Ejection fraction velocity ratio as an indicator of aortic stenosis severity.


BACKGROUND Despite the widespread use of the continuity equation in the estimation of aortic valve area (AVA) in patients with aortic stenosis, it is subject to errors, time consuming, and can be technically demanding. As such, simpler methods of assessing aortic stenosis severity have been pursued. METHODS The ejection fraction velocity ratio [EFVR… (More)


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