| Venous Thrombosis (VT): A condition in which a blood clot (thrombus) forms in a vein.
Deep Vein Thrombosis (DVT): venous thrombosis that occurs in the "deep veins" in the legs, thighs, or pelvis.
Pulmonary Embolism (PE): A blood clot that breaks off from the deep veins and travels round the circulation to block the pulmonary arteries (arteries in the lung). Most deaths arising from DVT are caused by PE.
Venous Thromboembolism (VTE): The blocking of a blood vessel by a blood clot dislodged from its site of origin. It includes both DVT and PE.
Prophylaxis: A measure taken for the prevention of a disease.
Thromboprophylaxis: A measure taken to prevent thrombosis.
Post-thrombotic (Post-phlebitic) Syndrome: Chronic pain, swelling, and occasional ulceration of the skin of the leg that occur as a consequence of previous venous thrombosis.
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