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Evaluating a Dynamic Trend in the Estimated Continuous Cardiac Output Calibrated With Invasive and Non-Invasive
Takashi Terada1, Ryoichi Ochiai1
1Department of Anaesthesiology, Toho University Omori Medical Centre, Tokyo, Japan.
Objective:
This study compared the estimated continuous cardiac output (esCCO) system and an arterial pressure-based CO (APCO) system. The goal of this study was to evaluate the dynamic trend of the esCCO calibrated with an invasive and non-invasive method.
Methods:
We retrospectively identified 12 cases with complete data for the two calibration methods. Two calibration methods were analysed and compared with APCO using polar plots.
Results:
Polar plotting revealed that the mean angular bias was 10.0°, and the radial limit of agreement was 37.1° when calibrated with the invasive method, while the mean angular bias was 3.5°, and the radial limit of agreement was 28.3° with the non-invasive method.
Conclusion:
This study suggested that the accuracy of a dynamic trend of esCCO may not be affected by the calibration methods, and the esCCO measurement by the non-invasive calibration method may be an effective device similar to that by the invasive calibration method.
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