Blood clots are a state of agglutination of blood in vessels, which can cause blockage of them. Among them, deep vein thrombosis of the lower extremities is the most commonly happening clot. The venous system is returned from the distal end to the heart by overcoming gravity in the lower limb venous system returning to the heart. In this process, slow blood flow and blood stasis are easy to occur. Besides, the venous system of the lower extremities accounts for a relatively large proportion of the entire human venous system. These reasons lead to venous thrombosis in our lower limbs. Once the deep vein thrombosis of the lower extremities falls off and flows to the pulmonary artery, it may cause pulmonary artery embolism, which may cause cough, chest tightness, breath holding, and even sudden death in severe cases. With the extension of time, after venous thrombosis causes obstruction of the veins of the lower extremities, it will lead to skin trophic disorders and swelling of the calves, which is called post thrombotic syndrome.

If there is a sudden obvious leg swelling and leg pain, it is necessary to suspect whether there is a blood clot in the lower extremity. Some high-risk groups need to be vigilant.

For example, bedridden patients need to be alert to the development of lower extremity blood clots. There are also patients who have undergone orthopedic surgery or joint surgery. They also need to be screened for blood clots within a day or two after surgery. Advanced tumors are also a predisposing factor to hypercoagulable blood. In addition, for expectant women in the second and third trimesters of pregnancy, due to increased pressure on the legs and less exercise, it is also necessary to exclude the risk of venous thrombosis of the lower extremities.

In daily life, how to prevent venous thrombosis of the lower extremities? Here are some tips from 120. For high-risk groups who have been bedridden for a long time, it is recommended to actively move the leg muscles as much as possible. Medical compression stockings, external compression devices, or oral anticoagulants as prescribed, may be used to prevent the formation of blood clots. For the general population, it is necessary to avoid sitting and standing for a long time and increase the amount of lower limb activity. If we are sitting for a long time, we can do some ankle pump exercises, such as feet dorsiflexion in the state of straight lower limbs and legs, so that the muscles behind the calves can play the role of muscle pumps to promote venous return.