[Fetal magnetocardiography].

Area of Science:

• Biophysics
• Cardiology
• Prenatal Medicine

Context:

• Fetal magnetocardiography (FMCG) is an emerging noninvasive technique for prenatal surveillance.
• It measures the magnetic fields generated by fetal heart currents, offering advantages over fetal electrocardiography (fECG).
• FMCG provides a higher signal-to-noise ratio and can be acquired earlier in pregnancy.

Purpose:

• To evaluate the utility of FMCG for assessing fetal cardiac function and development.
• To explore FMCG's capability in detecting arrhythmias and monitoring autonomic nervous system maturation.
• To investigate the potential of FMCG as a diagnostic tool in prenatal care.

Summary:

• FMCG utilizes a biomagnetometer to register fetal heart magnetic fields, allowing for precise measurements of heart rate parameters, signal morphology, and cardiac time intervals.
• The method has successfully identified various fetal arrhythmias, including supraventricular and ventricular ectopies, and atrial flutter.
• Analysis of FMCG data reveals increases in heart rate variability and complexity with gestational age, correlating with autonomic nervous system activity and respiration.

Impact:

• FMCG demonstrates significant potential for examining the fetal conductive system, congenital defects, and fetal well-being.
• Early results in pathological cases suggest FMCG could become a valuable tool in prenatal diagnostics.
• Further research with improved instrumentation and larger multicenter studies is needed to establish FMCG in clinical fetal surveillance.