Abstract - IEEE Trans Biomed Eng 1995 Feb;42(2):224-30

An advanced signal processing technique for impedance cardiography.

Wang X, Sun HH, Van de Water JM. Department of Electrical and Computer Engineering, Drexel University, Philadelphia, PA 19104

A new design using the latest technique in signal processing, the time-frequency analysis method, was developed to process impedance cardiography signals. This technique, when used to determine the relevant calculation parameters, was found to be more accurate than conventional methods. It was shown to be advantageous in reducing ventilation artifacts and motion noise, resulting in greater accuracy. Its cardiac output values had a much better correlation coefficient when compared in the clinical setting to the standard thermodilution.

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