People on dialysis often notice a problem before a scan does, because they feel the thrill every day. That daily check is useful.
01
Problems that interrupt dialysis
Narrowing often develops near the join or where needles have been placed. Flow falls, dialysis clears waste less well, and the access may clot. Infection is more likely with grafts and catheters than with a mature fistula, but any access can become infected.
02
Warning signs
- The thrill is weaker or has gone
- Bleeding after dialysis takes much longer to stop
- The arm is newly swollen
- A pulsatile lump is enlarging
- The hand becomes cold, painful, or numb
- There is fever, redness, or pus
03
When to seek assessment
Tell the dialysis unit the same day if the thrill disappears or the hand becomes cold. Fever after a dialysis session needs urgent medical review. A slowly maturing fistula can be booked as a planned vascular consultation.
04
How access problems are usually evaluated
Examination of the thrill and the hand is followed by duplex ultrasound. A fistulogram and angioplasty are used for selected narrowings. Surgical revision is considered when angioplasty is unlikely to hold or the access has already failed.
Questions patients ask
Can I check a fistula myself?
Yes. A light touch should find a buzz, called a thrill, along the vein. If that buzz disappears, contact the dialysis unit. Do not poke or cut the area.
Why does my hand hurt during dialysis?
One cause is steal, where the access draws arterial blood away from the hand. It needs assessment. It should not be ignored because it settles after the session.
This page is general education about vascular conditions and the way they are usually assessed. It does not diagnose a person or replace a consultation. Decisions about tests and treatment depend on an individual clinical assessment. Nothing on this website promises a particular result, a cure, or freedom from pain.
