What is the function of venous valves?

There are blood vessels distributed throughout our body. Generally speaking, there are two main types of blood vessels. The first type is arteries and the second type is veins. Different blood vessels have different functions, but they are all related to people's physical health. So the question is, what role does the so-called venous valve in medicine play in the human body?

The valves of the veins are very thin, soft, and transparent. When blood flows toward the heart, the valves adhere to the walls of the veins, keeping the veins unobstructed. When venous pressure increases due to standing or other reasons, venous blood flows in reverse. Under the impact of reverse blood flow, the two valve leaflets open and close together to prevent blood from flowing back. Therefore, the only function of the venous valve is to allow venous blood to flow back to the heart in one direction, that is, it acts as a one-way valve. If for some reason the valve loses its function as a one-way valve, blood will flow back, preventing venous blood from flowing smoothly toward the heart, which will lead to venous reflux disease. Venous valve dysfunction is also a common cause of varicose veins in the lower limbs.

Diseases related to venous valves:

Phlebitis:

Overview:

Inflammation of the veins, often complicated by thrombosis. It may be caused by injury or infection, or by unknown causes, which may subsequently lead to thrombosis; or inflammation may occur after thrombosis. Superficial phlebitis can be treated with rest and supportive measures.

Causes

Long-term infusion of high-concentration and highly irritating drugs, or placement of highly irritating plastic tubes in veins for too long can cause chemical inflammatory reactions in the local venous wall; local venous infection can also be caused by lax aseptic operation during the infusion process.

【Diagnosis points】

After infusion, cord-like red lines appear along the vein, and local tissues become red, swollen, burning, and painful, sometimes accompanied by systemic symptoms such as chills and fever.

【Diagnosis of the disease】

After infusion, especially after the infusion of irritating chemical drugs, cord-like red lines appear, local tissues become red, swollen, burning, and painful, and in severe cases, local necrosis may occur.

【treat】

The principle is to avoid infection and reduce irritation to blood vessel walls.

1. Strictly implement aseptic technical operations. Drugs that are irritating to blood vessels, such as erythromycin and hydrocortisone, should be fully diluted before use, and prevent the drugs from overflowing out of the blood vessels. At the same time, the injection site should be changed frequently to protect the vein.

2. Raise the affected limb and apply brake, and apply hot and wet compress with 95% alcohol or 50% magnesium sulfate locally.

3. Apply Chinese medicine Waifu Ling or Ruyi Jinhuang Powder externally, twice a day, each time for 30 minutes.