Venous thromboembolism (VTE) is a blood clot that starts in a vein. VTEs affect up to 600,000 people in the United States each year. There are two types:
• Deep vein thrombosis (DVT) — A clot in a deep vein, usually in the leg, but sometimes in the arm or other veins.
• Pulmonary embolism (PE) — When a DVT clot breaks free from a vein wall, travels to the lungs and blocks some or all of the blood supply.
