Non-invasive fetal electrocardiography (ECG) can be used for prolonged monitoring of the fetal heart rate (FHR). However, the signal-to-noise-ratio (SNR) of non-invasive ECG recordings is often insufficient for reliable detection of the FHR. To overcome this problem, source separation techniques can be used to enhance the fetal ECG. This study uses a physiology-based source separation (PBSS) technique that has already been demonstrated to outperform widely used blind source separation techniques. Despite the relatively good performance of PBSS in enhancing the fetal ECG, PBSS is still susceptible to artifacts. In this study an augmented PBSS technique is developed to reduce the influence of artifacts. The performance of the developed method is compared to PBSS on multi-channel non-invasive fetal ECG recordings. Based on this comparison, the developed method is shown to outperform PBSS for the enhancement of the fetal ECG.
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http://dx.doi.org/10.1109/EMBC.2013.6609923 | DOI Listing |
Ginekol Pol
January 2025
Department of Obstetrics and Gynecology Didactics, Faculty of Health Sciences, Medical University of Warsaw, Poland.
Objectives: Cardiotocography (KTG) is widely used for continuous or intermittent assessment of fetal heart function. This study aimed to compare the effects of continuous and intermittent KTG during labour on selected variables.
Material And Methods: In a retrospective study, 4172 medical records of Warsaw Hospital (Poland) patients were analysed.
Cureus
December 2024
Obstetrics and Gynecology, Cape Fear Valley Medical Center, Fayetteville, USA.
Hyperemesis gravidarum (HG) is a severe condition marked by intense nausea and vomiting during pregnancy, which is different from typical morning sickness. It is marked by weight loss exceeding 5% of pre-pregnancy weight, ketonuria, dehydration, electrolyte imbalances, and in some cases, arrhythmias - primarily linked to electrolyte disturbances. Treatment typically involves conservative measures such as small, bland meals, medications like metoclopramide and ondansetron, and correction of electrolyte abnormalities.
View Article and Find Full Text PDFJ Autoimmun
January 2025
Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark; Department of Cardiology, Copenhagen University Hospital, Herlev-Gentofte Hospital, Copenhagen, Denmark.
Introduction: Maternal autoimmune systemic connective tissue diseases (CTDs) and their related antibodies have been associated with adverse fetal outcomes, including complete heart block. In this study, we assessed the association between maternal CTD or vasculitis and neonatal electrocardiographic (ECG) parameters.
Methods: Our study population was drawn from the Copenhagen Baby Heart Study (CBHS), a prospective, population-based cohort study open to all neonates born in the Copenhagen area.
Biomed Phys Eng Express
January 2025
Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.
Fetal phonocardiography is a well-known auscultation technique for evaluation of fetal health. However, murmurs that are synchronous with the maternal heartbeat can often be heard while listening to fetal heart sounds. Maternal placental murmurs (MPM) could be used to detect maternal cardiovascular and placental abnormalities, but the recorded MPMs are often contaminated by ambient interference and noise.
View Article and Find Full Text PDFAnn Noninvasive Electrocardiol
January 2025
Division of Cardiology, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Background: Electrocardiograms (EKGs) are routinely performed in pregnant patients with pre-existing cardiovascular disease. However, in pregnant patients with congenital heart disease (CHD), EKG changes during gestation have not been explored.
Methods: We performed a retrospective study of pregnant patients with CHD enrolled in the STORCC initiative.
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