What is pulmonary artery stenosis?
The pulmonary arteries are the two major vessels that carry blood from the heart to the lungs. The right branch takes blood to the right lung, the left branch to the left lung. Pulmonary artery stenosis is a narrowing of any part of these blood vessels. “Stenosis” means “narrowing.” Pulmonary artery stenosis means that not enough blood flows to the lungs. The narrowed area needs to be expanded so that more blood can flow through it.
