Assertion: aortic aneurysm's size | /r/HasProperty | determined through repeated echocardiography
Facets:
Source sentences:
text: The determination to perform surgery is usually based upon the diameter of the aortic root (with 5 centimeters being a rule of thumb - a normal size is 2-3 centimeters) and the rate of increase in its size (as determined through repeated echocardiography).