Professional
Technical
IVT
runoff
Distal arterial circulation beyond a stenosis or bypass target.
Full Definition
The quality and extent of arterial circulation distal to a point of intervention or beyond a site of occlusive disease. Good runoff implies patent distal vessels providing adequate outflow for revascularization procedures, while poor runoff suggests compromised distal circulation that may affect procedure success. Assessment of runoff is crucial for determining optimal bypass targets and predicting long-term graft patency in surgical planning.
Usage
Usage note: Often qualified as 'good,' 'poor,' or 'adequate' in surgical documentation.
In Context
- "The patient has excellent three-vessel runoff to the foot, making him a good bypass candidate." — Pre-operative assessment
- "Poor runoff below the knee limits long-term graft patency expectations." — Surgical planning
Also known as
distal circulation
outflow
Contrasted with
inflow
Don't confuse with
outflow tract
collateral circulation