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Related Experiment Videos

Standards for measuring umbilical cord length.

J L Mills, E E Harley, A C Moessinger

    Placenta
    |October 1, 1983
    PubMed
    Summary

    This study analyzed umbilical cord length in over 18,000 infants, establishing growth charts. Results show significant differences between sexes and continuous growth during the third trimester.

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    Area of Science:

    • Perinatology
    • Fetal Development
    • Neonatal Research

    Background:

    • Umbilical cord length is a critical indicator of fetal well-being.
    • Establishing normative data for umbilical cord length is essential for clinical practice.
    • Variations in cord length can be associated with adverse pregnancy outcomes.

    Purpose of the Study:

    • To construct normative growth charts for umbilical cord length in the US white population.
    • To investigate the relationship between umbilical cord length and gestational age.
    • To identify sex-based differences in umbilical cord length.

    Main Methods:

    • Measurement of umbilical cord length in a large cohort of neonates (9620 males, 9068 females).
    • Statistical analysis to correlate cord length with gestational age and infant sex.
    • Development of growth charts based on collected data.

    Main Results:

    • Umbilical cord length demonstrates wide variability at the same gestational age.
    • Male infants exhibit significantly longer umbilical cords compared to female infants (P < 0.0001).
    • Umbilical cord growth continues throughout the third trimester of gestation.

    Conclusions:

    • The study provides essential normative data for umbilical cord length, aiding in clinical assessment.
    • Sex is a significant determinant of umbilical cord length.
    • Continuous cord growth in the third trimester highlights ongoing fetal development processes.

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