echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve at end of expiration
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve at end of expiration
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve at end of expiration (procedure)
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve at end of expiration (procedure)