stenosis of pulmonary artery

例句：

1. 1. The patient hada stenosis of the arterythat required surgery.
   患者动脉有狭窄，需要手术。
2. 2. The heart's valvescan become stenosed due toaging.
   心脏的瓣膜因老化而变得狭窄。
3. 3. The narrowing of the artery caused the blood flow to be severelyrestricted.
   动脉的狭窄导致血流严重受限。