title: The author replies.
authors.forename: Ivory
authors.initials: I
authors.lastname: Crittendon
mesh_terms: D002302:Cardiac Output / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods*; D011651:Pulmonary Artery; D013815:Thermodilution / Q000295:instrumentation*; D014463:Ultrasonography / Q000295:instrumentation*