Key result
Transoesophageal Doppler cardiac output estimation showed significant bias compared to thermodilution (mean difference 0.69 L/min after sternotomy; P<0.05), suggesting it cannot replace thermodilution.
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
Transoesophageal Doppler for cardiac output… vs Thermodilution technique for cardiac output…
Design
Cross-sectional
Authors
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Clinicians should retain thermodilution for cardiac output in CABG; cross-sectional data leaves open need for randomized validation.
Observational (n=24)
Does transoesophageal Doppler accurately estimate cardiac output compared to thermodilution in patients undergoing coronary artery bypass surgery?
Mean Difference: 0.69 (95% CI 0.08–1.3)
p-value: p=<0.05
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 (mean difference/bias) (MD 0.69 L min-1, 95% CI 0.08 to 1.3, p=<0.05). Transoesophageal Doppler cardiac output estimation showed significant bias compared to thermodilution (mean difference 0.69 L/min after sternotomy; P<0.05), suggesting it cannot replace thermodilution.