Sirolimus Coated Angioplasty Versus Plain Balloon Angioplasty
Singapore170 participantsStarted 2021-01-11
Plain-language summary
A functioning dialysis access is critical to the delivery of hemodialysis therapy in patients with End Stage Renal Disease. Stenosis secondary to neo-intimal hyperplasia frequently occur within the dialysis access, resulting in dysfunction. Conventional balloon angioplasty is the current standard of care for treatment of stenosis but is associated with high rate of recurrence. Paclitaxel coated balloon has been shown to be superior to conventional balloon angioplasty in dialysis access interventions but recent meta-analysis has shown an increase in mortality when paclitaxel coated balloon and stents are used in lower limb angioplasty. Sirolimus coated angioplasty balloon are second generation drug coated balloon that have been shown to be effective in coronary artery interventions. Sirolimus is cytostatic in nature with good safety profile. In our pilot study, sirolimus coated balloon has been shown to be safe and effective in the salvaged of thrombosed arteriovenous graft. Therefore, the investigators are conducting a double-blinded, multi-center randomised control trial to compare the 6 month patency of arteriovenous fistula after intervention with sirolimus coated balloon versus conventional balloon angioplasty.
The investigators hypothesise that the addition of SCB after successful balloon angioplasty with conventional plain balloon is superior to conventional plain balloon angioplasty alone with decreased restenosis of the treated lesion, improved access circuit and treated lesion patency, and decreased number of interventions needed to maintain patency.
Who can participate
Age range
21 Years – 85 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Age 21 to 85 years
. Patient who requires balloon angioplasty for dysfunction arteriovenous fistula
. Matured AVF, defined as being in use for at least 1 month prior to angioplasty
. 4\. Successful angioplasty of the underlying stenosis, defined as less than 30% residual stenosis on Digital Subtraction Angiography (DSA) based on visual assessment of the operator and restoration of thrill in the AVF on clinical examination. (For concurrent asymptomatic or angiographically not significant central vein stenosis, patients can be included if no treatment is required.)
Exclusion criteria
. Patient unable to provide informed consent
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. Presence of symptomatic or angiographically significant central vein stenosis who require treatment, with more than 30% residual stenosis post angioplasty
. Patients who had underwent stent placement within the AVF circuit
. Patient who are currently enrolled in other drug eluting balloon trials
. Sepsis or active infection
. Recent intracranial bleed or gastrointestinal bleed within the past 12 months
. Allergy to iodinated contrast media, anti-platelet drugs, heparin or sirolimus