Detection of Fetal Arrhythmia by Using Optically Pumped Magnetometers

Batie, Margo; Bitant, Sarah; Strasburger, Janette F.; Shah, Vishal; Alem, Orang; Wakai, Ronald T.

doi:10.1016/j.jacep.2017.08.009

Cited by 21 publications

(18 citation statements)

References 2 publications

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“…Although fetal magnetocardiography is an effective and promising non-invasive technique to assess fetal cardiac electrical impulses, cardiac Doppler ultrasound is currently the most commonly used tool in a clinical setting [7]. The assessment of the relationships between atrial and ventricular contractions is crucial for an accurate diagnosis of fetal arrhythmias by using M-mode and Doppler ultrasound (fig 2).…”

Section: Discussionmentioning

confidence: 99%

Fetal supraventricular tachycardia at 12 weeks of gestation: diagnosis and follow up. A case report

et al. 2019

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This report describes a case of fetal supraventricular tachycardia (SVT) diagnosed at 12 weeks of gestation in a pregnant woman with diabetes mellitus. Transplacental digoxin therapy administered orally to the mother was unsuccessful. Subsequently, sotalol was added to digoxin to achieve fetal heart rate (HR) control and the conversion to sinus rhythm was achieved. The fetal HR remained stable until term, and a healthy male baby was born. The newborn electrocardiogram showed sinus rhythm with normal PR and QTc intervals. When the newborn was stable, he was discharged with propanolol. Sustained SVT is extremely rare during the first trimester. The goal of treatment in utero is the conversion to sinus rhythm or reduction of the ventricular rate to tolerable levels, preventing or even reversing fetal hydrops.

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Section: Discussionmentioning

confidence: 99%

Fetal supraventricular tachycardia at 12 weeks of gestation: diagnosis and follow up. A case report

et al. 2019

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“…The heart's magnetic field strength lies at amplitudes lower than 100 pT (which is about 500,000 times smaller than the earth's magnetic field's amplitude) and at frequencies between 0.01 and 100 Hz [14,17]. Currently, biomagnetic signals such as the heart's magnetic field can be measured with complex sensor technology such as superconducting quantum interference devices (SQUID) [18] or optically pumped magnetometers (OPMs) [19]. SQUID sensors require liquid cooling to operate and necessitate a magnetically shielded environment.…”

Section: Magnetoelectric Sensors For Medical Applicationsmentioning

confidence: 99%

Teaching Magnetoelectric Sensing to Secondary School Students—Considerations for Educational STEM Outreach

Broß

Enzingmüller

Parchmann

et al. 2021

Sensors

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A major challenge in modern society is the need to increase awareness and excitement with regard to science, technology, engineering and mathematics (STEM) and related careers directly or among peers and parents in order to attract future generations of scientists and engineers. The numbers of students aiming for an engineering degree are low compared to the options available and the workforce needed. This may, in part, be due to a traditional lack of instruction in this area in secondary school curricula. In this regard, STEM outreach programs can complement formal learning settings and help to promote engineering as well as science to school students. In a long-term outreach collaboration with scientists and engineers, we developed an outreach program in the field of magnetoelectric sensing that includes an out-of-school project day and various accompanying teaching materials. In this article, we motivate the relevance of the topic for educational outreach, share the rationales, objectives and aims, models and implementation strategies of our program and provide practical advice for those interested in outreach in the field of magnetoelectric sensing.

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“…As noted by Hornberger et al, 26 , "Fetal magnetocardiography (fMCG), the magnetic analog of fetal ECG, is at this time the most effective means of assessing fetal rhythms." It enables the in-utero diagnoses and monitoring of congenital heart abnormalities 27 . The primary technical challenge of fMCG arises from the relative weakness of the fMCG signal in comparison to background fields -especially the maternal MCG.…”

Section: Gradiometers For Fmcgmentioning

confidence: 99%

Characterizing atomic magnetic gradiometers for fetal magnetocardiography

Sulai

DeLand

Bulatowicz

et al. 2019

Review of Scientific Instruments

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Atomic magnetometers (AMs) offer many advantages over superconducting quantum interference devices (SQUIDs) due to, among other things, having comparable sensitivity while not requiring cryogenics. One of the major limitations of AMs is the challenge of configuring them as gradiometers. We report the development of a spin-exchange relaxation free (SERF) vector atomic magnetic gradiometer with sensitivity of 3 fT cm −1 Hz −1/2 and common mode rejection ratio (CMRR) > 150 in the band from DC to 100 Hz. We introduce a background suppression figure of merit for characterizing the performance of gradiometers. It allows for optimally setting the measurement baseline, and for quickly assessing the advantage, if any, of performing a measurement in gradiometric mode. As an application, we consider the problem of fetal magnetocardiography (fMCG) detection in the presence of a large background maternal MCG signal.

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Detection of Fetal Arrhythmia by Using Optically Pumped Magnetometers

Cited by 21 publications

References 2 publications

Fetal supraventricular tachycardia at 12 weeks of gestation: diagnosis and follow up. A case report

Fetal supraventricular tachycardia at 12 weeks of gestation: diagnosis and follow up. A case report

Teaching Magnetoelectric Sensing to Secondary School Students—Considerations for Educational STEM Outreach

Characterizing atomic magnetic gradiometers for fetal magnetocardiography

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