Key result
The proposed two-tier SVM and polynomial network approach extracted fetal ECG from a single maternal abdominal record with signal quality equivalent or superior to multichannel-based mechanisms.
Why the study?
Non-invasive fetal ECG recordings from the maternal abdomen are generally overpowered by noise and the maternal ECG, requiring effective processing to extract a clean fetal signal from a single lead.
A novel two-tier algorithm using smoothing filters and polynomial networks/SVM can successfully extract high-quality fetal ECG signals from a single maternal abdominal record, potentially simplifying non-invasive fetal monitoring.
Offers a potential pathway to simplify non-invasive fetal monitoring; leaves open whether.
The electrical activity of the foetal cardiac muscles is known as foetal ECG (FECG), and it can provide crucial details on the health of the fetus's heart. A pregnant woman's belly can be used to non-invasively capture this signal during pregnancy. However, since additional sources of noise, including the maternal ECG generally overpower the FECG recording, it would be ineffective. However, a clean FECG may be retrieved from the abdominal recording if it is correctly processed, and FECG can be used to evaluate the functioning of the foetal heart. In order to extract foetal electrocardiogram (ECG) from a single abdomen record, a unique two-tier approach is presented in this work. The abdominal signal is processed through a smoothing filter in the first layer of the proposed approach in order to determine the maternal ECG's estimated value. Findings on synthetic and actual abdominal ECG data demonstrate that the intended technique can extract foetal ECG with signal quality equivalent or superior to that retrieved by multichannel based mechanisms. The anticipated maternal ECG is then nonlinearly matched with the abdominal signal through polynomial networks.
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Himani Sivaraman (2019) studied Fetal ECG extraction. Two-tier approach using SVM and polynomial networks vs. Multichannel based mechanisms was evaluated on Signal quality of extracted fetal ECG. The proposed two-tier SVM and polynomial network approach extracted fetal ECG from a single maternal abdominal record with signal quality equivalent or superior to multichannel-based mechanisms.
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