. One and two-lobe techniques are beneficial regarding operative time and are used by most experts.Öğe Experts' recommendations in laser use for the treatment of upper tract urothelial carcinoma: a comprehensive guide by the European Section of Uro-Technology (ESUT) and Training Research in Urological Surgery and Technology (TRUST) group(Springer, 2023) Ortner, Gernot; Somani, Bhaskar Kumar; Guven, Selcuk; Kitzbichler, Gerhard; Traxer, Olivier; Giusti, Guido; Proietti, SilviaPurpose To highlight and compare experts' laser settings during endoscopic laser treatment of upper tract urothelial carcinoma (UTUC), to identify measures to reduce complications, and to propose guidance for endourologists.Methods Following a focused literature search to identify relevant questions, a survey was sent to laser experts. We asked participants for typical settings during specific scenarios (ureteroscopy (URS), retrograde intrarenal surgery (RIRS), and percutaneous treatment). These settings were compared among the reported laser types to find common settings and limits. Additionally, we identified preventive measures commonly applied during surgery.Results Twenty experts completed the survey, needing a mean time of 12.7 min. Overall, most common laser type was Holmium-Yttrium-Aluminum-Garnet (Ho:YAG) (70%, 14/20) followed by Thulium fiber laser (TFL) (45%, 9/20), pulsed Thulium-Yttrium-Aluminum-Garnet (Tm:YAG) (3/20, 15%), and continuous wave (cw)Tm:YAG (1/20, 5%). Pulse energy for the treatment of distal ureteral tumors was significantly different with median settings of 0.9 J, 1 J and 0.45 J for Ho:YAG, TFL and pulsed Tm:YAG, respectively (p = 0.048). During URS and RIRS, pulse shapes were significantly different, with Ho:YAG being used in long pulse and TFL in short pulse mode (all p < 0.05). We did not find further disparities.Conclusion Ho:YAG is used by most experts, while TFL is the most promising alternative. Laser settings largely do not vary significantly. However, further research with novel lasers is necessary to define the optimal approach. With the recent introduction of small caliber and more flexible scopes, minimal-invasive UTUC treatment is further undergoing an extension of applicability in appropriately selected patients.Öğe How do endoscopic bladder tumor resection techniques affect pathology practice? EAU Section of Uro-Technology (ESUT) and Uropathology (ESUP) survey(Springer, 2023) Guven, Selcuk; Colecchia, Maurizio; Oltulu, Pembe; Bonfante, Giulia; Enikeev, Dmitry; Esen, Hasan; Herrmann, ThomasPurpose We aimed to examine how different endoscopic bladder tumor resection techniques affect pathologists' clinical practice patterns. Methods An online survey including 28 questions clustered in four main sections was prepared by the ESUT ERBT Working Group and released to the pathologists working in the institutions of experts of the ESUT Board and the working groups and experts in the uropathology working group. A descriptive analysis was performed using the collected data. Results Sixty-eight pathologists from 23 countries responded to the survey. 37.3% of the participants stated that they always report the T1 sub-staging. Of those who gave sub-staging, 61.3% used T1a, b. 85.2% think that en bloc samples provide spatial orientation faster than piecemeal samples, and 60% think en bloc samples are timesaving during an inspection. 55.7% stated that whether the tissue sample is en bloc or piecemeal is essential. 57.4% think en bloc sample reduces turnaround time and is cost-effective for 44.1%. A large number of pathologists find that the pathology examination of piecemeal samples has a longer learning curve. Conclusion The survey shows that pathologists think that they can diagnose faster, accurately, and cost-effectively with ERBT samples, but they do not often encounter them in practice. Moreover, en bloc samples may be a better choice in pathology resident training. Evidence from real-life observational pathology practice and clinical research can reveal the current situation more clearly and increase awareness on proper treatment in endoscopic management of bladder tumors.Öğe How does the COVID-19 pandemic affect the preoperative evaluation and anesthesia applied for urinary stones? EULIS eCORE-IAU multicenter collaborative cohort study(Springer, 2020) Gokce, Mehmet Ilker; Yin, Shanfeng; Sonmez, Mehmet Giray; Eryildirim, Bilal; Kallidonis, Panagiotis; Petkova, Kremena; Guven, SelcukStone disease is a unique condition that requires appropriate management in a timely manner as it can result in both emergent conditions and long term effects on kidney functions. In this study it is aimed to identify the up-to-date practice patterns related to preoperative evaluation and anesthesia for stone disease interventions during COVID-19 pandemic. The data of 473 patients from 11 centers in 5 different countries underwent interventions for urinary stones during the Covid-19 pandemic was collected and analyzed retrospectively. Information on the type of the stone related conditions, management strategies, anesthesiologic evaluation, anesthesia methods, and any alterations related to COVID-19 pandemic was collected. During the preoperative anesthesia evaluation thorax CT was performed in 268 (56.7%) and PCR from nasopharyngeal swab was performed in 31 (6.6%) patients. General anesthesia was applied in 337 (71.2%) patients and alteration in the method of anesthesia was recorded in 45 (9.5%) patients. A cut-off value of 21 days was detected for the hospitals to adapt changes related to COVID-19. Rate of preoperative testing, emergency procedures, conservative approaches and topical/regional anesthesia increased after 21 days. The preoperative evaluation for management of urinary stone disease is significantly affected by COVID-19 pandemic. There is significant alteration in anesthesia methods and interventions. The optimal methods for preoperative evaluation are still unknown and there is discordance between different centers. It takes 21 days for hospitals and surgeons to adapt and develop new strategies for preoperative evaluation and management of stones.Öğe Impact of COVID-19 on Clinical and Academic Urological Practice: A Survey from European Association of Urology Section of Uro-technology(Elsevier, 2020) Heinze, Alexander; Umari, Paolo; Basulto-Martinez, Mario; Suarez-Ibarrola, Rodrigo; Liatsikos, Evangelos; Rassweiler, Jens; Guven, SelcukBackground: The unexpected coronavirus disease 2019 (COVID-19) pandemic has spread worldwide rapidly, developing into a global health crisis. At the same time, it has seriously impacted the daily activities in all the fields of urology. Objective: To better understand the impact of the COVID-19 pandemic on clinical, academic, and scientific activities as well as on the quality of life of urologists from the main centers in Europe. Design, setting, and participants: We conducted a survey using a 37-item questionnaire. The survey included three main sections: clinical practice, academic/scientific activities, and personal/social quality of life. Outcome measurements and statistical analysis: A descriptive analysis was performed using the collected data. Results and limitations: A total of 107 representatives affiliated to different centers from 22 countries completed the survey. Clinical activities were affected in 54.2% of the centers, and 85.0% of the elective surgeries were cancelled. Of the urological departments, 64.5% were still performing minimally invasive surgery for malignant disease. In 33.6% of the hospitals, dedicated and specially equipped operating theaters for COVID-19-positive patients were not available. According to 72.9% of participants, COVID-19 had a substantial negative impact on academic activities, and 82.3% of the respondents agreed that their quality of life has been affected negatively by the pandemic. Finally, 92.5% of the participants believe that the pandemic will have a moderate to severe impact on the health system of their countries. Conclusions: Data collected in this survey provide insight into changes brought about in clinical and academic settings amid COVID-19. Along with shortages such as bed occupancy and personal protective equipment, it highlights negative impacts on academic and scientific activities, including the personal and social life of urologists. Patient summary: It is essential to understand the impact of the coronavirus disease 2019 (COVID-19) pandemic on clinical, academic, and scientific urological activities, as well as on related personal and social issues. (C) 2020 The Authors. Published by Elsevier B.V. on behalf of European Association of Urology.Öğe Infections in urology: slow progress reflected in clinical practice(Springer, 2020) Guven, Selcuk; Mert, Ali[Abstract Not Availabe]Öğe A multicenter-based critical analysis of laser settings during intrarenal laser lithotripsy by the Turkish academy of urology prospective study group (ACUP study)(Aves, 2022) Sonmez, Mehmet Giray; Guven, Selcuk; Tuncel, Altug; Karabulut, Ibrahim; Kilic, Ozcan; Seckiner, Ilker; Tefik, TzevatObjective: In this multicenter prospective study, we aimed to evaluate the use of holmium:yttrium aluminum garnet laser during retrograde intrarenal surgery for kidney stones and the relationship between laser-related parameters and procedure-related perioperative parameters. Material and methods: The 769 patients whose laser setting parameters (fiber thickness, number of shots, frequency (max.), laser power (max.), and total energy) were completely registered were included in this study program. The intraoperative ureteral lesions were evaluated using postureteroscopic lesion scale (PULS) scores and the postoperative complications with the modified Clavien-Dindo classification system. Results: The maximum levels of laser power and the frequency were used in the middle calyceal stones; the value of total energy consumed was found to be higher gain in cases with multiple stones (all parameters P < .05). There was a significant positive correlation among (mean number of shots [P < .001, r = 0.46], frequency [P = .009, r = 0.1], maximum power [P < .001, r = 0.11], total energy [P < .001, r = 0.25]), anesthesia time (P < .001, r - 0.42), surgery time (P < .001, r - 0.47), and stone size. The mean number of shots increased (P < .001, r = 0.25), and the frequency level decreased (P < .001, r = -0.17) significantly with increasing Hounsfield unit (HU) values. Again, the mean number of shots and maximum laser power increased in correlation with the increasing hospitalization time (P = .004, r = 0.09 and P = .02, r = 0.07, respectively). In addition, it was observed that higher laser subparameter values and thicker fibers were used in PULS grade 2. Conclusion: As the stone size and HU values increased, laser-setting parameters were found to show significant variability. The increase in different parameters of the laser setting was found to be associated with longer anesthesia time, surgery time, and hospitalization period and increased risk of local trauma with PULS grade.
