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