Chronic Kidney Disease Clinical Trial
Official title:
Contact-Free Video Imaging of Arteriovenous Fistulas In Chronic Hemodialysis Patients
The goal of this study is to find the best techniques to take non-invasive images of the arteriovenous fistula (AVF) in hemodialysis patients.
The vascular access is at the same time both the 'lifeline' and the 'Achilles' heel' of
hemodialysis patients. Despite improved understanding of the pathophysiology of stenosis and
thrombosis of the vascular access, unfortunately translating these advances into either
improved therapies or a superior process of care has not been very successful. As a result,
there continues to be an epidemic of arteriovenous fistula (AVF) maturation failure, a
proliferation of relatively ineffective interventions such as angioplasty and stent
placement, an extremely high incidence of catheter use (1).
A major problem is the timely diagnosis of AVF access dysfunction, which - undiagnosed and
untreated - will eventually result in its loss. Current methods of diagnosing impending AVF
deterioration utilize measurement of access flow, access flow recirculation, ultrasound
imaging and angiography. None of these methods are applicable on a per-treatment basis and
require some sort of intervention.
Recent advances in video-imaging open the opportunity to non-invasively track AVF movements,
possibly on a routine basis. These AVF movements are created by the arterial pulse and
routinely checked manually prior to each AVF cannulation. In this research the investigators
plan to film the actual AVF movements with the goal to explore the technical feasibility of
video-imaging based access surveillance.
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