echocardiography: calculated systolic mean flow gradient of descending thoracic aorta at end of expiration
echocardiography: calculated systolic mean flow gradient of descending thoracic aorta at end of expiration
echocardiography: calculated systolic mean flow gradient of descending thoracic aorta at end of expiration (procedure)
echocardiography: calculated systolic mean flow gradient of descending thoracic aorta at end of expiration (procedure)