distal embolization
The migration of atherosclerotic debris or thrombus downstream during percutaneous intervention, potentially causing vessel occlusion.
Full Definition
Distal embolization occurs when atherosclerotic plaque debris, thrombus, or other particulate matter breaks free during percutaneous coronary intervention and travels downstream to occlude smaller vessels. This complication is particularly common during saphenous vein graft interventions and procedures involving heavily calcified or thrombotic lesions. Distal embolization can result in slow-flow or no-reflow phenomena, myocardial injury, and adverse clinical outcomes. Prevention strategies include embolic protection devices, pre-treatment with antiplatelet agents, and careful procedural technique.
Usage
Usage note: Distinguish from air embolism, which has different etiology and management.
In Context
- "Angiography revealed evidence of distal embolization following balloon inflation." — Procedural complication report
- "Embolic protection devices were deployed to prevent distal embolization during vein graft intervention." — Procedural planning