thrombus burden
Quantitative assessment of clot volume and distribution within affected blood vessels during acute thrombotic events.
Full Definition
Thrombus burden refers to the extent and distribution of blood clot within the vascular system, particularly relevant in acute arterial or venous occlusions. Assessment includes clot length, cross-sectional area involvement, and downstream propagation patterns. High thrombus burden typically indicates extensive clot formation that may require mechanical thrombectomy devices rather than pharmacologic thrombolysis alone. The concept is particularly important in pulmonary embolism management, where massive thrombus burden may indicate need for embolectomy, and in acute limb ischemia where extensive clot may necessitate surgical intervention. Imaging techniques such as CT angiography or conventional angiography help quantify thrombus burden for treatment planning.
Usage
Usage note: Quantify extent and describe distribution patterns when documenting thrombus burden in clinical reports.
In Context
- "Angiography revealed high thrombus burden extending from the popliteal to the tibial vessels." — Diagnostic report
- "The extensive thrombus burden necessitated mechanical thrombectomy rather than thrombolytic therapy." — Treatment planning