الفهرس 
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Abstract
Venous thromboembolism (VTE) remains a major cause of morbidity and mortality. There are three factors that contribute to DVT.These factors are called Virchow’s triad :venous stasis,hypercoagulability and changes in the endothelial blood vessel lining (such as physical damage).
Upper extremity deep vein thrombosis (UEDVT) is an increasingly recognized complication in medical ICU, especially after the increase in usage of central venous catheters (CVC) for different purposes.
There are many risk factors associated with upper extremity deep venous thrombosis following insertion of central venous catheters. These risk factors include lumen of catheter, infusate, and co-morbidities, such as autoimmune diseases, renal failure, history of cancer, a history of prior deep vein thrombosis.