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