Key result
Transoesophageal Doppler cardiac output estimation showed significant bias compared to thermodilution (up to 0.69 L/min, P<0.05), suggesting it cannot replace the thermodilution method.
Why the study?
Does transoesophageal Doppler accurately estimate cardiac output compared to thermodilution in patients undergoing coronary artery bypass surgery?
Population
24 patients undergoing coronary artery bypass surgery
Comparison
Cardiac output determination by a new… vs Cardiac output estimation by thermodilution…
Design
Cross-sectional
Follow-up
Intraoperative
Authors
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Caution against replacing thermodilution with transoesophageal Doppler in CABG; leaves open need for prospective validation.
Observational (n=24)
Does transoesophageal Doppler accurately estimate cardiac output compared to thermodilution in patients undergoing coronary artery bypass surgery?
Mean Difference: 0.38 (95% CI -0.06–0.81)
Transoesophageal Doppler cardiac output estimation shows significant bias and wide limits of agreement compared to thermodilution, suggesting it cannot replace the thermodilution method.
Keyl et al. (1996) conducted an observational in Coronary artery bypass surgery (n=24). Transoesophageal Doppler (OD) vs. Thermodilution (TD) was evaluated on Agreement between ODCO and TDCO estimations (bias/mean difference) (MD 0.38, 95% CI -0.06 to 0.81). Transoesophageal Doppler cardiac output estimation showed significant bias compared to thermodilution (up to 0.69 L/min, P<0.05), suggesting it cannot replace the thermodilution method.
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