Which finding indicates a properly functioning arteriovenous graft (AV graft) during assessment?

Which finding indicates a properly functioning arteriovenous graft (AV graft) during assessment?

• A. Thrill present and palpated.
• B. Bruit heard without thrill.
• C. No distal pulses.
• D. Pain at the graft site.

Answer: (A)

A palpable thrill over the graft is the clearest sign that the AV graft is patent and functioning. That buzzing vibration results from high-velocity blood flow through the graft into the vein, so feeling it confirms the graft isn’t obstructed. Hearing a bruit can also indicate flow, but the thrill is the direct, reliable indicator you can assess by touch. In contrast, the absence of a thrill or the presence of new pain at the graft site, or absent distal pulses, suggests problems such as stenosis, thrombosis, or infection and requires prompt evaluation. So, a palpable thrill reflects ongoing, unobstructed flow through the graft, which is why it’s the best sign of proper functioning.

A palpable thrill over the graft is the clearest sign that the AV graft is patent and functioning. That buzzing vibration results from high-velocity blood flow through the graft into the vein, so feeling it confirms the graft isn’t obstructed. Hearing a bruit can also indicate flow, but the thrill is the direct, reliable indicator you can assess by touch. In contrast, the absence of a thrill or the presence of new pain at the graft site, or absent distal pulses, suggests problems such as stenosis, thrombosis, or infection and requires prompt evaluation. So, a palpable thrill reflects ongoing, unobstructed flow through the graft, which is why it’s the best sign of proper functioning.