Dialysis Access Salvage (Fistuloplasty)

What is access salvage?

A fistula or graft is a lifeline, and it narrows over time — scar tissue (intimal hyperplasia) builds up at predictable points until flows drop, needling becomes difficult, or the access blocks completely. Access salvage is the set of procedures that keeps it working: balloon dilation of the narrowing (fistuloplasty for a fistula, graftoplasty for a graft), clot removal when the access has thrombosed, and venoplasty of the central veins in the chest when the obstruction sits there.

Warning signs a fistula is failing

• Dialysis flows falling, or rising venous pressures on the machine
• Prolonged bleeding after needles are removed
• A thrill that has weakened, or an arm that has begun to swell
• Difficult needling or recurrent poor-clearance sessions

Reporting these early matters: a narrowed access is straightforward to treat; a clotted one is a bigger procedure with a shorter fuse.

What the procedure involves

• Performed through a needle puncture of the access itself, under local anaesthesia, usually as a day procedure
• The narrowing is crossed with a wire and dilated with a balloon; drug-coated balloons — which release a medicine that slows the scar tissue re-forming — are used where the evidence supports them, typically for narrowings that keep recurring
• Central vein narrowings are treated through the same access with venoplasty; stents are reserved for selected situations
• The access can usually be needled for dialysis the same day or the next

What to expect afterwards

Bruising at the puncture site is common and settles. Re-narrowing over months is the honest limitation of every balloon procedure — many accesses need planned repeat treatments, and surveillance is part of keeping a fistula alive for years. Rupture of a treated segment and access thrombosis are uncommon but recognised risks, managed at the same sitting where possible.

Is it right for me?

If your access is misbehaving, an ultrasound in clinic maps the problem the same day. I go through the findings with you and your renal team, so the fix — balloon, declot or, occasionally, a new access — happens before a catheter is needed.