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Related Experiment Videos

Normal fetal motility: an overview.

J I P de Vries1, B F Fong

  • 1Department of Obstetrics and Gynaecology, Institute of Fundamental and Clinical Human Sciences, VU University Medical Center, Amsterdam, The Netherlands. jip.deVries@vumc.nl

Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology
|May 20, 2006
PubMed
Summary

This review synthesizes 35 years of ultrasound research on fetal motility, detailing developmental milestones and the relationship between fetal movements and well-being. It highlights reproducible movement patterns and their continuity after birth.

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Area of Science:

  • Prenatal Development
  • Fetal Physiology
  • Medical Ultrasound

Background:

  • Real-time two-dimensional sonography has been used for 35 years to study fetal motility.
  • Advancements in 4D sonography offer new possibilities for observing fetal movements.
  • Understanding normal fetal motility is crucial for assessing fetal well-being.

Purpose of the Study:

  • To provide an overview of current knowledge on normal fetal motility based on a comprehensive literature review.
  • To identify developmental milestones in fetal movement patterns.
  • To explore the relationship between fetal motility and other indicators of fetal condition.

Main Methods:

  • A literature search was conducted using keywords related to fetal movements and ultrasound from 1970 onwards.

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  • Inclusion criteria focused on human studies using real-time sonography.
  • Articles were screened for specific motor assessment procedures, including specific movement patterns (SMPs), qualitative and quantitative aspects, behavioral states, observation duration, and gestational age.

    • Main Results:

    • 109 articles examining 9862 fetuses were identified.
    • Most studies focused on the emergence and development of SMPs, with a significant portion including quantification and behavioral state assessment.
    • Key findings include age-related emergence of SMPs and behavioral states, reproducible movement quality, age-related quantitative trends, continuity of motility post-birth, and strong correlations with heart rate variability and blood flow parameters.

    Conclusions:

    • Comparable assessment procedures provide significant insight into fetal motility development and its relationship with other fetal parameters.
    • Future research should advocate for assessment procedures that include well-defined SMPs, qualitative/quantitative aspects of SMPs and non-SMPs, and age-dependent observation periods.
    • Fetal motility is a dynamic process closely linked to overall fetal health and development.