Causes of DVT
Blood clots are formed when blood stops moving and coagulates. This natural mechanism ensures blood flow will stop following minor accidents and cuts.
If a clot (known as a thrombus) forms in the leg's deep veins, DVT occurs.
If the clot is dislodged and begins to circulate in the body, it can cause a significant obstruction in the narrower vessels of the heart or lungs – known as venous thromboembolism (VTE). It is the dislodged clot that presents the danger.