echocardiography: systolic V1/V2 ratio of prosthetic aortic valve at end of expiration
echocardiography: systolic v1/v2 ratio of prosthetic aortic valve at end of expiration
echocardiography: systolic V1/V2 ratio of prosthetic aortic valve at end of expiration (procedure)
echocardiography: systolic v1/v2 ratio of prosthetic aortic valve at end of expiration (procedure)