Criteria for Accessory Vein Obliteration Trial. (CAVO)
Arteriovenous Fistula Maturation Failure
About this trial
This is an interventional treatment trial for Arteriovenous Fistula Maturation Failure focused on measuring arteriovenous fistula, hemodialysis, maturation
Eligibility Criteria
Inclusion Criteria:
1. All adult patients with age> 18 years and referred to KFSHRC for EFF satisfying any of the following criteria and willing to participate by providing informed consent will be included in the study:
- ESRD on dialysis with EFF at least 4 weeks post-surgery.
- Chronic kidney disease patients who are approaching ESRD with EFF and will need and are willing to start HD as soon as AVF matures.
Exclusion Criteria:
- Patients with AVF which is deeper than 0.8cm from the skin.
- AVF which is tortuous and lacks adequate straight segment for cannulation with 2 needles.
- Patients on anti-coagulation and those with bleeding or disorders.
- Life expectancy less than 12 months.
- Documented severe contrast allergy.
- Inability to come for timely and adequate follow up.
- Patients undergoing transplantation work up and expected to be transplanted within 6 months.
Sites / Locations
- King Faisal Specialist Hospital & Research CenterRecruiting
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
HAQ Criteria
Current Recommendation
Obliteration of accessory vein which satisfy the HAQ criteria as below: 60% or greater diameter of the main AVF 50% diameter of AVF with at least one more av>40% in diameter. 50% in diameter and divides into branches of same size. av likely to interfere with cannulation on physical examination. >30% in diameter and associated with stenosis at site of origin.
Obliteration of accessory vein which satisfy the current recommendations only defined as accessory vein with a diameter greater than 25% of the AVF diameter.