PMID: 9556874Apr 29, 1998Paper

Prenatal recording of fetal heart action with magnetocardiography

Zeitschrift für Kardiologie
T MenéndezK Bachmann

Abstract

Fetal magnetocardiography (fMCG) registers the magnetic field generated by the fetal heart. In contrast to the fetal electrocardiogram, fECG permits non-invasive registration of fetal heart activity and documentation of all parts of the PQRST-wave-forms from the second trimenon onwards. This facilitates the determination of cardiac time intervals and establishment of reference values for different stages of pregnancy. We examined 53 women in 104 recordings from the 10th week of gestation onwards (1 to 10 recordings per individual). The fMCG (37 magnetic channels, sampling rate 1024 Hz, bandwidth 1-200 Hz) was recorded non-invasively over the mother's abdomen in a magnetically shielded room. Registration of fetal heart beats was generally successful from the 20/21th week of gestation onwards. In a few cases, fetal heart beats could be registered as early as in the 16th week. Cardiac time intervals and amplitudes of fMCG increased concordantly with fetal growth. Mean P wave duration increased from 31 to 49 ms (p < 0.05), PQ interval from 95 to 107 ms (n.s.) and QRS duration from 36 to 52 ms (p < 0.01). The mean amplitudes of the P and R waves also increased. FMCG, furthermore permits a prenatal diagnosis of fetal cardiac arrhythm...Continue Reading

Citations

Dec 22, 1998·Biomedizinische Technik. Biomedical Engineering·T MenéndezW G Daniel
May 11, 2004·Physiological Measurement·P van LeeuwenD Grönemeyer
Aug 30, 2000·Pacing and Clinical Electrophysiology : PACE·T MenéndezW G Daniel
Nov 19, 2003·Pacing and Clinical Electrophysiology : PACE·Barbara GrimmUwe Schneider
Jun 5, 2002·Medical & Biological Engineering & Computing·A KandoriK Tsukada

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