ArticleUrology annals
Failure of ureteral access sheath insertion in virgin ureters: A retrospective tertiary care center study.
Article in Urology annals. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
8 citing papers in PubMed, 10 citations in OpenAlex.
- Two versus four weeks ureteral stenting prior to flexible ureteroscopy after failed primary ureteral access sheath insertion: a randomized trial.BMC urology · 2026Trial
- HUDmax as a Novel Parameter in the Assessment of Ureteral Kinking: A Critical Evaluation for Predicting Ureteroscopic Lithotripsy Outcomes.Medicina (Kaunas, Lithuania) · 2025Article
- Article
- The effect of distal ureteral lateralization angle on ureteral trauma avoidance and successful ureteral access sheath placement.Ulusal travma ve acil cerrahi dergisi = Turkish journal of trauma & emergency surgery : TJTES · 2024Article
- Could radiological parameters help to predict the failure of ureteral access sheath placement.Urolithiasis · 2024Article
- Prevention of complications in endourological management of stones: What are the basic measures needed before, during, and after interventions?Asian journal of urology · 2024Review
- Effective ureteral access sheath insertion during flexible ureteroscopy: Influence of the ureteral orifice configuration.Canadian Urological Association journal = Journal de l'Association des urologues du Canada · 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
6 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe objective of the study was to identify the failure rate of insertion of ureteral access sheath (UAS) during primary flexible ureteroscopy (FURS). MATERIALS AND
methodsThis was a single-surgeon, single-tertiary care center retrospective study. All patients who underwent primary FURS for proximal ureteric or renal stones from November 2014 to May 2018 were included in the study. Patients with a stone burden of more than 20 mm were excluded from the study. A 10/12-Fr coaxial UAS (Bi-Flex, Rocamed) was used. Data collection included age, sex, body mass index (BMI), stone burden and location, previous spontaneous passage of stones, type of anesthesia, and preexisting congenital anomalies. The Chi-square test and
resultsOne hundred and twelve patients were included in the study. All patients underwent primary FURS. The failure rate of primary UAS insertion was 10.7% (
conclusionsWe believe that our study opens the door for a multicentric prospective trial. Identifying factors leading to a failed primary FURS and UAS insertion is crucial to properly counsel patients preoperatively about the number of procedures that they might need and to prevent the financial loss associated with failed UAS insertion.
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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.