title: Invited commentary.
authors.affiliation: Department of Cardiovascular Anesthesia, Center for Aortic Surgery, The Cleveland Clinic Foundation, Cleveland, OH 44195, USA.
authors.forename: Robert
authors.initials: R
authors.lastname: Savage
authors.forename: Lars G
authors.initials: LG
authors.lastname: Svensson
mesh_terms: D002302:Cardiac Output; D006348:Cardiac Surgical Procedures; D015150:Echocardiography, Doppler / Q000379:methods*; D006801:Humans; D016343:Monitoring, Intraoperative / Q000379:methods; D011182:Postoperative Care / Q000379:methods; D015203:Reproducibility of Results