Urologia Internationalis最新文献

{"title":"Urinary Leakage after Robot-Assisted Radical Prostatectomy: Is Always Predictive of Functional Results?","authors":"Nicolò Fiorello, Alessandro Zucchi, Francesco Gregori, Gregorio Romei, Salvatore Fiorenzo, Andrea Di Benedetto, Riccardo Bossa, Andrea Mogorovich, Daniele Summonti, Sandro Benvenuti, Antonio Luigi Pastore, Carlo Alberto Sepich","doi":"10.1159/000541409","DOIUrl":"10.1159/000541409","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of the study was to evaluate if and when the presence of radiological urinary leakages of vesico-urethral anastomosis, after robotic radical prostatectomy, could provoke urethral strictures or affect continence recovery.</p><p><strong>Methods: </strong>We enrolled 216 patients, undergoing robot-assisted radical prostatectomy between January 2020 and December 2022 in three high-volume referenced centres for robotic surgery. Before removal of the bladder catheter, all patients underwent a cystourethrography in which the presence/absence of leakage was assessed at level of vesico-urethral anastomosis. Based on degree of severity of urinary leakage on cystourethrography, patients were classified as no leakage or grade 0, grade 1 with transversal diameter ≤1 cm, and grade 2 with transversal diameter ≥1 cm. At follow-up, urethral stenosis formation and urinary continence recovery were assessed; furthermore, post-operative 12-month functional outcome was determined using EORTC-QLQ-PR25 questionnaire.</p><p><strong>Results: </strong>Radiological urinary leakage was found in 30 patients with grade 1 and 33 patients with grade 2, for a total of 63 patients. Only 1 patient (1.5%), grade 2 urinary leakage, developed significant urethral stricture and required endoscopic urethrotomy after 6 months. Analysing the differences in those who removed the bladder catheter after 7-9 days and those who kept it longer, we found no statistically significant differences regarding recovery of continence (p = 0.23) or about urinary symptoms (p = 0.94).</p><p><strong>Conclusions: </strong>RARP remains gold-standard approach for treatment of localized prostate cancer and the superiority of this technique is safe in preventing urethral strictures and continence recovery, even in presence of significant anastomotic urinary leakage.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"68-73"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correlation of Magnetic Resonance Imaging and Computed Tomography with Biological Factor Expression and Lymph Node Metastasis in Aggressive Prostate Cancer.","authors":"Guanghai Ji, Fei Liu, Zhiqing Chen, Jie Peng, Hao Deng, Sheng Xiao, Yun Li","doi":"10.1159/000541953","DOIUrl":"10.1159/000541953","url":null,"abstract":"<p><strong>Introduction: </strong>This article focused on probing the correlation of magnetic resonance imaging (MRI) and computed tomography (CT) manifestations with biological factor expression and lymph node metastasis (LNM) in aggressive prostate cancer (PCa).</p><p><strong>Methods: </strong>A total of 136 PCa patients underwent surgical treatment and received CT and MRI examinations before surgery, whereby the apparent diffusion coefficient (ADC) values of quantitative MRI (qMRI) parameters were obtained. Patients were categorized into the non-aggressive PCa group and the aggressive PCa group according to the postoperative pathological results and Gleason scores. The expression of biological factors (prostate-specific antigen [PSA], proliferating cell nuclear antigen [PCNA], p27, and Ki-67) in both groups was tested. CT and MRI manifestations of aggressive PCa patients were analyzed. The qMRI parameters, biological factors levels, and LNM were compared in two groups; the relationships between CT and MRI manifestations, qMRI parameters, and positive expression of biological factors and LNM were probed in two groups.</p><p><strong>Results: </strong>In the aggressive PCa group, MRI and CT presented different degrees of abnormal prostate changes. In the aggressive PCa group, PSA and p27 expression and ADC values were lower, and PCNA and Ki-67, and LNM rates were higher. Patients' LNM rate was higher than that of ≤2 cm when the tumor diameter was >2 cm. ADC values were positively correlated with PSA and p27 positive expression and negatively correlated with PCNA, Ki-67, and LNM in the aggressive PCa group.</p><p><strong>Conclusion: </strong>MRI and CT manifestations of aggressive PCa had certain characteristics; MRI manifestations and qMRI possessed a correlation with biological factors and LNM; ADC could be employed to assess the aggressiveness of PCa.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"175-181"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142508892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of Clinically Significant Prostate Cancer Using Multiparametric MRI, Biparametric MRI, and Clinical Parameters.","authors":"Maximilian Oberneder, Thomas Henzler, Martin Kriegmair, Tibor Vag, Matthias Roethke, Sabine Siegert, Roland Lang, Julia Lenk, Joshua Gawlitza","doi":"10.1159/000541152","DOIUrl":"10.1159/000541152","url":null,"abstract":"<p><strong>Introduction: </strong>Multiparametric MRI (mpMRI) is gold standard for the primary diagnostic work-up of clinically significant prostate cancer (csPCa). The aim of this study was to assess the benefit of the perfusion sequence and the non-inferiority of an MRI without contrast administration (bpMRI) compared to mpMRI while taking clinical parameters into account.</p><p><strong>Methods: </strong>In this retrospective, non-interventional study we examined MRI data from 355 biopsy-naïve patients, performed on a 3T MRI system, evaluated by a board-certified radiologist with over 10 years of experience with subsequent mpMRI-TRUS fusion biopsy.</p><p><strong>Discussion: </strong>Only 16/355 (4.5%) patients benefited from dynamic contrast enhanced. In only 3/355 (0.8%) patients, csPCa would have been missed in bpMRI. BpMRI provided sensitivity and specificity (81.4%; 79.4%) comparable to mpMRI (75.2%; 81.8%). Additionally, bpMRI and mpMRI were independent predictors for the presence of csPCa, individually (OR: 15.36; p < 0.001 vs. 12.15; p = 0.006) and after accounting for established influencing factors (OR: 12.81; p < 0.001 vs. 6.50; p = 0.012). When clinical parameters were considered, a more balanced diagnostic performance between sensitivity and specificity was found for mpMRI and bpMRI. Overall, PSA density showed the highest diagnostic performance (area under the curve = 0.81) for the detection of csPCa.</p><p><strong>Conclusion: </strong>The premise of the study was confirmed. Therefore, bpMRI should be adopted as soon as existing limitations have been lifted by prospective multi-reader studies.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"26-33"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142112351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association between Urinary Flora and Urinary Stones.","authors":"Sihang Qiao, Jianwei Yang, Li Yang","doi":"10.1159/000540990","DOIUrl":"10.1159/000540990","url":null,"abstract":"<p><strong>Background: </strong>Urinary system stones are a common clinical disease, with significant differences in incidence and recurrence rates between different countries and regions. The etiology and pathogenesis of urinary system stones have not been fully elucidated, but many studies have found that some bacteria and fungi that are difficult to detect in urine constitute a unique urinary microbiome. This special urinary microbiome is closely related to the occurrence and development of urinary system stones. By analyzing the urinary microbiome and its metabolic products, early diagnosis and treatment of urinary system stones can be carried out.</p><p><strong>Summary: </strong>This article reviews the relationship between the urinary microbiome and urinary system stones, discusses the impact of the microbiome on the formation of urinary system stones and its potential therapeutic value, with the aim of providing a reference for the early diagnosis, prevention, and treatment of urinary system stones.</p><p><strong>Key messages: </strong>(i) Urinary stones are a common and recurrent disease, and there is no good way to prevent them. (ii) With advances in testing technology, studies have found that healthy human urine also contains various types of bacteria. (iii) Is there a potential connection between the urinary microbiota and urinary stones, and if so, can understanding these connections offer fresh perspectives and strategies for the diagnosis, treatment, and prevention of urinary stones?</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"89-96"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142141225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustained Response to Anti-PD-1 Therapy in Combination with Nab-Paclitaxel in Metastatic Testicular Germ Cell Tumor Harboring the KRAS-G12V Mutation: A Case Report.","authors":"Jinfeng Pan, Weiqi Yin, Yingzhi Chen, Hui Wang, Wei Wu, Suying Wang, Da Li, Qi Ma","doi":"10.1159/000541588","DOIUrl":"10.1159/000541588","url":null,"abstract":"<p><strong>Introduction: </strong>Cisplatin-based standardized therapy has been established for metastatic testicular germ cell tumors (TGCTs). However, the patient prognosis is considerably less favorable if the disease recurs following failure of first-line therapies. There is a need for novel treatment options for patients with recurrent or metastatic TGCTs, notably for those that are not sensitive to first-line chemotherapy. With the development of next-generation sequencing technologies, an increasing number of gene mutations has been identified in TGCTs. Previously published research studies have established a link between KRAS mutations and chemotherapy resistance, and have demonstrated that KRAS mutations are associated with inflammatory tumor microenvironment and tumor immunogenicity, leading to an improved response to inhibition of programmed death (PD-1) protein expression. Previous studies have reported that the tumor immune microenvironment of TGCT influences therapeutic efficacy.</p><p><strong>Case presentation: </strong>A 65-year-old metastatic patient with TGCT and a KRAS-12 valine-for-glycine gene mutation was described. This patient initially underwent inguinal orchiectomy and received two prior chemotherapeutic regimens. Following the rapid progression of the disease, the patient was treated with anti-PD-1 therapy and nab-paclitaxel chemotherapy, and his condition was successfully controlled by this combination treatment.</p><p><strong>Conclusion: </strong>To the best of our knowledge, this is the first successful case of KRAS-mutation patient with TGCT who achieved partially and sustained disease remission by combining immune checkpoint inhibitors with chemotherapy. This case provides an excellent example for personalized treatment of metastatic TGCTs.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"197-205"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142372985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anti-Reflux Ureteroileal Anastomosis for Orthotopic Ileal Neobladder Using Wallace Technique in a Single Trough.","authors":"Karim ElSaeed, Hany Moustafa, Sherif Abdelghani, Hossam ElAwady","doi":"10.1159/000541952","DOIUrl":"10.1159/000541952","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this study was to evaluate the modification of the subserous extramural tunnel for non-refluxing ureteroileal anastomosis in U-shaped pouches using the Wallace technique with a single trough.</p><p><strong>Methods: </strong>This prospective study was conducted from 2017 to 2022 in a single tertiary center after approval from the Research Ethics Committee of our institution (approval number: FWA 000017585). 45 patients' candidates for radical cystectomy and orthotopic urinary diversion were included in this study. The patients were diverted using a U-shaped pouch with ureteroileal anastomosis, combining the extramural serous-lined tunnel and Wallace techniques in a single trough. Operative time and complications, including ureteric obstruction, reflux, and renal function, were recorded within 1 year.</p><p><strong>Results: </strong>The modified ureteroileal anastomosis combined with the extramural serous-lined tunnel and Wallace techniques had a relatively short operative time (mean 132.2 ± 18.3 min) and short bowel segment incorporation (30 cm). In 43 patients, vesicoureteral reflux occurred in only 2 patients (4.7%). One case of anastomotic stricture was diagnosed (2.3%), which increased to 2 cases (4.7%) after 1 year. Three patients (7%) developed pyelonephritis during the year. The mean serum creatinine level of the patients before the operation was 1.2 mg/dL, which increased to 1.4 mg/dL 6 months postoperatively.</p><p><strong>Conclusion: </strong>A modification of the subserous extramural tunnel for non-refluxing ureteroileal anastomosis in U-shaped pouch appears to be a good simple alternative that is less time consuming and using a shorter segment of bowel for orthotopic diversion with a comparable complication rate.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"182-188"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spinal Anesthesia versus General Anesthesia in the Endoscopic Management of Proximal Ureteral Stones: A Critical Evaluation Focusing on the Total Anesthesia Time.","authors":"Emre Bulbul, Fahri Yavuz Ilki, Yasin Yitgin, Fatih Ustun, Ali Sezer, Ela Erten, Emine Yitgin, Selahattin Bedir, Kemal Sarica","doi":"10.1159/000543203","DOIUrl":"10.1159/000543203","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to compare spinal and general anesthesia methods in endoscopic management of proximal ureteral stones with a particular emphasis on total anesthesia time.</p><p><strong>Methods: </strong>A total of 246 adult patients undergoing ureteroscopic management for proximal ureteral stones between January 2021 and March 2023 were enrolled. Two different types of anesthesia, namely, spinal (group 1, n = 109) and general (group 2, n = 137) anesthesia, were applied during these procedures.</p><p><strong>Results: </strong>The mean total anesthesia time of group 1 was statistically significantly shorter than that of group 2 (61.4 ± 28.7 and 93.7 ± 29.2 min, respectively, p = 0.013). While 92.7% of patients in group 1 were stone free after the interventions, this value was 92% in group 2 (p = 0.828). There was no statistically significant difference between the two groups regarding peri- (p = 0.126) or postoperative (p = 0.284) complications.</p><p><strong>Conclusions: </strong>Our results demonstrated well that both spinal and general anesthesia methods could be applied in a successful and safe manner in the endoscopic management of proximal ureteral stones. However, a shorter total anesthesia time under spinal anesthesia could be anticipated during endoscopic management of proximal ureteral stones.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"189-196"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142865625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Renal Transplantation with Triple Ureter Implantation into the Urinary Bladder after Dissolving a Bilateral Ureterocutaneostomy for Posterior Urethral Valves.","authors":"Jonas Jung, Subhajit Mandal, Christer Groeben, Birgit Kortus-Götze, Joachim Hoyer, Johannes Huber, Luka Flegar","doi":"10.1159/000542302","DOIUrl":"10.1159/000542302","url":null,"abstract":"<p><strong>Introduction: </strong>We report a progressive treatment of a 31-year-old patient with end-stage renal disease secondary to congenital posterior urethral valve and valve bladder syndrome. He underwent a laser ablation of the urethral valve at the age of six, but on continuance of renal function deterioration ultimately a bilateral ureterocutaneostomy (UC) in the left lower abdomen had to be fashioned as a supravesical urinary diversion.</p><p><strong>Case presentation: </strong>For the management of dialysis dependent end-stage renal disease, an allogenic renal transplantation was planned. When a postmortal organ was available, the patient wished for a complete internalisation of the incontinent diversion if possible. To better delineate the current status of the lower urinary tract, an intraoperative cystoscopy was performed. Besides an elevated bladder neck and a low bladder capacity, there were no distinct pathologies. Therefore, a right iliac allogeneic renal transplantation with simultaneous dissolution of the bilateral UC and an anastomosis of all three ureters to the bladder was performed. Placement of a suprapubic catheter enabled safe urine drainage and a prospective evaluation of the voiding function. Because of obstructive voiding, we performed a transurethral resection of the prostate. This resulted in sufficient spontaneous voiding.</p><p><strong>Conclusion: </strong>After a 19-month observation period, the patient now exhibits good renal function with normal excretion and consistent retention parameters with satisfactory transurethral voiding and quality of life (QoL). This is an encouraging case where it was possible to convert an incontinent urinary diversion to a continent urinary diversion after renal transplantation to improve the patient's QoL.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"206-210"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142523239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of SARS-CoV-2 Pandemic on Diagnosis of Prostate Cancer.","authors":"Immanuel A Oppolzer, Marco J Schnabel, Selma Hammer, Hannah Zilles, Maximilian Haas, Christopher Goßler, Maximilian R Müller, Maximilian Burger, Michael Gierth","doi":"10.1159/000541753","DOIUrl":"10.1159/000541753","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of this study was to prove if the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic resulted in a delay in diagnosis and treatment of prostate cancer (PC).</p><p><strong>Methods: </strong>A monocentric, retrospective analysis was conducted at a university cancer center. Included were all patients with untreated PC diagnosed between January 2019 and December 2021. The observation covered 22 months of the SARS-CoV-2 pandemic and 14 months preceding it.</p><p><strong>Results: </strong>Nine hundred sixty-nine men prior (T0) and 1,343 during the pandemic (T1) were included. Mean age was 68.0 (SD 8.2). Median initial prostate-specific antigen was 8.1 ng/mL (T0) and 7.9 ng/mL (T1, p = 0.288). Time from biopsy to tumor board (T0: 1.3 months vs. T1: 0.9 months, p = 0.001), to staging (T0: 1.1 months vs. T1: 0.75 months, p = 0.707), and to therapy (T0: 3.0 months vs. T1: 2.0 months, p < 0.001) was shortened during the pandemic. Classified by d'Amico, a significant shift toward higher risk groups was seen (p = 0.024). Local staging showed an insignificant increase in locally advanced PCs. Metastatic diseases decreased from 10.3% to 8.9% (p = 0.433). Pathological staging showed pT3+ in 44.4% versus 44.7% (p = 0.565) and pN+ in 9.9% versus 9.6% (p = 0.899).</p><p><strong>Conclusion: </strong>Regarding the diagnosis and treatment of PC, we could not demonstrate any delays due to the SARS-CoV-2 pandemic.</p><p><strong>Introduction: </strong>The aim of this study was to prove if the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic resulted in a delay in diagnosis and treatment of prostate cancer (PC).</p><p><strong>Methods: </strong>A monocentric, retrospective analysis was conducted at a university cancer center. Included were all patients with untreated PC diagnosed between January 2019 and December 2021. The observation covered 22 months of the SARS-CoV-2 pandemic and 14 months preceding it.</p><p><strong>Results: </strong>Nine hundred sixty-nine men prior (T0) and 1,343 during the pandemic (T1) were included. Mean age was 68.0 (SD 8.2). Median initial prostate-specific antigen was 8.1 ng/mL (T0) and 7.9 ng/mL (T1, p = 0.288). Time from biopsy to tumor board (T0: 1.3 months vs. T1: 0.9 months, p = 0.001), to staging (T0: 1.1 months vs. T1: 0.75 months, p = 0.707), and to therapy (T0: 3.0 months vs. T1: 2.0 months, p < 0.001) was shortened during the pandemic. Classified by d'Amico, a significant shift toward higher risk groups was seen (p = 0.024). Local staging showed an insignificant increase in locally advanced PCs. Metastatic diseases decreased from 10.3% to 8.9% (p = 0.433). Pathological staging showed pT3+ in 44.4% versus 44.7% (p = 0.565) and pN+ in 9.9% versus 9.6% (p = 0.899).</p><p><strong>Conclusion: </strong>Regarding the diagnosis and treatment of PC, we could not demonstrate any delays due to the SARS-CoV-2 pandemic.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"158-166"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11965868/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142372984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Intrarenal Pressure through Dilatation State of the Renal Collecting System.","authors":"Yujun Chen, Heng Yang, Yue Yu, Haibo Xi, Gongxian Wang, Xiaochen Zhou","doi":"10.1159/000541637","DOIUrl":"10.1159/000541637","url":null,"abstract":"<p><strong>Introduction: </strong>The aim of the study was to explore the relationship between the dilation states of the renal collecting system in flexible ureteroscopy (f-URS) view and intrarenal pressure (IRP).</p><p><strong>Methods: </strong>Fifteen porcine kidneys were randomly selected and numbered 1 through 15. Pressure transducers were inserted into the renal calyx via puncture and adjusted to a zero position. The distal end of the f-URS probe was placed within the renal pelvis. Perfusion rates of 50 mL/min, 80 mL/min, and 100 mL/min were utilized. We observed the relationship between the dilation state of the renal collecting system and changes in IRP. The state of complete dilation was defined as an unchanging spatial morphology of the renal collecting system as visualized during f-URS.</p><p><strong>Results: </strong>With irrigation rates of 50 mL/min, 80 mL/min, and 100 mL/min, IRP values at the moment of complete dilation of the renal collecting system ranged from 16 to 18 cm H2O, 16-19 cm H2O, and 16-19 cm H2O, respectively. Maximum IRPs ranged from 47 to 49 cm H2O, 82-85 cm H2O, and 97-100 cm H2O, respectively. Prior to complete dilation of the renal collecting system, IRP consistently remained below 20 cm H2O. However, following full dilation of the renal collecting system, IRP rose rapidly and rapidly surpassed 20 cm H2O. Despite sustained elevations in IRP following full dilation, no significant alterations in the renal collecting system dilated morphological were observed with f-URS.</p><p><strong>Conclusions: </strong>In vitro experiments indicate that when the renal collecting system is not fully dilated, the IRP is consistently less than 20 cm H2O. Evaluation of IRP being within a safe range can be determined by assessing the dilation status of the renal collecting system.</p>","PeriodicalId":23414,"journal":{"name":"Urologia Internationalis","volume":" ","pages":"151-157"},"PeriodicalIF":1.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142475895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}