Skip to Content
Medical Term:

regurgitant fraction


the amount of blood regurgitated into a cardiac chamber divided by the stroke output; normally, no blood regurgitates; in patients with severe valvular lesions such as mitral or aortic insufficiency, regurgitant fraction can approach 80%; this fraction affords a quantitative measure of the severity of the valvular lesion.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.