echocardiography: systolic peak flow velocity of descending thoracic aorta at end of expiration
echocardiography: systolic peak flow velocity of descending thoracic aorta at end of expiration
echocardiography: systolic peak flow velocity of descending thoracic aorta at end of expiration (procedure)
echocardiography: systolic peak flow velocity of descending thoracic aorta at end of expiration (procedure)