scholarly journals Extracting Fetal Electrocardiogram from Being Pregnancy Based on Nonlinear Projection

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Truong Quang Dang Khoa ◽  
Ho Huu Minh Tam ◽  
Vo Van Toi
Keyword(s):  
Fetal Heart ◽  
Well Being ◽  
Projection Technique ◽  
Fetal Electrocardiogram ◽  
Fetal Ecg ◽  
Nonlinear Projection ◽  
Chaotic Signals ◽  
Space Projection ◽  
Noise Contamination ◽  
Comparable Amplitude

Fetal heart rate extraction from the abdominal ECG is of great importance due to the information that carries in assessing appropriately the fetus well-being during pregnancy. In this paper, we describe a method to suppress the maternal signal and noise contamination to discover the fetal signal in a single-lead fetal ECG recordings. We use a locally linear phase space projection technique which has been used for noise reduction in deterministically chaotic signals. Henceforth, this method is capable of extracting fetal signal even when noise and fetal component are of comparable amplitude. The result is much better if the noise is much smaller (Pwave andTwave can be discovered).

scholarly journals To compare intrapartum cardiotocographic (CTG) recording with conventional intermittent fetal heart auscultation during labor

2014 ◽  
Vol 2 (03) ◽  
pp. 76-79
Author(s):  
Isha Bansal ◽  
Richa Kansal ◽  
R. Mahendru ◽  
Sunita Siwach ◽  
Deepak Singla ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Blood Gas Analysis ◽  
Well Being ◽  
Gas Analysis ◽  
Non Invasive ◽  
Fetal Ecg ◽  
Invasive Techniques ◽  
Heart Auscultation

Standard evaluation of fetal well-being during labor includes the periodic assessment of the fetal heart rate (FHR), its pattern and response to intrapartum stimuli and events. Effective methods of evaluation and meaningful interpretation of FHR data range from non-invasive techniques like Intermittent Auscultation, continuous electronic fetal heart rate (FHR) monitoring to invasive techniques of fetal blood gas analysis and fetal ECG.

scholarly journals Monitoring Fetal Heart Rate during Pregnancy: Contributions from Advanced Signal Processing and Wearable Technology

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Maria G. Signorini ◽  
Andrea Fanelli ◽  
Giovanni Magenes
Keyword(s):  
Heart Rate ◽  
Signal Processing ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Linear Time ◽  
Technological Development ◽  
Fetal Monitoring ◽  
Well Being ◽  
Clinical State ◽  
Fetal Ecg

Monitoring procedures are the basis to evaluate the clinical state of patients and to assess changes in their conditions, thus providing necessary interventions in time. Both these two objectives can be achieved by integrating technological development with methodological tools, thus allowing accurate classification and extraction of useful diagnostic information. The paper is focused on monitoring procedures applied to fetal heart rate variability (FHRV) signals, collected during pregnancy, in order to assess fetal well-being. The use of linear time and frequency techniques as well as the computation of non linear indices can contribute to enhancing the diagnostic power and reliability of fetal monitoring. The paper shows how advanced signal processing approaches can contribute to developing new diagnostic and classification indices. Their usefulness is evaluated by comparing two selected populations: normal fetuses and intra uterine growth restricted (IUGR) fetuses. Results show that the computation of different indices on FHRV signals, either linear and nonlinear, gives helpful indications to describe pathophysiological mechanisms involved in the cardiovascular and neural system controlling the fetal heart. As a further contribution, the paper briefly describes how the introduction of wearable systems for fetal ECG recording could provide new technological solutions improving the quality and usability of prenatal monitoring.

scholarly journals An Efficient Adaptive Filter for Fetal ECG Extraction Using Neural Network

2019 ◽  
Vol 28 (4) ◽  
pp. 589-600 ◽  
Author(s):  
Abdullah Mohammed Kaleem ◽  
Rajendra D. Kokate
Keyword(s):  
Neural Network ◽  
Adaptive Filter ◽  
Body Surface ◽  
Fetal Heart ◽  
The State ◽  
Fetal Electrocardiogram ◽  
Electrical Signals ◽  
Critical Data ◽  
Fetal Ecg

Abstract Fetal electrocardiogram checking is a strategy for acquiring critical data about the state of the fetus during pregnancy and labor. This is done by measuring electrical signals created by the fetal heart as measured from multichannel potential recordings on the mother’s body surface. In any case, extraction of fetal signal is difficult because the signal is marred by the mother’s heartbeat signal. Subsequently, in this paper, a powerful versatile filtering strategy is utilized to eliminate the mother’s heartbeat signal with the specific end goal of extricating the fetal signal. The proposed procedure was executed in the working stage of MATLAB and the execution results were investigated.

scholarly journals Music to My Ears: A Material-semiotic Analysis of Fetal Heart Sounds in Midwifery Prenatal Care

2021 ◽  
pp. 016224392110051
Author(s):  
Annekatrin Skeide
Keyword(s):  
Social Sciences ◽  
Prenatal Care ◽  
Fetal Heart ◽  
Well Being ◽  
Analytical Tool ◽  
Semiotic Analysis ◽  
Parental Love ◽  
The Social ◽  
Care Practices ◽  
The Aesthetic

Unlike sonographic examinations, sonic fetal heartbeat monitoring has received relatively little attention from scholars in the social sciences. Using the case of fetal heartbeat monitoring as part of midwifery prenatal care in Germany, this contribution introduces music as an analytical tool for exploring the aesthetic dimensions of obstetrical surveillance practices. Based on ethnographic stories, three orchestrations are compared in which three different instruments help audiences to listen to what becomes fetal heartbeat music and to qualify fetal and pregnant lives in relation to each other. In the Doppler-based orchestration, audible heartbeat music is taken as a sign of a child in need of parental love and care cultivated to listen. The Pinard horn makes esoteric fetal music that can be appreciated by the midwife as a skilled instrumentalist alone and helps to enact a child hidden in the belly. The cardiotocograph brings about soothing music and a reassuring relationship with a child but also durable scripts of juridical beauty. This material-semiotic analysis amplifies how well-being is shaped in midwifery prenatal care practices.

scholarly journals Non-Invasive Fetal Electrocardiogram Monitoring Techniques: Potential and Future Research Opportunities in Smart Textiles

Signals ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 392-412
Author(s):  
Geetika Aggarwal ◽  
Yang Wei
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Skin Penetration ◽  
Future Research ◽  
Fetal Electrocardiogram ◽  
Smart Textiles ◽  
Non Invasive ◽  
Future Research Directions ◽  
Electrocardiogram Monitoring

During the pregnancy, fetal electrocardiogram (FECG) is deployed to analyze fetal heart rate (FHR) of the fetus to indicate the growth and health of the fetus to determine any abnormalities and prevent diseases. The fetal electrocardiogram monitoring can be carried out either invasively by placing the electrodes on the scalp of the fetus, involving the skin penetration and the risk of infection, or non-invasively by recording the fetal heart rate signal from the mother’s abdomen through a placement of electrodes deploying portable, wearable devices. Non-invasive fetal electrocardiogram (NIFECG) is an evolving technology in fetal surveillance because of the comfort to the pregnant women and being achieved remotely, specifically in the unprecedented circumstances such as pandemic or COVID-19. Textiles have been at the heart of human technological progress for thousands of years, with textile developments closely tied to key inventions that have shaped societies. The relatively recent invention of smart textiles is set to push boundaries again and has already opened the potential for garments relevant to medicine, and health monitoring. This paper aims to discuss the different technologies and methods used in non-invasive fetal electrocardiogram (NIFECG) monitoring as well as the potential and future research directions of NIFECG in the smart textiles area.

scholarly journals Non-Adaptive Methods for Fetal ECG Signal Processing: A Review and Appraisal

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3648 ◽  
Author(s):  
Rene Jaros ◽  
Radek Martinek ◽  
Radana Kahankova
Keyword(s):  
Signal Processing ◽  
Wavelet Transforms ◽  
Principal Component ◽  
Fetal Monitoring ◽  
Adaptive Methods ◽  
Component Analysis ◽  
Adaptive Signal Processing ◽  
Extensive Literature ◽  
Fetal Electrocardiogram ◽  
Fetal Ecg

Fetal electrocardiography is among the most promising methods of modern electronic fetal monitoring. However, before they can be fully deployed in the clinical practice as a gold standard, the challenges associated with the signal quality must be solved. During the last two decades, a great amount of articles dealing with improving the quality of the fetal electrocardiogram signal acquired from the abdominal recordings have been introduced. This article aims to present an extensive literature survey of different non-adaptive signal processing methods applied for fetal electrocardiogram extraction and enhancement. It is limiting that a different non-adaptive method works well for each type of signal, but independent component analysis, principal component analysis and wavelet transforms are the most commonly published methods of signal processing and have good accuracy and speed of algorithms.

scholarly journals Noninvasive Recording of True-to-Form Fetal ECG during the Third Trimester of Pregnancy

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Istvan Peterfi ◽  
Lorand Kellenyi ◽  
Andras Szilagyi
Keyword(s):  
Data Collection ◽  
Present Method ◽  
Fetal Heart ◽  
Third Trimester ◽  
Significant Information ◽  
The Third ◽  
Fetal Ecg ◽  
Cheap Method ◽  
Electrophysiological Measurement ◽  
Fetal Electrocardiography

Objective. The aim of the study was to develop a complex electrophysiological measurement system (hardware and software) which uses the methods of electrophysiology and provides significant information about the intrauterine status of the fetus, intending to obtain true-to-form, morphologically evaluated fetal ECG from transabdominal maternal lead.Results. The present method contains many novel ideas that allow creating true-to-form noninvasive fetal ECG in the third trimester of the pregnancy in 80% of the cases. Such ideas are the telemetric data collection, the “cleanse” of the real time recording from the maternal ECG, and the use of the cardiotocograph (CTG) that allows identifying the fetal heart events. The advantage of this developed system is that it does not require any qualified staff, because both the extraction of the information from the abdominal recording and the processing of the data are automatic.Discussion. Although the idea of a noninvasive fetal electrocardiography is more than 100 years old still there is no simple, effective, and cheap method available that would enable an extensive use. This developed system can be used in the third trimester of the pregnancy efficiently. It can produce true-to-form fetal ECGs with amplitude less than 10 µV.

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