ArticleCanadian Urological Association journal = Journal de l'Association des urologues du Canada2022
Effective ureteral access sheath insertion during flexible ureteroscopy: Influence of the ureteral orifice configuration.
Article in Canadian Urological Association journal = Journal de l'Association des urologues du Canada, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.
- Efficacy and safety of flexible and navigable suction access sheaths versus traditional access sheath in flexible ureteroscopic lithotripsy: a systematic review and meta-analysis.World journal of urology · 2025Pooled it
- Comparison of suction and standard ureteral access sheath versus sheathless flexible ureteroscopy in management of upper ureteral and renal calculi.BMC urology · 2026Trial
- Prostatic morphometric parameters and ureteral access sheath placement failure during retrograde intrarenal surgery: a retrospective cohort study.BMC urology · 2026Article
- Study of Factors Affecting Ureteral Access Sheath Insertion in Retrograde Intrarenal Surgery.Cureus · 2026Article
- The impact of preoperative CT-based 3D visualization model on ureteric access sheath placement failure without pre-stenting.BMC urology · 2026Article
- Effect of Conventional Versus Flexible and Navigable Suction Ureteral Access Sheaths on Ureteral Temperature Modulation During High-power Ho:YAG Laser Lithotripsy: An In Vitro Evaluation.European urology open science · 2026Article
- How do we choose the optimal length of flexible and navigable suction ureteral access sheaths (FANS): an EAU endourology and AUSET prospective multicenter analysis.World journal of urology · 2026Article
- Clinical risk factors and machine learning-assisted interpretation of ureteral access sheath insertion failure: a multicenter study and meta-analysis.Frontiers in surgery · 2026Article
- Article
- The optimal ratio of endoscope-sheath diameter with negative-pressure ureteral access sheath: an in vitro research.World journal of urology · 2024Article
- Predictive factors for difficult ureter in primary kidney stone patients before retrograde intrarenal surgery.Central European journal of urology · 2024Article
- CT-Based Predictor for the Success of 12/14-Fr Ureteral Access Sheath Placement.International journal of clinical practice · 2022Article
- Identification of the Risk Factors for the Failure of Ureteral Access Sheath Placement.International journal of clinical practice · 2022Article
Corrections and comments
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Authors and funding
7 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionWe sought to determine the possible predictors for effective insertion of the ureteral access sheath (UAS) during flexible ureteroscopy (fURS) in virgin ureters and their impact on postoperative ureteral wall injury and the procedural outcome.
methodsA retrospective review of prospectively collected data was performed for all consecutive patients scheduled for fURS of virgin ureters at two tertiary care centers between 2018 and 2020. Demographics, stone characteristics, and perioperative data, including the configuration of the ureteral orifice (UO) over introductory guidewire insertion, were collected. Multivariate logistic regression was used to detect possible predictors of successful UAS insertion.
resultsIn total, 128 patients who underwent primary fURS were included, with a mean age of 43.3±12.3 years and a stone burden of 12.3±6.9 mm. One hundred and ten patients (85.9%) achieved successful ureteral access insertion, including 81 (63.3%) without ureteral dilatation and 35 with dilation, of which 29 (22.7%) had a successful UAS afterward, while six failed. Total patients who underwent ureteral orifice dilatation were 35. 29 had a successful UAS afterward, while 6 failed. Patients who underwent successful UAS placement into virgin ureters were significantly older and had a lower body mass index (BMI). A tent-shaped UO over the guidewire led to successful UAS insertion. In multivariate regression analysis, cases with BMI <30 kg/m
conclusionsPatients with normal BMIs and tent-shaped UOs over the introductory guidewires are more likely to achieve primary UAS insertion without the need for ureteral dilation.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.