Abstract:
BACKGROUND:Pregnant women's sleep disturbance due to fetal movement is well known. Fetal movement is thought to be an index of fetal well-being. However, as there has never been a way to easily and reliably record fetal movement, psychophysiological studies of pregnant women's sleep disturbance and fetal well-being have not been done. AIMS:To solve these methodological issues, we developed a new sensor with electrostatic capacity that can pick up acceleration of fetal movement. METHODS AND RESULTS:Experiment I: We verified the reliability of our fetal movement recording system. Thirty-two pregnant women (from 19 to 39 weeks of gestation) were asked to lie down on a bed for about 1 h and to press a button as a subjective marker when they felt fetal movement. We simultaneously recorded maternal polysonograms and fetal movement from the mothers' abdomens using a Medilog recorder. The mean of prevalence-adjusted bias-adjusted kappa for agreements, based on time between fetal movement signals recorded and subjective maternal markers, was substantial at 0.75. Experiment II: We recorded seven pregnant women's polysonograms and fetal movement simultaneously during all-night sleep at home using our sensor during weeks 33 and 36 of gestation. We succeeded in recording maternal micro-arousals evoked by fetal movement. The mean value of the number of micro-arousals at 33 weeks was slightly larger than that at 36 weeks. CONCLUSIONS:There was a high agreement between subjective maternal markers and fetal movement. Our recording system using the new sensor can be used for home monitoring of fetal movement.
journal_name
Early Hum Devjournal_title
Early human developmentauthors
Nishihara K,Horiuchi S,Eto H,Honda Mdoi
10.1016/j.earlhumdev.2008.03.001subject
Has Abstractpub_date
2008-09-01 00:00:00pages
595-603issue
9eissn
0378-3782issn
1872-6232pii
S0378-3782(08)00051-0journal_volume
84pub_type
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journal_title:Early human development
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journal_title:Early human development
pub_type: 杂志文章
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