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Deep Venous Thrombosis

• Risk factors related to Virchow’s Triad: stasis, hypercoagulability, and venous injury

• Most DVTs begin in the calf but can occur in the: femoral-popliteal veins, pelvic veins, intramuscular branches

• Radiographically: US is initial imaging study of choice. Look for noncompressibility of vein, echogenic lumen, enlarged vein. Color Doppler allows differentiation of occlusive and nonocclusive thrombi. Venography considered gold standard.

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