What causes deep vein thrombosis? What are the factors that cause DVT?
The factors that precipitate deep vein thrombosis include venous stasis, vascular injury and hypercoagulability. Clinically, many factors involving the above three aspects uniformly and objectively lead to venous thrombosis, and the common ones are as follows:
① Surgery: especially orthopaedic, thoracic, abdominal and genitourinary surgeries;
② Tumors: malignant tumors of pancreas, lung, gonad, breast and urinary tract;
③ Trauma: especially spine, pelvis and lower limb fractures;
Long-term bed rest: such as acute myocardial infarction, stroke, after surgery;
(5) The role of pregnancy and estrogen;
⑥ Hypercoagulable state: deficiency of antithrombin III, C protein or S protein, circulating lupus anticoagulants, myeloproliferative diseases, abnormal fibrinemia, disseminated intravascular coagulation (DIC);
⑦ Phlebitis and venous interventional diagnosis or treatment lead to venous injury. The mechanism of venous thrombosis caused by the above causes is not a single, often is a combination of factors, such as surgery in addition to the local vein damage, long-term postoperative bed will make venous blood stasis; It also leaves the blood in a hypercoagulable state after major surgery.