A comparison of three minimally invasive cardiac output devices with thermodilution in elective cardiac surgery.

摘要: This study compared the cardiac output responses to haemodynamic interventions as measured by three minimally invasive monitors (Oesophageal Doppler Monitor VigileoFlotrac and LiDCOrapid) concurrently using thermodilution, in surgical patients. The also assessed precision bias of these relation thermodilution measurements. After a fluid bolus at least 250 ml, change was different among devices, showing an increase with 82% measurements, Oesophageal 68%, 57% LiDCOrapid 41%. When comparing test devices kappa statistic showed best only fair agreement, 0.34, 0.28 -0.03. vasopressor administration, there significant variation devices. Using Bland-Altman analysis, comparison minimal bias, but wide limits agreement percentage errors 64.5%, 47.6% 54.2%. These findings indicate that differ their responses, do not always provide same information should be used interchangeably track changes.