2f. The Problems – Pulmonary Artery Stenosis (Left Arterial Branch)
― Pulmonary artery stenosis is, in layman’s terms, a narrowing of one or both of the pulmonary arteries. The pulmonary arteries take unoxygenated blood from the heart to the lungs where it can then pick up oxygen again. It is typically a CHD (congenital heart defect), although it is something that can develop later, for example, [...] .


![[Blue prints]*](http://s2.bloggerscdn.com/media/t/14079133/14079133_s_1369116721.jpg)

