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Table of Contents
  • How do veins work and how can we help them?
  • Importance of the venous system
  • Anatomical classification of veins
  • When veins become distended, call for compression

How do veins work and how can we help them?

A widely branching system of blood vessels transports our blood around our bodies. The blood vessels are divided into arteries and veins depending on the direction in which the blood is flowing. The heart pumps the blood through the arteries to every last part of the body and supplies the cells with oxygen.

Importance of the venous system

In contrast, the venous system‘s task is to transport the deoxygenated blood from the body back to the heart and from there onwards to the lungs. Numerous tiny vessels called capillaries and venules collect the used, deoxygenated blood from all over the body and pass it onto the veins for return transport to the heart. Approximately 2,000 gallons of blood flow back to the heart through our venous system every day. The deoxygenated blood in the venous system is darker than the oxygenated blood in the arteries. Another distinguishing feature is blood pressure, which is considerably lower in the veins than in the arteries.

vein-health-legs

The blood from abdominal organs initially passes through the portal vein into the liver, where it is filtered before being transported further to the heart. There are several systems in the leg veins. The major part of the return transport in the legs is undertaken by the deep veins of the leg that run through muscles. 

venous-disease

Anatomical classification of veins

The veins are divided into the individual parts of the body:

  • Head veins
  • Arm veins
  • Abdominal veins
  • Leg veins

The blood from abdominal organs initially passes through the portal vein into the liver, where it is filtered before being transported further to the heart. There are several systems in the leg veins. The major part of the return transport in the legs is undertaken by the deep veins of the leg that run through muscles. The rest of the blood flows back through the superficial veins of the leg that run from the ankles up to the hollow of the knee or the groin, where they connect up with the deep veins of the leg. In order to push blood from the legs, mother nature equipped our veins with a brilliant solution. Legs have valve-like cusps that only allow the blood to pass in the direction of the heart like boats in a dock. If the blood flows up the leg as a result of the pressure exerted by the joint and muscle pumps, the valves open – if the blood wants to fall back into the leg under the effect of gravity, they close.

When veins become distended, call for compression

Physical exercise keeps the veins moving. 

As soon as we contract our muscles to walk, they squeeze our veins together. This pumps the blood up and out of our calves towards the heart. This is where the term “calf muscle pump” is derived from. After the contraction, pressure in the emptied veins drops and more blood can be sucked in, which explains why physical exercise is so important for healthy venous function.

Without physical exercise, the muscles cannot exert mechanical pressure on the veins, which then become distended and  prevent the valves lying inside them from closing properly anymore. The blood pools and the superficial veins, which are not stabilized by muscles, become dilated. This is noticeable as a feeling of tension and tired, heavy legs and visible as swelling, spider veins or tortuous varicose veins.

This is when medical compression garments can help. With their defined pressure gradient – medi®
 compression technology – mediven® compression garments reduce the venous diameter. This enables the valves inside the veins to close again and transport the blood more quickly towards the heart. Tense legs relax and the formation of blood clots (thromboses) is prevented. Thanks to the treatment, patients benefit from an improved sense of well-being.

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