In this paper we discussed the influence of preliminary processing of the ultrasound Doppler signal on accuracy of the fetal heart rate estimation as well as on reliability of the FHR instantaneous variability assessment. We attempted to develop an optimal processing channel of US Doppler signal in order to measure the periodicity of fetal heart activity with accuracy as close as possible to th...

Interference of power line (PLI) (fundamental frequency and its harmonics) is usually present in biopotential measurements. Despite all countermeasures, the PLI still corrupts physiological signals, for example, electromyograms (EMG), electroencephalograms (EEG), and electrocardiograms (ECG). When analyzing the fetal ECG (fECG) recorded on the maternal abdomen, the PLI represents a particular s...

The electric fetal heart activity was firstly recorded as tiny deflections on maternal limb lead electrocardifogram (ECG) by Cremer [1], direct lead fetal ECG with needle electrode by Caldeyro-Barcia et al. [2] and with scalp lead clip electrode by Hon [3]. Indirect maternal abdominal lead fetal ECG (fECG) was recorded by Maeda and Nakano [4] and others. Intrapartum fetal heart rate (FHR) was m...

This paper evaluates the performance of some major ICA algorithms like Cardoso’s Joint Approximate Diagonalization of Eigen matrices (JADE), Bell and Sejnowski’s Infomax algorithm and Comon’s algorithm in a biomedical blind source separation problem. Independent signals representing Fetal ECG (FECG) and Maternal ECG (MECG) generated and then mixed linearly to simulate a recording of electrocard...

Objective This study aims to report our experience using the Monica AN24 (Monica Healthcare Ltd., Nottingham, United Kingdom), a maternal transabdominal fetal electrocardiographic monitor, in a case series of fetuses with arrhythmias. Study Design We recorded fetal electrocardiograms (fECGs) on subjects with fetal arrhythmias diagnosed by fetal echocardiogram. Fetal heart rate and rhythm were d...

Abstract Congenital heart disease (CHD) is a leading cause of infant death. To diagnose CHD, recordings from abdominal fetal electrocardiograms (fECG) can be used as non-invasive tool. However, it challenging to extract the signal fECG partly due lack data combining with ground truth for signal, which obtained by using scalp electrode during delivery. In this study, we present computational mod...

Non-invasive fetal ECG (FECG) shows promise as a diagnostic method to monitor health. However, extracting the cardiac signal remains challenge due low signal-to-noise ratio. An important factor is low-conducting layer which forms around fetus from week 28 of gestation called vernix caseosa (VC). We developed an anatomically detailed and biophysically accurate computational model pregnant torso ...