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Macrosomia. A proposed indication for primary cesarean section.

D G Parks, H K Ziel

    Obstetrics and Gynecology
    |October 1, 1978
    PubMed
    Summary
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    Fetal macrosomia, a birthweight of 4500g or more, is linked to maternal factors and prolonged gestation. Cesarean delivery can mitigate associated obstetric and neonatal complications.

    Area of Science:

    • Obstetrics and Gynecology
    • Neonatal Health
    • Perinatal Medicine

    Background:

    • Fetal macrosomia, defined as birthweight ≥ 4500g, presents significant obstetric challenges.
    • Associated risk factors include maternal obesity, prolonged gestation, and maternal diabetes.

    Purpose of the Study:

    • To identify risk factors for fetal macrosomia.
    • To analyze obstetric and neonatal complications in macrosomic infants.
    • To evaluate the impact of delivery mode on outcomes.

    Main Methods:

    • Retrospective study of 110 infants with fetal macrosomia.
    • Comparison with a control group of smaller infants.
    • Analysis of maternal and infant data, including delivery complications and Apgar scores.

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    Main Results:

    • Key associations with macrosomia: excessive maternal weight, prolonged gestation, multiparity, maternal diabetes, male fetus, and prior macrosomic infant.
    • Common complications: postpartum hemorrhage and shoulder dystocia.
    • Lower one-minute Apgar scores (<7) in 10.9% of macrosomic infants versus 6.3% in controls.

    Conclusions:

    • Fetal macrosomia is associated with identifiable maternal and fetal factors.
    • Obstetric complications like postpartum hemorrhage and shoulder dystocia are frequent.
    • A high cesarean delivery rate (22.5%) contributed to a low fetal mortality rate (1.8%), suggesting increased abdominal delivery could further improve outcomes.