4.5 Article

Developing fetal motor-cardiovascular coordination analyzed from multi-channel magnetocardiography

期刊

PHYSIOLOGICAL MEASUREMENT
卷 35, 期 10, 页码 1943-1959

出版社

IOP PUBLISHING LTD
DOI: 10.1088/0967-3334/35/10/1943

关键词

fetal development; movement related heart rate accelerations; fetal magnetocardiography

资金

  1. Deutsche Forschungsgemeinschaft [DFG: Ho 1634/12-2, Schn 775/2-3]

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Fetal movements (FM) related heart rate accelerations (AC) are an important maturation criterion. Since Doppler-based time resolution is not sufficient for accompanying heart rate variability analysis, the work is aimed at a comprehensive FM-AC analysis using magnetocardiographic recordings from fetuses during sleep. We identify FM and AC by independent component analysis and automatic recognition algorithms. We investigate associations between FM and AC of different magnitude by means of event coincidence and time series cross-correlation over the maturation period of 21-40 weeks of gestation (WGA). FM related AC appear with increasing AC magnitude and WGA. Vice versa, AC related FM appear independent of WGA, but more frequently with increasing AC amplitude. The FM-AC correlation exists already at 21 WGA and further increases with WGA while the variability of its time delay decreases. Hence, FM and AC are clearly associated over the whole investigated maturation period. The increase of FM related AC runs parallel to the increasing AC magnitude. The MCG methodology was confirmed and results from previous Doppler-based analyses reproduced. Hence, MCG recordings allow the collective analysis of heart rate variability based maturation indices and FM related AC. This synergism may improve the diagnosis of fetal developmental disorders.

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