What causes lower limb venous return disorder? Poor blood circulation in the lower extremity veins, obstruction of return, long-term accumulation of the lower extremity, is likely to lead to varicose veins. But for this problem, many patients are not clear, what is the cause of lower limb venous return disorder? Here is Xiao Mai to help you answer in detail.
What causes lower limb venous return dysfunction:
1. Persistent increase in venous pressure: Venous blood itself has a tendency of countercurrent due to the effect of gravity, but there are more venous valves in the venous wall of the lower limb, and the valves can only be opened upward to ensure the reverse flow of venous blood. However, if you stand for a long time, engage in gravity labor, chronic cough, constipation, etc., the venous blood will exert certain pressure on the venous wall and venous valve. Excessive pressure on the venous wall and valve will cause structural damage and aseptic inflammation of the venous wall and valve, which will lead to incomplete closure of the venous valve, resulting in poor venous blood return, which will further lead to a vicious cycle of intravenous high pressure, and the condition will be further worsened.
2. Deep vein thrombosis of lower extremity: thrombus blocks deep vein of lower extremity, and venous blood of lower extremity can only return through shallow vein. Under normal circumstances, the superficial veins of the lower limbs only bear about 30% of the amount of blood return, after the blockage of the deep veins, it is difficult to assume 100% of the task, leading to venous return obstacles, and will cause venous ulcers and stasis dermatitis and other manifestations for a long time.
3, venous wall structural defects: due to structural defects of the vein, long-term expansion can make the valve appear obsolete atrophy, and even gradually degenerate and disappear, such as valve defects before varicose veins, then at the same time in the valve destruction, the vein wall will be affected, resulting in venous stasis.
Finally, lower limb venous return obstruction is the main cause of lower limb varicose veins, and long-term standing workers lack alternating activities of muscle contraction and relaxation, and the blood in lower limb veins is not easy to return, so it is easy to cause varicose veins. Therefore, those who stand for a long time, such as teachers, traffic police, hairdressers, waiters, and sedentary office white-collar workers must pay attention to exercise, strengthen exercise, and actively prevent varicose veins.
What causes lower limb venous return disorder? The above is an introduction to this problem, I believe you have read the above answers to understand it, if there are any questions in the above answers, you can also click on our online experts for consultation, and finally star Silver medical experts suggest patients with varicose veins, be sure to do a good job of nursing knowledge for varicose veins.