echocardiography: systolic TVI1/TVI2 ratio of prosthetic aortic valve at rest
echocardiography: systolic tvi1/tvi2 ratio of prosthetic aortic valve at rest
echocardiography: systolic TVI1/TVI2 ratio of prosthetic aortic valve at rest (procedure)
echocardiography: systolic tvi1/tvi2 ratio of prosthetic aortic valve at rest (procedure)