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[Birth weight in twins (author's transl)]

R Grande, J M Escalante, M Hernández

    Anales Espanoles De Pediatria
    |July 1, 1976
    PubMed
    Summary

    This study analyzed birth weights in 1,134 twin pairs. Twin birth weights varied significantly by sex and gestational age, with distinct growth patterns compared to single births.

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    Area of Science:

    • Obstetrics and Gynecology
    • Perinatology
    • Pediatric Endocrinology

    Background:

    • Twin pregnancies present unique physiological challenges.
    • Understanding twin birth weight is crucial for neonatal outcomes.
    • Existing data on twin birth weight requires population-specific analysis.

    Purpose of the Study:

    • To analyze birth weight patterns in a large cohort of twin pairs.
    • To compare twin birth weights between sexes and unlike sex pairs.
    • To evaluate twin growth trajectories relative to gestational age and single births.

    Main Methods:

    • Retrospective analysis of 1,134 twin pairs' birth weights.
    • Statistical comparison of mean birth weights based on sex and pair type.
    • Comparative analysis of twin growth curves against single birth standards.

    Main Results:

    • Statistically significant differences in mean birth weights were observed between sexes and unlike sex pairs.
    • Twin birth weights generally fell within one standard deviation of single birth weights until 37 weeks gestation.
    • Accelerated weekly weight gain in twins occurred until 34 weeks, followed by slower growth and weight loss after 39 weeks.

    Conclusions:

    • Twin birth weight is influenced by sex and gestational age.
    • Twin growth patterns diverge from single births at specific gestational milestones.
    • Significant weight discordance among twin pairs increases with gestational age, particularly after 36 weeks.

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