Arteriovenous Fistula Clinical Trial
Official title:
Randomized Controlled Trial to Compare Therapeutic Effect of Digital Subtraction Angiography(DSA)，Ultrasound Guided Balloon Dilatation and Surgical Reconstruction in Arteria-venous Fistula(AVF) Stenosis in Maintenance Hemodialysis Patients
The purpose of this study is to compare the effect of DSA guided percutaneous balloon dilatation, ultrasound guided percutaneous balloon dilatation and surgical repair in the treatment of Stenosis of Arteria-Venous Fistula in Maintenance Hemodialysis Patients.
Eligibility Criteria:
1. Patients with long-term maintenance hemodialysis with AVF as the vascular access;
2. Positive clinical examination signs of AVF stenosis （not all required） : (1) the visual
examination: edema, prolonged bleeding time, hematoma, aneurysm or constriction of the
fistula .(2) the palpation examination: a narrowing of the outflow vein or aneurysm
formation. (3) the auscultation examination: high pitch and/or discontinuous murmur.
3. Doppler ultrasound /DSA/magnetic resonance angiography show the diameter of AVF fistula
is >50% narrow than the adjacent segment of the fistula lumen.
4. Blood flow of the AVF is <500ml/min or monthly declines of the blood flow>25%.
5. Patient signed the informed consent.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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