January 11, 2018Anesthesia & Analgesia
Comparing Methods for Cardiac Output: Intraoperatively Doppler-Derived Cardiac Output Measured With 3-Dimensional Echocardiography Is Not Interchangeable With Cardiac Output by Pulmonary Catheter Thermodilution
Why the study?
Is Doppler-derived cardiac output measured with 3D TEE interchangeable with cardiac output by pulmonary artery catheter thermodilution in patients undergoing elective cardiac surgery?
Population
61 patients scheduled for elective heart surgery. Exclusion criteria: chronic atrial fibrillation, left…
Comparison
Doppler-derived cardiac output measured with… vs Cardiac output measured by pulmonary artery…
Design
Cross-sectional, blinded post hoc analyses of stored images
Authors
Discussion
Loading...
Member takes
Implication
Caution against assuming 3D TEE Doppler CO interchangeable with thermodilution in cardiac surgery; leaves open need for prospective validation.
Structured PICO
Is Doppler-derived cardiac output measured with 3D TEE interchangeable with cardiac output by pulmonary artery catheter thermodilution in patients undergoing elective cardiac surgery?
P
Population
61 patients scheduled for elective heart surgery (coronary artery bypass surgery N=42, aortic valve replacement N=19). Exclusion criteria: chronic atrial fibrillation, left ventricular ejection fraction below 0.40, and intracardiac shunts.
I
Intervention
Doppler-derived cardiac output measured with 3-dimensional transesophageal echocardiography (3D TEE)
C
Comparator
Cardiac output measured by pulmonary artery catheter thermodilution
O
Outcome
Agreement between measurement methods assessed by bias, limits of agreement, and percentage errorsurrogate
Doppler-derived cardiac output by 3D TEE has wide limits of agreement compared to thermodilution and cannot be considered interchangeable in clinical practice.
Cite This Study
Graeser et al. (2018) studied this question.