Background: Doppler ultrasound (DUS) blood volume flow (VF) calculation is the most reliable method for demonstrating the success of endovascular treatment of dysfunctional radiocephalic arteriovenous fistula (AVF). Due to the difficulty of this method for the interventionalist, VF-correlated markers are required during the procedure.
Purpose: To investigate the relationship between intraprocedural anatomical markers (AMs) and changes in VF induced by percutaneous transluminal angioplasty (PTA).
Material And Methods: The study included 56 patients with dysfunctional radiocephalic AVF who underwent PTA between September 2020 and 2022. The VF of all patients was measured using DUS before and 1 h after PTA. AMs were determined from 10 images, five before and five after balloon angioplasty.
Results: The mean post-PTA VF was 637 ± 277 mL/min compared to baseline (151 ± 107 mL/min). Before and after balloon angioplasty, vein diameter (VD), artery diameter (AD), stenosis minimum luminal diameter (MLD), stenosis percentage (SP), and VF values were statistically significant ( = 0.001). Spearman's correlation analysis showed a positive strong linear relationship between VF and MLD ( = 0.850, <0.001), and a negative strong linear relationship between VF and SP ( = 0.815). Receiver operating characteristic curve analysis showed that the sensitivity and specificity for VF ≥400 mL/min at cutoffs of SP <50% and MLD >2.5 mm were 81% and 82%, and 81% and 90%, respectively.
Conclusion: Among the AMs readily available during PTA, first MLD and then SP provided satisfactory results in predicting VF.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1177/02841851231223006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effect of Haemodiafiltration Versus Haemodialysis on Vascular Access Patency when Starting Haemodialysis.
Nephrol Dial Transplant
January 2025
Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan.
Background: Haemodiafiltration (HDF) therapy improves the prognosis by reducing inflammation and oxidative stress, and improving endothelial function. These factors contribute to vascular access (VA) stenosis, one of the most common complications in patients on haemodialysis (HD) or HDF. This study aimed to assess the efficacy of HDF on VA patency.
View Article and Find Full Text PDFA prospective study of factors associated with successful maturation of arteriovenous fistulas for hemodialysis.
J Ultrason
December 2024
Department of Nephrology, General Hospital of Mexico Dr. Eduardo Liceaga, Mexico City, Mexico.
Aim: Our objective was to determine the factors associated with the successful maturation of arteriovenous fistulas during hemodialysis.
Material And Methods: This prospective study included patients treated with hemodialysis and predialysis patients. Clinical, biochemical, sociodemographic, vascular ultrasound mapping, flow-mediated dilatation, and surgical factors were analyzed.
Ulnar-Basilic Arteriovenous Fistula for Hemodialysis: A 15-Year Overview.
Semin Dial
December 2024
Nephrology Department, Hospital General Universitario Reina Sofía, Universidad de Murcia, Murcia, Spain.
Article Synopsis
- The study focuses on ulnar-basilic fistulas (UBFs) for hemodialysis, which are less common than radiocephalic fistulas due to specific anatomical challenges.
- A retrospective review analyzed 11 UBFs created between 2008 and 2023, finding that while only 3.3% of functional distal AVFs were UBFs, many demonstrated immediate success.
- The results indicated that UBFs are safe and durable options for hemodialysis despite technical difficulties, particularly for patients with multiple health issues.
Ultrasound assessment of upper limb arteriovenous fistulas in hemodialysis patients at the Yaounde University Teaching Hospital.
J Ultrason
December 2024
Radiology and Radiation Oncology, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon.
Article Synopsis
- The study aimed to evaluate the characteristics of upper limb arteriovenous fistulas used for hemodialysis in patients, focusing on their Doppler ultrasound results.
- Conducted at Yaoundé University Teaching Hospital, it included 41 dialysis patients and found that a significant number had complications such as stenosis and low flow volume.
- Key findings showed that over half of the fistulas were stenosed, with common complications including aneurysms and reverse flow, highlighting a high prevalence of vascular issues in these access points.
Fluid-structure interaction in a follow-up study of arterio-venous fistula maturation.
Sci Rep
November 2024
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
Article Synopsis
- - Arteriovenous fistula (AVF) is the ideal vascular access for patients undergoing hemodialysis, created by surgically connecting an artery and vein, but research indicates that many do not function beyond a year.
- - This study utilized fluid-structure interaction (FSI) modeling to analyze non-Newtonian blood flow in a specific type of AVF over a 15-week and 1.5-year period, assessing both hemodynamic changes and wall alterations through ultrasound.
- - Key findings included the presence of counter-rotating vortices affecting pressure, different patterns of blood flow characteristics over time, minimal low-wall shear stress in healthy AVFs, and shifts in areas of maximum wall deformation as time
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!