Intermediate
Technical
IVT
runoff vessels
Distal arteries that receive blood flow from a more proximal vessel, crucial for determining bypass target selection.
Full Definition
Runoff vessels refer to the patent distal arteries that provide outflow from a more proximal arterial segment or surgical bypass. In lower extremity revascularization, runoff typically describes the tibial and pedal vessels (anterior tibial, posterior tibial, and peroneal arteries) that receive flow from the popliteal artery. The quality and number of patent runoff vessels significantly influence bypass target selection, expected patency rates, and overall procedural success.
Usage
Usage note: Specify vessel names when possible; distinguish from general collateral circulation.
In Context
- "Angiography revealed three-vessel runoff with patent tibial arteries to the ankle level." — diagnostic imaging report
- "Poor runoff vessels below the knee significantly impact infrainguinal bypass patency rates." — surgical planning discussion
Also known as
outflow vessels
distal targets
Contrasted with
inflow vessels
Don't confuse with
collateral vessels
outflow tract