runoff vessels
Distal arteries that provide outflow from a treated vessel or bypass graft.
Full Definition
Runoff vessels refer to the distal arterial branches that provide outflow pathways from a proximal vessel or bypass graft, serving as the recipient circulation for revascularization procedures. In peripheral vascular interventions, runoff quality is assessed by evaluating the number, caliber, and patency of tibial vessels in lower extremity procedures, or digital arteries in upper extremity interventions. Good runoff, typically defined as at least one patent vessel extending to the ankle or digit, is crucial for procedure success and limb salvage outcomes. Poor runoff, characterized by multiple diseased or occluded distal vessels, significantly impacts the hemodynamic success of proximal interventions and may require staged procedures or alternative treatment strategies. Runoff assessment is performed using angiography and influences procedural planning, device selection, and prognostic expectations.
Usage
Usage note: Usually used in plural form; singular 'runoff vessel' less common
In Context
- "The patient had excellent three-vessel runoff to the foot, making him a good candidate for femoral-popliteal bypass." — Vascular surgery consultation
- "Poor runoff vessels compromised the long-term patency of the superficial femoral artery intervention." — Follow-up angiography report