What is the function of Pulmonary Vein?

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Veins and arteries of various types are an important part of circulatory and cardiovascular system. The whole function of these systems is carried with the help of lungs and heart which are themselves a complex network of different small parts and structures. Both these systems are entwined and so are their various parts. Pulmonary vein is one of the major veins that supplies blood to heart’s left side after collecting it from the lungs.


What is Pulmonary vein?

Normally, pulmonary veins are those veins that carry blood from lungs and pour it into the heat’s  left atrium. The major pulmonary vein emerge from lungs and branches out immediately into right and left pulmonary veins. The right pulmonary veins collect blood from the right lung and vice versa. One of the special characteristics of these veins is that pulmonary veins are the only veins that perform the function of transporting oxygenated blood.


How does it work?

The blood is circulated throughout our body via veins and arteries and the normal sequence is that the oxygenated blood is transported away from heart via arteries and the de-oxygenated blood is carried towards the heart via veins. But the pulmonary system of veins works differently. In this system, de-oxygenated blood is transported to lungs via arteries whereas; oxygenated blood is transported with the help of veins into the heart. This makes the pulmonary veins the only veins to transport oxygenated blood. When the blood goes into the heart, it undergoes series of steps. Firstly, the heart accepts the blood from superior and the inferior vena cavae in the chamber termed as right atrium. After this the blood from right atrium flows into right ventricle. The right ventricles then contract to pass on the blood via pulmonary artery inside the lungs. From lungs, the blood flows into left atrium via pulmonary veins. Finally, the blood in the left atrium is passed into left ventricle and is pumped into aorta which supplies it to the whole body.


What are its functions?

The most important function of pulmonary veins is to transport oxygen rich blood into the heart. After the blood is carried to various parts of our body via arteries, it looses oxygen and turns into de-oxygenated blood. Our body cannot live and grow without oxygen as tissue live and process with the help of this oxygen. The pulmonary vein performs the important function of carrying the oxygenated blood into the left atrium. Hence this vein is of immense significance as without it we would not be able to survive beyond couple of minutes. The pulmonary veins have been said to hold the key to the proper functioning of our circulatory and cardiovascular system.


What is Pulmonary Vein Isolation?

When an abnormal rhythm originates from the topmost heart chamber or atria it is called as atrial fibrillation. Usually the impulse travels in orderly fashion via heart. But sometimes the impulses change their mode and start spreading through atria, due to which the heart beats in a disorganized manner. For this treatment, circumferential mapping method is used for the ablation of the four type’s branches of pulmonary veins and it has been found to be very successful lately.


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