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Six-Month Outcomes from the Prospective, Multi-Center, Non-Randomized Clinical Study of the COVERA™ Arterio VeNous (AV) Stent Graft in the Treatment of Stenosis in the VEnous OutfloW of AV Fistula Access Circuits (AVeNEW PAS).
Cardiovasc Intervent Radiol
January 2025
Scientific Affairs, Becton Dickinson and Company, Tulsa, USA.
Purpose: The AVeNEW Post-Approval Study (AVeNEW PAS) follows upon results from the AVeNEW IDE clinical trial and was designed to provide additional clinical evidence of safety and effectiveness using the Covera™ Vascular Covered Stent to treat arteriovenous fistula (AVF) stenoses in a real-world hemodialysis patient population.
Materials And Methods: One hundred AVF patients were prospectively enrolled at 11 clinical trial sites in the USA and treated with the covered stent after angioplasty of a clinically significant target stenosis. The primary safety outcome was freedom from any adverse event that suggests the involvement of the AV access circuit evaluated at 30 days.
The Role of Duplex Ultrasound and Flow/Pressure Ratio in Predicting Invasive Treatment for High Venous Pressure in Patients Undergoing Hemodialysis.
Medicina (Kaunas)
December 2024
Division of Nephrology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833401, Taiwan.
: Vascular access complications, particularly high venous pressure, pose significant challenges for hemodialysis patients undergoing hemodialysis. Limited research has focused on identifying predictive factors for invasive treatment. This study aimed to identify patients who might benefit from frequent monitoring and conservative management based on duplex ultrasound (DUS) evaluation.
View Article and Find Full Text PDFSurgical Obliteration of a Filum Terminale Arteriovenous Fistula Following Aborted Endovascular Embolization: Illustrative Case Report and Literature Review.
Cureus
December 2024
Department of Neurological Surgery, Rutgers University New Jersey Medical School, Newark, USA.
Arteriovenous fistulas of the filum terminale are rare vascular malformations that predominantly affect males and can present with various neurological symptoms. In this study, we indexed previously published cases of filum terminale arteriovenous fistulas demonstrating that endovascular and microsurgical management are both proven to be appropriate and successful treatment modalities with low complication rates. Endovascular treatment is far less invasive; however, it is associated with higher failure rates, which need to be managed surgically.
View Article and Find Full Text PDFFactors Affecting Outcomes of Percutaneous Transluminal Angioplasty for Central Vein Occlusive Disease in the University of the Philippines-Philippine General Hospital: A 10-Year Experience.
Acta Med Philipp
November 2024
Division of Thoracic, Cardiac and Vascular Surgery, Department of Surgery, College of Medicine and Philippine General Hospital, University of the Philippines Manila.
Objective: To describe the treatment outcomes of patients who underwent Percutaneous Transluminal Angioplasty (PTA) for Central Vein Occlusive Disease (CVOD) in end-stage kidney disease and determine the association between patient profile and treatment outcomes.
Methods: A single-institution, retrospective review of patients aged 18 and above with end-stage kidney disease who underwent PTA for CVOD in the University of the Philippines - Philippine General Hospital (UP-PGH) from January 1, 2013, to December 31, 2022, was performed. These patients' demographic and clinical profiles were evaluated using means, frequencies, and percentages.
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
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