title: Doppler ultrasound measurement of cardiac output.
mesh_terms: D001011:Aorta / Q000033:anatomy & histology; D001783:Blood Flow Velocity; D002302:Cardiac Output; D002303:Cardiac Output, Low / Q000175:diagnosis; D003422:Critical Care; D004452:Echocardiography / Q000379:methods; D006801:Humans; D008991:Monitoring, Physiologic; D012016:Reference Values; D013318:Stroke Volume; D014463:Ultrasonography