Key result
A non-invasive partial-rebreathing technique using CO2 was a valid alternative to thermodilution for cardiac output determination, with a bias of 0.050 l/min (95% CI -0.024 to 0.125 l/min).
Why the study?
Does a non-invasive partial-rebreathing technique using CO2 accurately determine cardiac output compared to thermodilution in sedated, mechanically ventilated adults following elective cardiac surgery?
Population
41 sedated, mechanically ventilated adults following elective cardiac surgery
Comparison
Derivative Fick technique using carbon dioxide… vs Thermodilution pulmonary artery catheter (CO)…
Design
Cross-sectional
Follow-up
minimum period of two hours
Authors
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Supports non-invasive CO2 cardiac output monitoring post-surgery; leaves open routine adoption without randomized confirmation.
Observational (n=41)
Does a non-invasive partial-rebreathing technique using CO2 accurately determine cardiac output compared to thermodilution in sedated, mechanically ventilated adults following elective cardiac surgery?
Mean Difference: 0.05 (95% CI -0.024–0.125)
A non-invasive partial-rebreathing technique using CO2 provides a valid alternative to thermodilution for measuring cardiac output in mechanically ventilated patients post-cardiac surgery.
Binder et al. (2001) conducted an observational in elective cardiac surgery (n=41). Partial-rebreathing technique using carbon dioxide vs. Thermodilution pulmonary artery catheter was evaluated on Cardiac output determination (Bias 0.050 l/min, 95% CI -0.024 to 0.125). A non-invasive partial-rebreathing technique using CO2 was a valid alternative to thermodilution for cardiac output determination, with a bias of 0.050 l/min (95% CI -0.024 to 0.125 l/min).
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