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  • Title: Estimated fetal weight in the evaluation of growth in twin gestations: a prospective longitudinal study.
    Author: Yarkoni S, Reece EA, Holford T, O'Connor TZ, Hobbins JC.
    Journal: Obstet Gynecol; 1987 Apr; 69(4):636-9. PubMed ID: 3547216.
    Abstract:
    A prospective longitudinal study was conducted in order to determine by sonographically estimated fetal weight the patterns of fetal growth in twins. Thirty-five healthy women with normal twin pregnancies were examined every three weeks from the 15th week of gestation to delivery. Among the measurements obtained were the biparietal diameter (BPD), the abdominal circumference, and the calculated fetal weight. From 15-28 weeks, the growth velocity of the BPD and abdominal circumference remained fairly constant, with a steady increase in incremental growth. Beyond this age, we observed a slowing in growth of the BPD, while the abdominal circumference continued at a constant rate. The growth velocity of the weight steadily increased throughout pregnancy. Although greater biologic variability in weight between twin A and B was observed as gestational age progressed, the overall mean weights of twin A and B were not statistically different. We have generated a nomogram of fetal weight gain throughout pregnancy.
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