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Sequential separation of twin pregnancy electrocardiograms

Kotas M., Leski J. M., Wrobel J.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2016

Vol. 64, nr 1

91--101

We propose to tackle the problem of maternal abdominal electric signals decomposition with a combined application of independent component analysis and projective or adaptive filtering. The developed method is employed to process the four-channel abdominal signals recorded during twin pregnancy. These signals are complicated mixtures of the maternal ECG, the ECGs of the fetal twins and noise of various origin. Although the independent component analysis cannot separate the respective signals, the proposed combination of the methods deals with this task successfully. A simulation experiment confirms high efficiency of this approach.

Separation of abdominal fetal electrocardiograms in twin pregnancy

Kotas M., Jeżewski J., Matonia A., Kupka T.

Journal of Medical Informatics & Technologies

2008

Vol. 12

83--89

A combined application of independent component analysis and projective filtering of the time-aligned ECG beats is proposed to solve the problem of fetal ECG extraction from multi-channel maternal abdominal electric signals. The developed method is employed to process the four-channel abdominal signals recorded during twin pregnancy. The signals are complicated mixtures of the maternal ECG, the ECGs of the fetal twins and noise of other origin. The independent component analysis cannot separate the respective signals, but the proposed combination of the methods allows to suppress the maternal ECG and when the level of noise is low it leads to an effective separation of the twins' signals.