Why the study?
Do noninvasive cardiac output measurements (thoracic bioimpedance and suprasternal Doppler ultrasound) accurately correlate with thermodilution in clinical patients?
Population
68 patients, including subgroups with mechanical ventilation, cardiac surgery, aortic surgery, dysrhythmias…
Comparison
Noninvasive cardiac output measurement using… vs Thermodilution (COtd)
Design
Cross-sectional
Authors
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Moderate correlations preclude routine clinical use of these noninvasive monitors; leaves open any subgroup role pending prospective validation.
Do noninvasive cardiac output measurements (thoracic bioimpedance and suprasternal Doppler ultrasound) accurately correlate with thermodilution in clinical patients?
Thoracic bioimpedance and suprasternal Doppler ultrasound show moderate overall correlation with thermodilution for measuring cardiac output, with better agreement in specific subgroups such as mechanically ventilated patients without recent cardiac or aortic surgery.
Wong et al. (1990) studied this question.
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