run-on vessel
A patent vessel distal to an occlusion that receives blood flow through collateral circulation.
Full Definition
A run-on vessel refers to a patent arterial segment located distal to a complete occlusion that maintains blood flow through collateral circulation or retrograde filling. These vessels are important targets for revascularization procedures and indicate the potential for successful bypass or endovascular intervention. The identification and characterization of run-on vessels is crucial for treatment planning in peripheral arterial disease and affects the technical approach and success rates of interventions. Run-on vessels may demonstrate various flow patterns depending on the adequacy of collateral supply and the level of downstream resistance.
Usage
Usage note: Distinguish from 'runoff' which refers to distal circulation quality.
In Context
- "Despite complete occlusion of the superficial femoral artery, good run-on vessel was identified at the popliteal level." — Angiography report
- "Three-vessel run-on was demonstrated below the knee, indicating favorable anatomy for bypass grafting." — Pre-operative vascular assessment