title: In search of the Holy Grail: noninvasive or "low-invasive" cardiac output monitoring.
authors.forename: J S
authors.initials: JS
authors.lastname: Soble
mesh_terms: D001013:Aorta, Thoracic / Q000000981:diagnostic imaging*; D001783:Blood Flow Velocity; D002302:Cardiac Output; D003422:Critical Care; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods*; D015203:Reproducibility of Results; D018608:Ultrasonography, Doppler / Q000592:standards*