echocardiography: systolic time to peak flow velocity of prosthetic pulmonary valve at end of expiration
echocardiography: systolic time to peak flow velocity of prosthetic pulmonary valve at end of expiration
echocardiography: systolic time to peak flow velocity of prosthetic pulmonary valve at end of expiration (procedure)
echocardiography: systolic time to peak flow velocity of prosthetic pulmonary valve at end of expiration (procedure)