近13年足月新生儿出生体重与分娩方式的关系

The relation neonatal birth weight and delivery mode in 13 years

目的统计近13年足月新生儿的出生体重及其分娩方式,了解二者之间的关系,为临床提供参考。方法 1997年至2008年在我院出生的足月(37～41+6孕周)单胎的新生儿,共24676例。记录全部病例的分娩方式和新生儿出生体重。使用SPSSv16.0统计软件计算出分娩方式与出生体重之间的关系及近13年来的变化趋势。结果 (1)13年间阴道分娩率为43.0%,而剖宫产率为57.0%。(2)2003年阴道分娩率最低(31.2%),而1997年阴道分娩率最高(61.8%);剖宫产率与之相反。(3)出生体重与阴道分娩率、剖宫产率均存在显著的线性关系,随着出生体重的增加,阴道分娩率逐渐降低,而剖宫产率逐渐增加。3.40Kg以下组的阴道分娩率与剖宫产率相差较小(小于5%)。结论适当控制、降低出生体重,是提高阴道分娩分娩率、降低剖宫产率的措施之一;适宜体重应小于3.40Kg。

Objective To describe the relationship between neonatal birth weight and delivery mode from 1997 to 2009 in the first-affiliated hospital of Sun Yatsen university.Methods 24 676 cases of neonates birth weight and delivery mode were retrospectively collected of single,full-term neonates from 1997 to 2009.Retrospectively collected data of delivery mode and neonatal birth weight.SPSS v 16.0 software was used to analyze the relationship between neonatal birth weight and delivery mode.Results a)The average vaginal delivery rate was 43.0%,and cesarean section rate was 57.0%.b)The vaginal delivery rate reached the lowest(31.2%) in 2003,while it reached the highest(61.8%) in 1997.The cesarean section rate was just the opposite.c)There is linear relation between neonatal birth weight and delivery mode.The difference between vaginal delivery rate and cesarean section rate was the smallest(less than 5%) in groups which neonatal birth weight were less than 3.40 kg.Conclusions Modulating birth weight to a lower level could reduce the cesarean section rate and increase the vaginal delivery rate.