What is the cause of venous dilatation

summary

Around us, we can see that some people's legs have "green tendons" winding on the skin surface, stimulating people's vision. This is varicose veins of the lower limbs. What's the cause of varicose veins of the lower limbs? Let me tell you about it.

What is the cause of venous dilatation

First: venous pressure of lower limbs increased: including long-term standing or sedentary, physical labor, etc. People engaged in physical labor need the participation of abdominal muscles when exerting force. As a result, the abdominal pressure increases. The increase of abdominal pressure will cause temporary or intermittent compression of lower extremity veins, which will affect the centripetal return of lower extremity veins.

Second: venous reflux disorder: deep venous thrombosis of the lower extremity, thrombosis blocked the deep veins of the lower extremity, venous blood of the lower extremity can only be returned from superficial veins. Under normal circumstances, the superficial vein of the lower extremity only bears about 30% of the return blood volume. After the deep vein is blocked, it is difficult for it to undertake 100% of the task, so the superficial vein is gradually expanded to compensate. Long term compensation will lead to varicose.

Third: venous valve dysfunction: there are three kinds of blood vessels in the human body: veins, arteries and capillaries. Among them, only veins have valves, because veins are responsible for bringing blood from all parts of the body back to the heart. In order to prevent blood backflow, there will be valves in veins. When the blood flows to the heart, the valve opens, and when the blood flows away, the valve closes.

matters needing attention

In daily life, eat more fruits and vegetables, keep optimistic mood, pay attention not to fatigue, pay attention to the recovery of the body, in addition, if there are any symptoms should go to the hospital for examination, and corresponding treatment, these are to actively do.