What is an excellent Vena Cava?

Superior vena cava is a large vein that descends through the chest to the top of the heart. Its purpose is to bring de-oxygenated blood from the upper body back to the heart. Blood from the arms, neck and head travels back to the superior vena Cava, which then transmits it to the right atrium. It is one of the only two veins that bring de-oxygenated blood to the heart; The second is the lower vena cava, which transports blood from the lower body. Since then, it's just a little down to the heart. One other blood vessel, azygous vein that returns de-oxygenated blood from the torso, also connects to the superior vena Cava just before entering the right hall. The whole blood enters the right atrium and then moves to the right chamber, where it is then sent to the lung artery to the lungs for re -oxygenation.

North other structures are surrounded by a superior vena cava in the chest. It is considered that it is located inside the mediastin, or in the central part of the chest cavity located between the lungs. This builds in close proximity to several main structures, inChest, trachea and aortic. It also sits right next to the upper lobe of the right lung.

Thin walls superior vena cava cause it to be susceptible to pressure on the structures around it. When this happens, a de-oxygenated blood is blocked, which returns to the heart and causes it to back up. This causes the pressure to accumulate in the smaller veins of the upper body, which in turn leads to swelling in the face and arms. It is a relatively rare, but serious condition known as the excellent vena Cava syndrome.

vena Cava syndrome can be caused by a number of other problems. Cancer is the most common cause; Tumors, bridge often in the lungs, but perhaps in other areas, such as a trachea, can compress the container. Some diseases and infections including tuberculosis, syphilis and histoplasmosis can lead to a problem. Cardiac and vascular problems such as aortic aneurysm or pericarditis can develop n on the veinAdvertising pressure. Thromobose or blood clots, which are often the result of venous catheters, may also be the cause.