Deep vein thrombosis refers to the development of a blood clot within a deep vein. this most commonly occurs in the legs, particularly the calves. However, it can also occur in the pelvis, the arms or any other deep vein. It can lead to partial or complete blockage of blood flow. A portion of the blood clot may becomes dislodged and float through the veins. It may become lodged in the lungs where it leads to temporary or permanent injury. Clots which reach the lungs are called pulmonary emboli. Blood clots can also develop in the superficial veins. These are often associated with inflammation of the vein, produce superficial thrombophlebitis. Clots in the superficial veins rarely break off. Deep vein thrombosis is more apt to occur in persons over age 60.
Causes of Thrombosis, Deep Vein
Pooling of blood in the veins, especially in the legs, is the most common agent that triggers the development of deep vein thrombosis. This can be seen with prolonged bed rest, surgical procedures or paralysis. Fractures, strokes and heart attacks are other conditions that predispose to having a deep vein thrombosis. The use of estrogens has been linked with increased risk of developing deep vein thrombosis. Some malignancies alter the clotting properties of the blood and can increase the risk of developing deep vein thrombosis.
Signs and Symptoms of Thrombosis, Deep Vein
Deep vein thrombosis may occur without producing any symptoms at all. The most common symptoms, particularly when the arm or leg is involved, is pain and swelling in the involved extremity. When the leg is involved, walking may be painful. The soreness may persist despite resting the extremity. Fever may occur. If the clot embolizes to the lung, there can be chest pain, shortness of breath, cough and rapid or irregular heart beats
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Medical Content Last Updated on 07/12/2008
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