Which is a Better Predictor for the Safety and Efficacy of Retrograde Intrarenal Surgery; Stone Size or Volume? A Study of RIRsearch Study Group.

To compare the predictive effects of stone size and volume on the efficacy and safety of retrograde intrarenal surgery (RIRS) and to determine the cutoff values of stone volume for prediction of RIRS efficacy and safety. Patients who underwent RIRS between 2017 and 2021 in six referral centers were retrospectively included in the study. The database of the RIRsearch group, which was formed prospectively, was used for this retrospective analysis.

The Effect of Reusable Flexible Ureteroscope Aging on the Efficacy and Safety of Retrograde Intrarenal Surgery.

Reusable flexible ureteroscopes may lose their mechanical functionality through overuse, which is known as "aging of the flexible ureteroscope." Although mechanical deterioration has been shown in several studies, the data about the effect of this situation on the efficacy and safety of retrograde intrarenal surgery (RIRS) are missing. The aim of our study was to evaluate the effect of the aging of flexible ureteroscopes on the efficacy and safety of RIRS.

Is Psoas Muscle Mass Associated with Failure of Ureteral Access Sheath Insertion and Complications from Retrograde Intrarenal Surgery? A Case-Control Study from RIRSearch group.

To investigate the association between psoas muscle mass (PMM) and failure of ureteral access sheath (UAS) insertion and complications from retrograde intrarenal surgery (RIRS). A multicenter retrospective case-control study was conducted that included patients who underwent RIRS despite failure of UAS insertion (Cohort 1) and confounder-matched control patients who underwent RIRS after successful UAS insertion (Cohort 2). For morphometric analysis of PMM, ipsilateral psoas muscle areas (iPMAs) were measured using the coreslicer.

Determining the Stone Free Rate of Retrograde Intrarenal Surgery. Which Radiological Technique? RIRSearch Study Group.

Objective: To evaluate the sensitivity and specificity of ultrasonography (USG) and kidney ureter bladder radiography (KUB) for the determination of stone-free status of retrograde intrarenal surgery (RIRS) according to different stone-free status definitions.

Materials And Methods: The patients who underwent RIRS between September 2021 and September 2022 were prospectively included in the study. All patients underwent a KUB radiography, urinary system USG and noncontrast abdominal tomography at the postoperative first month of the surgery.

Does neo-adjuvant chemotherapy improve the negative effect of lymphovascular invasion in survival after radical cystectomy?

Purpose: There is a lack of studies in the literature to evaluate the impact of the specific benefit of the use of neo-adjuvant chemotherapy (NAC) on the negative effect of lymphovascular invasion (LVI) on prognosis. We aimed to evaluate the survival differences of patients according to the presence of LVI with and without administration of NAC before radical cystectomy (RC).

Materials And Methods: We retrospectively evaluated data of the patients who underwent RC with pelvic lymphadenectomy and urinary diversion for bladder cancer recorded in the bladder cancer database of the Turkish Uro-oncology Association between 2007 and 2021.

Safety and Efficacy of Live Retrograde Intrarenal Surgery in Patients with Kindey Stone: Outcomes from a Boutique Course Series Which Complies with the Live Surgery Event Policies.

Background: Live surgery events (LSEs) are frequently organized for sharing the surgical experiences with surgeons at the beginning of their learning curves. The aim of this study was to investigate whether the outcomes and complication rates of patients underwent retrograde intrarenal surgery (RIRS) at LSEs are comparable with regular cases.

Methods: Ten courses were organized during 2017-2022.

Does High Ventilation Mode Affect the Success Rates of Retrograde Intrarenal Surgery? A Single-Blind Randomized, Prospective, Single-Center Study.

Retrograde intrarenal surgery (RIRS) has been accepted as a first-line therapeutic option for kidney stones <2 cm. Renal mobility might be a challenging situation for the surgeon targeting the laser, thereby limiting the renal mobility during surgery might affect the surgical success. The main objective of the present trial was to evaluate the effect of two different ventilation modes on the efficacy and safety of RIRS performed under general anesthesia.

Reliability and accuracy of varicocoele videos in YouTube.

Objective: To evaluate the scientific impact of videos about varicocoele on YouTube.

Methods: A cross-sectional study was conducted at Turkey in September 2020, and comprised YouTube videos related to varicocoele. The videos were divided into 2 groups according to their reliability and accuracy using the European Association of Urology Sexual and Reproductive Guidelines 2020.

Is It a Good Strategy to Proceed a Retrograde Intrarenal Surgery Session Sheathless After Ureteral Access Sheath Insertion Failure? A RIRSearch Study.

To complement our previous findings regarding effect of ureteral access sheath (UAS) use, we checked RIRSearch database for patients who operated without using UAS. The aim of the study was to understand these new data better by comparing outcomes of retrograde intrarenal surgery (RIRS) that continued sheathless after a failed UAS insertion those planned and completed sheathless. Data of 195 patients who underwent sheathless RIRS for kidney and/or ureteral stones between 2011 and 2021 were retrieved from the database.

The delay in the diagnosis and treatment of newly diagnosed bladder cancer patients during COVID 19 pandemic.

Background: To evaluate the newly diagnosed bladder cancer(BC) patients during the pandemic period and compare them with the corresponding last4 years.

Objectives: To document the time schedules of BC patient evaluation and define the possible delays and investigate the reasons.

Methods: Newly diagnosed BC patients who underwent transurethral resection of bladder tumour in the last5 years were retrospectively included to study.

Recent scoring systems predicting stone-free status after retrograde intrarenal surgery; a systematic review and meta-analysis.

Introduction: Several scoring systems and nomograms have been developed to predict the success of retrograde intrarenal surgery. But no meta-analysis for the performance of scoring systems has yet been performed. The aim of this study was to compare predictive ability of recent scoring systems for stone-free rate of retrograde intrarenal surgery.

The Effects of Fentanyl on Testicular Ischemia-Reperfusion Injury.

Objective: Testicular torsion is a condition that often occurs as a result of the rotation of the spermatic cord in childhood and adolescence in men, manifests with acute pain and causes infertility in the future even if emergency intervention is performed. The aim of this study is to investigate the protective and preventive effects of fentanyl, a potent analgesic agent frequently used in anaesthesia practice, on testicular ischemia reperfusion injury, which manifests through acute pain.

Methods: A total of 16 adult male Wistar rats, weighing 200-250 g, were used in this study.

External validation of Modified Seoul National University Renal Stone Complexity Score to predict outcome and complications of retrograde intrarenal surgery: a RIRSearch Group study.

Introduction: The Modified Seoul National University Renal Stone Complexity Score (S-ReSC) is a simple model based solely on stone location regardless of stone burden. The aims of this study were to validate S-ReSC for outcomes and complications of retrograde intrarenal surgery (RIRS) and to evaluate its predictive power against the stone burden.

Material And Methods: Data of 1007 patients with kidney stones who had undergone RIRS were collected from our RIRSearch database.

Retrograde Intrarenal Surgery Is a Safe Procedure in Severe Obese Patients: Is It Reality or Prediction? A Propensity Score-Matching Analysis from RIRSearch Study Group.

The aim of the study was to assess whether severely obese patients have an increased risk of complications during and after retrograde intrarenal surgery (RIRS). The data of 639 consecutive patients undergoing RIRS for the treatment of upper tract urinary stones were analyzed retrospectively. The patients were divided into two groups according to their body mass index numbers (Group 1, <35; Group 2, ≥35).

The Predictive Factors for Readmission and Rehospitalization After Retrograde Intrarenal Surgery: The Results of RIRSearch Study Group.

Retrograde intrarenal surgery (RIRS) is a safe and effective treatment option for upper urinary tract stones smaller than 2 cm. Although several studies have documented perioperative and postoperative complications related to RIRS, there exists limited data regarding the readmission and rehospitalization of patients after RIRS. The aims of the study were to document the rates of readmission and rehospitalization after RIRS and to determine the predictive factors for readmission and rehospitalization.

The effect of optical dilatation before retrograde intrarenal surgery on success and complications: Results of the RIRSearch group study.

Aim: The guidelines propose optical dilatation before retrograde intrarenal surgery (RIRS), but there are currently no evidence-based studies concerning the impact of optical dilatation with semirigid ureteroscopy (sURS). The aim of this study was to evaluate the effect of optical dilatation through sURS prior to the RIRS procedure on the success and complications of RIRS.

Methods: A total of 422 patients were included in the retrospective multicentre study.

The Impact of Stone Density on Operative Complications of Retrograde Intrarenal Surgery: A Multicenter Study with Propensity Score Matching Analysis.

The aim of the study was to evaluate the impact of stone density on operative complication rates in retrograde intrarenal surgery (RIRS). A total of 473 consecutive patients undergoing RIRS for the treatment of upper tract urinary stones were included. To adjust for baseline confounders, one-to-one propensity score matching was performed.

The Effect of Diagnostic Ureterorenoscopy on Intravesical Recurrence in Patients Undergoing Nephroureterectomy for Primary Upper Tract Urinary Carcinoma.

Objective: The objective of this study is to evaluate the effect of diagnostic ureterorenoscopy (URS) prior to radical nephroureterectomy (RNU) on intravesical recurrence (IVR), in patients with primary upper urinary tract urothelial carcinoma (UTUC).

Materials And Methods: Retrospective analysis of 354 patients, who underwent RNU for UTUC from 10 urology centers between 2005 and 2019, was performed. The primary endpoint was the occurrence of IVR after RNU.