Why the study?
The study was conducted to record and extract features of fetal cardiac activities using a semi-rigid prototype optically-pumped magnetometers sensor array.
Can a semi-rigid prototype bed-based array of optically-pumped magnetometers successfully record high-quality fetal magnetocardiograms and extract heart rate variability?
Can a semi-rigid prototype bed-based array of optically-pumped magnetometers successfully record high-quality fetal magnetocardiograms and extract heart rate variability?
A semi-rigid bed-based array of optically-pumped magnetometers safely and successfully recorded high-quality fetal magnetocardiograms, offering a potentially lower-cost and more comfortable alternative to traditional SQUID systems for monitoring fetal arrhythmias.
Prototype OPM array records fMCG; leaves open clinical validation for fetal monitoring.
OBJECTIVE: To record and extract features of fetal cardiac activities with a semi-rigid prototype optically-pumped magnetometers (OPM) sensor array. METHODS: Fetal magnetocardiography (fMCG) data were collected from 15 pregnant women between 28 and 40 weeks gestation. Mothers were lying flat in a customized bed with sensors touching their abdomen from below using a prototype grid. fMCG was extracted to perform standard fetal heart rate variability (FHRV) analysis. RESULTS: fMCG was observed in 13 of the 15 pregnant women. OPM FHRV indicators were in the range of previous SQUID studies. CONCLUSION: Semi-rigid prototype OPM system has the ability to record quality fMCG. fMCG is capable of identifying lethal cardiac rhythm disturbances in the fetus. Our novel application of OPM technology may lower costs and increase maternal comfort, thus expanding fMCG's generalizability.
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Escalona‐Vargas et al. (2024) studied this question.
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