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Deep Vein Thrombosis (DVT): Venous Disorders: Merck Manual Home Edition |
 | | For example, deep vein thrombosis may develop in people who have had a heart attack and lie in hospital beds for several days without sufficiently moving their legs or in people whose legs and lower body are paralyzed (paraplegics). |
 | | When deep vein thrombosis blocks blood flow in a large leg vein, the calf swells and may be painful, tender to the touch, and warm. |
 | | Sometimes, a filter (umbrella) is placed inside a large vein between the heart and the area affected by deep vein thrombosis, usually the inferior vena cava, which returns blood to the heart from the lower part of the body. |
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