Magnetomyography combined with fetal magnetocardiography in the registration of uterine contractions

Abstract

Event Abstract Back to Event Magnetomyography combined with fetal magnetocardiography in the registration of uterine contractions Peter V. Leeuwen1*, Wolfgang Hatzmann2, Sven Schiermeier2 and Dietrich H. Grönemeyer1 1 University of Witten / Herdecke, Dept. of Radiology / Microtherapy, Germany 2 University of Witten / Herdecke, Dept. of Obstetrics, Germany Fetal heart rate and its variability (HRV) reflect not only fetal development and behavioral state but may also be indicative of fetal stress. Particularly toward the end of pregnancy, contractions of the uterus can influence fetal heart rate and HRV. Conventionally, fetal heart rate and uterine contractions are measured and observed using cardiotocography. Multichannel biomagnetic measurements offer the possibility to record both smooth muscle and cardiac muscle activity simultaneously with higher spatial and temporal resolution. Here we describe magnetomyographic and magnetocardiographic measurements acquired in a pregnant woman while experiencing intermittent contractions. Using a 61 channel biomagnetometer which covered the complete maternal abdomen, we recorded MMG and FMCG for 15 min at a sampling rate of 1 kHz and a bandpass of 1-200 Hz. Appropriate signal processing such as filtering, template matching and digital subtraction / averaging of signal components permitted the identification of signals associated with both uterine contractions as well as with fetal cardiac activity. Data analysis showed that broad band high frequency signals related to the contractions were consistently associated with rapid sustained increases in fetal heart rate and decreases in short-term heart rate variability. We conclude that MMG may identify episodes of uterine contraction and that their effect on fetal heart rate can be assessed simultaneously on the basis of FMCG. This combination of MMG and FMCG may thus aid in fetal monitoring. Conference: Biomag 2010 - 17th International Conference on Biomagnetism , Dubrovnik, Croatia, 28 Mar - 1 Apr, 2010. Presentation Type: Poster Presentation Topic: Fetal and neonatal biomagnetism Citation: Leeuwen PV, Hatzmann W, Schiermeier S and Grönemeyer DH (2010). Magnetomyography combined with fetal magnetocardiography in the registration of uterine contractions. Front. Neurosci. Conference Abstract: Biomag 2010 - 17th International Conference on Biomagnetism . doi: 10.3389/conf.fnins.2010.06.00097 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 23 Mar 2010; Published Online: 23 Mar 2010. * Correspondence: Peter V Leeuwen, University of Witten / Herdecke, Dept. of Radiology / Microtherapy, Herdecke, Germany, sci@van-leeuwen.de Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Peter V Leeuwen Wolfgang Hatzmann Sven Schiermeier Dietrich H Grönemeyer Google Peter V Leeuwen Wolfgang Hatzmann Sven Schiermeier Dietrich H Grönemeyer Google Scholar Peter V Leeuwen Wolfgang Hatzmann Sven Schiermeier Dietrich H Grönemeyer PubMed Peter V Leeuwen Wolfgang Hatzmann Sven Schiermeier Dietrich H Grönemeyer Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.