Veins are the tubes in the cardiovascular system that guide and carry blood back to the heart. Veins begin in the capillaries and terminate in the atria. Small veins begin in the capillaries and gradually merge into medium and large veins during the return to the heart and finally into the atria. The patient appears sore and weak. Volumetric load test – This can be used as a therapeutic reference for patients with high CVP who still have clinical signs of cardiac output insufficiency. If 500 ml of fluid is rapidly infused within 20 min, the CVP does not increase significantly or even decreases; at the same time, the blood pressure increases and the heart rate decreases, which means that the patient has an absolute or relative volume deficit and the heart has the potential to continue receiving large amounts of fluid; conversely, the infusion must be done with caution. The perforating veins, which connect the superficial veins to the deep veins, also have valves that prevent blood from flowing from the deep veins to the superficial veins; however, when the perforating vein valves fail to function, the blood flows at will and puts pressure on the superficial veins, which dilate. There are three more established treatment options, one is to slow the progression of the disease by taking good care of it in an appropriate healthy manner. The second is surgical treatment, which is performed when the disease is so severe that it affects the life (there are certain risks and it is usually the last option). The third is pharmacological treatment, at present, the more respected drug is the use of 3500 mg of high-dose 3-hydroxyethyl rutin treatment, both Fury Trex Rutin granules, which, too, is approved by the National Drug Agency. How can we effectively prevent persistent blood flow in the veins? 1.Good maintenance in an appropriate healthy way to slow down the progression of the disease. 2.Surgical treatment, when the disease is so serious that it affects life, surgical treatment (there are certain risks, usually the last option). 3, drug treatment, at present, the more respected drug is the use of 3500 mg of high-dose 3-hydroxyethyl rutin treatment, both: Fu Rui Chuk Rutin granules, this, too, has been approved by the National Drug Agency.