echocardiography: effective regurgitant orifice of aortic valve at end of expiration
echocardiography: effective regurgitant orifice of aortic valve at end of expiration
echocardiography: effective regurgitant orifice of aortic valve at end of expiration
echocardiography: effective regurgitant orifice of aortic valve at end of expiration