Deep vein thrombosis and pulmonary embolism

Deep vein thrombosis (DVTDeep vein thrombosis: the obstruction of one of the deep veins, often in the calf, by a blood clot. ) is the formation of a bloodA fluid that transports oxygen and other substances through the body, made up of blood cells suspended in a liquid. clot Blood that has coagulated, that is, has moved from a liquid to a solid state.(thrombusA blood clot.) in a vein, usually in one of the legs. People who have had a stroke are at increased risk of DVTDeep vein thrombosis: the obstruction of one of the deep veins, often in the calf, by a blood clot. because they are usually immobile for a period after the stroke.

Sometimes, part of the clot can break off and travel in the bloodstream to another part of the body; it is then called an embolusA clot (or other material, for example, fat or air) that has become dislodged from a point in the blood system and travels in the circulation before lodging elswhere.. If the clot fragment blocks an arteryA blood vessel that carries blood away from the heart. Apart from the pulmonary artery and umbilical artery, all arteries carry oxygenated blood. within the lungs, this is known as a pulmonary embolism Obstruction of the pulmonary artery by a blood clot.(PE).

A pulmonary embolismObstruction of blood flow by an embolus, a clot (or other material, for example, fat or air) that has become dislodged from elsewhere in the blood system. can lead to reduced oxygen levels in the bloodA fluid that transports oxygen and other substances through the body, made up of blood cells suspended in a liquid., a rapid heart rate, low blood pressure and collapse. The risk of DVTDeep vein thrombosis: the obstruction of one of the deep veins, often in the calf, by a blood clot. and PE can be lessened by heparinA substance produced by the body, or given as medication, that reduces the likelihood of the blood to clot, coagulate. injections.[1,2]

References: 
  1. Goldstein LB. Acute ischemic stroke treatment in 2007. Circulation 2007; 116: 1504-14.
  2. Khaja AM and Grotta JC. Established treatments for acuteHas a sudden onset. ischaemic stroke. Lancet 2007; 369: 319-30.