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