择期早产对出生体重和头围标准的影响。
Influence of elective preterm delivery on birthweight and head circumference standards.
作者信息
Yudkin P L, Aboualfa M, Eyre J A, Redman C W, Wilkinson A R
出版信息
Arch Dis Child. 1987 Jan;62(1):24-9. doi: 10.1136/adc.62.1.24.
We calculated new birthweight and head circumference centiles for boys and girls between 24 and 42 weeks' gestation from 20,713 singleton live births at our hospital between 1978 and 1984. Among the 803 babies born at or before 34 weeks' gestation, 28% were delivered electively for fetal problems; they were considerably lighter than babies born after spontaneous preterm labour. In contrast, they showed only a small deficit in head circumference, possibly due to a brain sparing effect in growth retarded infants. Electively delivered preterm infants cause a bias in birthweight and head circumference centiles and we recommend that these babies should be excluded when these centiles are calculated.
我们根据1978年至1984年间我院20713例单胎活产儿的数据，计算了妊娠24至42周的男、女新生儿体重和头围百分位数。在妊娠34周及以前出生的803例婴儿中，28%因胎儿问题而选择性分娩；他们比自然早产出生的婴儿体重轻得多。相比之下，他们的头围仅略有不足，这可能是由于生长受限婴儿的脑保护效应。选择性分娩的早产儿会导致出生体重和头围百分位数出现偏差，我们建议在计算这些百分位数时应排除这些婴儿。
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