摘要
目的 开展初产、经产儿宫内生长评价,研究初产、经产的宫内生长差异特征.制定不同胎龄初产、经产儿宫内生长曲线.方法 选择深圳、重庆、海口、广州、长沙、成都、泉州、柳州、桂林9个城市2017年-2020年324 521例胎龄27～42周活产单胎儿,按经产、初产、产次混合(即初产和经产混合)三类单胎儿分组,进行胎儿宫内生长等级分类评价,揭示经产儿宫内生长水平高于初产儿的差异特征.此外,采用横断面时间段整群取样现况调查方法,2013年4月至2015年9月在深圳市完成了 16 852例胎龄28～42周活产初产、经产单胎儿体格生长现场测量,制定初产、经产单胎儿宫内生长曲线.结果 中国9个城市的妇幼保健院经产、初产、产次混合三类单胎儿宫内生长等级分类评价结果呈现经产儿高于产次混合、初产儿低于产次混合的特征.制定了深圳16 852例胎龄28～42周初产、经产单胎儿(男、女及性别混合)体重、身长、顶臀长、头围、胸围3rd～97 th百分位曲线,发现经产单胎儿上述5项指标水平高于初产单胎儿,经产单胎儿体重10th、50th、90th曲线高于2015年深圳单胎儿,而初产单胎儿体重10th、50th、90th曲线低于2015年深圳单胎儿.结论 中国9个城市新生儿宫内生长评价为经产儿宫内生长水平高于初产儿.制定了深圳胎龄28～42周初产单胎儿、经产单胎儿体重、身长、顶臀长、头围、胸围3rd～97th百分位曲线,为初产儿和经产儿提供了上述5项指标的宫内生长评价标准,该曲线发现经产单胎儿上述5项指标曲线水平高于初产单胎儿.
Abstract
Objective To carry out the intrauterine growth evaluation of neonates,and establish intrauterine growth curves of singleton neonates in different gestational age(GA)among primiparity and multiparity.Methods We evaluated and classified the intrauterine growth of 324 521 multiparous,primiparous,and mixed neonates from Shenzhen,Chongqing,Haikou,Guangzhou,Changsha,Chengdu,Quanzhou,Liuzhou,and Guilin cities in China from 2017 to 2020.We also revealed the characteristics of intrauterine growth higher level in multiparity than that that in primiparity.A total of 16 852 live singleton neonates in 28～42 weeks of GA among primiparity and multiparity from Shenzhen City were measured at birth by cluster sampling from April 2013 to September 2015 in this cross sectional study.We established intrauterine growth curves of singleton neonates among primiparity and multiparity.Results The classification and evaluation results of intrauterine growth grade for 324 521 neonates in 9 maternal and child health care hospitals of China showed the orders in the characteristics were multiparous neonates,mixed neonates,and primiparous neonates.We created the intrauterine growth 3rd～97th percentile curves of body weight,body length,crown-rump length,head circumference,and chest circumference of 16 852 singleton neonates in 28～42 weeks of GA among primiparity and multiparity in Shenzhen,China.The level of above 5 indexes of multiparous neonates was higher than that of primiparous neonates.The 10th,50th and 90th curves of body weight for multiparous singleton neonates were higher than those of Shenzhen singleton neonates in 2015,while the 10th,50th and 90th curves of body weight for primiparous singleton neonates were lower than those of Shenzhen singleton neonates in 2015.Conclusion The level of intrauterine growth evaluation of neonates in multiparity was higher than that in primiparity in Chinese nine cities.We created the intrauterine growth 3rd～97th percentile curves of body weight,body length,crown-rump length,head circumference,and chest circumference of singleton neonates in 28～42 weeks of GA among primiparity and multiparity in Shenzhen,China.It provided the standard about above 5 indexes of intrauterine growth evaluation for multiparous neonates and primiparous neonates.The curve level of above 5 indexes of multiparous neonates was higher than that of primiparous neonates.
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