Abstract
Objective: In this study, we wanted to model the emergence of coupling between fetal cardiac and somatic activity in normal and at-risk fetuses. Study Design: One hundred six fetuses of uncomplicated pregnancies were longitudinally monitored at 20, 24, 28, 32, 36, and 38 weeks of gestation by using a fetal actocardiograph and computerized data collection. Twenty-six fetuses of complicated pregnancies were also included. Statistical time series analysis techniques were used to examine the relation between fetal movement and fetal heart rate. Results: A linear increase was found in the magnitude of the cross-correlation function between fetal movement and fetal heart rate as gestation advanced, with coalescence around a peak lag of 5 seconds by 32 weeks. Fetuses that delivered before term evidenced accelerated fetal movement and fetal heart rate coupling, whereas fetuses affected by deleterious conditions showed a decline in developmental trajectory. Conclusions: The cross-correlation between fetal cardiac and somatic activity is an indicator of neuroregulation in human fetuses.
Original language | English (US) |
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Pages (from-to) | 1421-1428 |
Number of pages | 8 |
Journal | American journal of obstetrics and gynecology |
Volume | 185 |
Issue number | 6 |
DOIs | |
State | Published - 2001 |
Keywords
- Fetal heart rate
- Fetal movement
- Neurologic development
- Preterm birth
ASJC Scopus subject areas
- Obstetrics and Gynecology