Usandizaga M, Ortiz-Caro J, Celorio J A, Calero F, García Elvira J I, Usandizaga J A
Geburtshilfe Frauenheilkd. 1984 Oct;44(10):656-8. doi: 10.1055/s-2008-1036325.
In order to answer the question as to the limit of intrauterine foetal growth retardation, we compared three weight values at birth: two standard deviations below the mean, namely the fifth and tenth percentiles. The comparisons were made on the intrapartum and early neonatal mortality rates of 19,256 infants born during 1980 in "La Paz" Maternity Hospital of Madrid. Our results show that we have to consider as newborn with a growth retardation those infants whose weight at birth is lower than the fifth percentile for their gestational age and sex. In this group of infants, the intrapartum and early neonatal mortality rates are significantly higher than among newborn with a superior weight. At the same time, we found that the mortality among newborn with a weight between the fifth and tenth percentile was not significantly higher than that observed among infants with a weight at birth greater than the tenth percentile.
为了回答关于宫内胎儿生长受限限度的问题，我们比较了出生时的三个体重值：低于均值两个标准差，即第五和第十百分位数。比较是基于1980年在马德里“拉巴斯”妇产医院出生的19256名婴儿的产时和早期新生儿死亡率进行的。我们的结果表明，对于那些出生体重低于其孕周和性别的第五百分位数的婴儿，我们必须将其视为生长受限的新生儿。在这组婴儿中，产时和早期新生儿死亡率显著高于体重较高的新生儿。同时，我们发现体重在第五和第十百分位数之间的新生儿的死亡率并不显著高于出生体重高于第十百分位数的婴儿。
