echocardiography: effective regurgitant orifice of prosthetic aortic valve at rest
echocardiography: effective regurgitant orifice of prosthetic aortic valve at rest
echocardiography: effective regurgitant orifice of prosthetic aortic valve at rest (procedure)
echocardiography: effective regurgitant orifice of prosthetic aortic valve at rest (procedure)