A comparison of the early growth of twins and singletons
A comparison of the early growth of twins and singletons
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DOI：
10.1080/03014460410001670120
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发表时间：
2004-05-01
影响因子：
1.7
通讯作者：
Green, M
中科院分区：
文献类型：
--
作者：
Buckler, JMH;Green, M
背景资料：众所周知，双胞胎的出生体重小于单胞胎，但关于出生长度如何比较以及双胞胎在产后和幼儿期如何生长的信息较少。在比较双胞胎与单胞胎的产后进展时，双胞胎妊娠期较短的含义很少被考虑在内。目的：本研究旨在比较健康双胞胎和单胞胎在生命的前4年的生长情况。1990年至1997年出生的英国双胞胎的出生长度数据被用来产生胎龄从33周到40周的参考值。报告了其中一些早产婴儿的体重和身长的随访数据，直至相当于妊娠40周。在问卷调查的基础上，双胞胎的体重，身长/身高和头围的增长已被随访到4岁的age.Results：双胞胎的平均出生长度显示了下降时，与单胎在相当的胎龄，这是更显着的男孩比女孩，并在早期明显。早产双胞胎的子宫外生长与在子宫内充分营养直到足月的双胞胎相当。双胞胎出生时体型较小主要是因为他们的妊娠期较短。随后，单身者体重增加得更快。与单胎动物相比，Leps/身高未显示出任何缺陷。双胞胎的头围，但是，小于singletons.Conclusions：正常双胞胎的早期生长显着不同的单胞胎。重要的是要认识到，单胎参考值不能正确反映双胞胎的生长。
Background: It is well known that the birth weight of twins is less than that of singletons, but there is less information about how birth lengths compare and how twins grow in the postnatal and early childhood period. The implications of the shorter duration of gestation of twins in comparing their postnatal progress with that of singletons are seldom taken into consideration.Aims: The study aimed to compare the growth of healthy twins and singletons over the first 4 years of life.Subjects and methods: Birth length data on English twins born between 1990 and 1997 were used to produce reference values for gestational ages from 33 to 40 weeks. Follow-up data of weights and lengths up to the equivalent of 40 weeks' gestation are reported on some of these infants who were born pre-term. On the basis of questionnaires, the growth of twins in terms of weight, length/height and head circumference has been followed up to 4 years of age.Results: Mean birth length of twins showed a fall-off when compared with singletons at comparable gestational ages, which was more marked in boys than girls and evident earlier. Extrauterine growth of twins born pre-term was comparable to that of adequately nourished twins remaining in utero until term. Much of the smallness of twins at birth was because of their shorter gestation. Subsequently singletons gained weight faster. Lengths/heights showed no deficit compared with singletons. Head circumferences of twins were, however, smaller than singletons throughout.Conclusions: The early growth of normal twins differs markedly from that of singletons. It is important to recognize that singleton reference values do not correctly reflect the growth of twins.