Assertion: percent stenosis | /r/HasProperty | serious
Facets:
value: usually
type: DEGREE
Source sentences:
text: Usually, a 70 percent stenosis is considered serious enough to warrant treatment with angioplasty, which widens the narrowed portion of the artery by inflation of a tiny balloon, and/or stenting, in which a small metal tube is positioned in the artery to prop it open.