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A continuous buzzing vibration felt over a functioning AV fistula or graft — the physical sign that blood is flowing well through the access.
The thrill is the palpable vibration of turbulent blood flow through a dialysis access, felt most strongly near the anastomosis (where artery joins vein). A strong continuous thrill with a soft compression point means good flow; a weak, pulsatile, or absent thrill suggests stenosis or thrombosis and warrants urgent access evaluation. Patients are taught to check the thrill daily — it is the access's heartbeat. The audible counterpart (with a stethoscope) is the bruit.
The whooshing sound of blood flowing through a dialysis fistula or graft, heard with a stethoscope — the audible twin of the thrill.
The surgical connection created to allow blood to flow between the patient's circulatory system and the dialysis machine during hemodialysis sessions.
A surgical connection between an artery and a vein, typically in the forearm, created to provide reliable vascular access for hemodialysis.
The technique of inserting a needle into a vascular access to establish blood flow for hemodialysis, requiring specialized skills to prevent complications and preserve access longevity.
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