Assertion: mitral valve | /r/CapableOf | pull on the heart
Facets:
value: to deair the apex
type: TRANSITIVE-OBJECT
value: heavily
type: DEGREE
Source sentences:
text: It may be due to a heavily calcified mitral valve annulus which cracks when the mitral valve is placed, or it may be due to heavily pulling on the heart to deair the apex of the left ventricle.