title: Transesophageal Doppler ultrasonography: evidence for improved cardiac output monitoring.
abstract: Cardiac output monitoring by transesophageal Doppler ultrasound has not gained wide clinical acceptance. A recently developed transesophageal Doppler device, Accucom 2, features technological advances aimed to reduce the error of this approach to the monitoring of cardiac output. To determine if Accucom 2 enables more accurate cardiac output monitoring, a prospective investigation was undertaken. Analyses of 923 simultaneous measurements of transesophageal Doppler and thermodilution cardiac output in 47 anesthetized patients were compared. Results using Accucom 2 were highly correlated with the results obtained with thermodilution (R = 0.91) and provided significantly greater accuracy in comparison with a previously developed Doppler cardiac output monitor, Accucom 1. Technological advances in transesophageal Doppler ultrasound hold promise for clinically useful noninvasive monitoring of cardiac output.
authors.affiliation: Yale University School of Medicine, Department of Anesthesiology, New Haven, Connecticut 06510.
authors.forename: A C
authors.initials: AC
authors.lastname: Perrino
authors.forename: J
authors.initials: J
authors.lastname: Fleming
authors.forename: K R
authors.initials: KR
authors.lastname: LaMantia
mesh_terms: D000368:Aged; D002245:Carbon Dioxide / Q000378:metabolism; D002302:Cardiac Output; D004947:Esophagus / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000379:methods*; D013815:Thermodilution; D014463:Ultrasonography
chemical_list: D002245:Carbon Dioxide