Cardiothoracic & vascular anesthesia
Agreement between cardiac output estimation by multi-beat analysis of arterial blood pressure waveforms and continuous thermodilution in post cardiac surgery intensive care unit patients
Authors' conclusion
In adult patients after cardiac surgery, including those with low cardiac output and arrhythmia CO-MBA is not interchangeable with the continuous thermodilution method via a PAC, when using a 30% error threshold.
Study context
- Population
- Adult post-operative cardiac surgical ICU patients927 hours of monitoring data
- Participants
- 79 patients
- Exposure
- CO-MBA vs CO-CTD
- Outcome
- Agreement of CO estimation (Bland-Altman analysis)
Methodological detailsprospective, Bland-Altman analysis
- Prospective
- Bland-Altman analysis
Main finding
As reported in the abstract
Agreement of CO estimation (Bland-Altman)
- Mean of differences
- 0.04 ± 1.04 L/min
- Error
- 38.2%
Observational data: associations, not effects.
Further findings
Agreement of CO estimation, arrhythmia (subgroup)
- Agreement of CO estimation, arrhythmia (subgroup) — Mean of differences
- 0.14 ± 0.90 L/min
- Agreement of CO estimation, arrhythmia (subgroup) — Error
- 35.4%
Agreement of CO estimation, low CO <5 L/min (subgroup)
- Mean of differences
- 0.26 ± 0.89 L/min
- Error
- 40.4%
Original publication
Agreement between cardiac output estimation by multi-beat analysis of arterial blood pressure waveforms and continuous thermodilution in post cardiac surgery intensive care unit patients. J Clin Monit Comput. Published 21 October 2022. doi:10.
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