Pulmonary Stenosis (PS) is one of the simpler abnormalities of the heart. But even this requires some basic knowledge about the structure of the heart.
What is Pulmonary Stenosis ?
The word “pulmonary” denotes “to do with the lungs”.
The pulmonary valve is located between the right ventricle and the pulmonary artery. It regulates blood flow into the lungs, and prevents blood from leaking back into the right ventricle.
Sometimes, this pulmonary valve is extremely narrow, and blocks the smooth flow of blood into the lungs. This condition is called Pulmonary Stenosis – or PS, in short.
At other times, the pulmonary valve itself is normal, but there is an obstruction to blood flow from the right ventricle at other levels. For instance, there may be abnormal bundles of muscle below the pulmonary valve which obstruct flow. This is called “sub-valvular” pulmonary stenosis.
Or occasionally, there may be a narrowing of the pulmonary artery or its branches above the pulmonary valve. This is called “supra-valvular” pulmonary stenosis.