echocardiography: systolic peak flow gradient of prosthetic aortic valve at end of expiration
echocardiography: systolic peak flow gradient of prosthetic aortic valve at end of expiration
echocardiography: systolic peak flow gradient of prosthetic aortic valve at end of expiration (procedure)
echocardiography: systolic peak flow gradient of prosthetic aortic valve at end of expiration (procedure)