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本文对住院分娩1300例新生儿(男性700例,女性600例)体重与胎盘重量进行测量和分析.孕周为37～42周,年龄为16～43岁,初产妇1203例,经产妇97例.测量方法:新生儿断脐后用婴儿秤称体重,胎盘娩出后擦去附着的血块的称重量.结果:男婴体重2400克～4650克,平均3305.1克±401.9;婴胎盘重为455克～630克,平均553.4克±96.80.女婴体重1800克～4650克,平均3216.9克±406.7;胎盘重为450克～620克,平均为546.8克±86.4.男新生儿体重大于女新生儿(P<0.01);男女新生儿胎盘重量无差别(P>0.05).男女胎盘系数即胎盘重量与新生儿体重(克)的比值分别为0.167和0.169,略有差别.对体重与胎盘重量进行直线回归分析,男女新生儿均具有高度相关(P<0.01).研究结果表明,男婴平均体重略大于女婴,与国内其它地区报道相同.与1980年上海地区测量新生儿体重结果相比较,其平均体重为3203克,本文
The body weight and placental weight of 1300 newborns (700 males and 600 females) were measured and analyzed in this paper.The gestational age ranged from 37 to 42 weeks, ranging from 16 to 43 years old, with 1203 primipara and 97 maternal .Methods: After the umbilical cord was broken, the newborn baby was weighed and the weight of the clot attached to the placenta was removed.Results: The male infant weighing 2400 g ~ 4650 g, with an average of 3305.1 g ± 401.9 and infant placenta weighing 455 g ~ 630 grams, an average of 553.4 grams ± 96.80. Baby girl weighing 1800 grams to 4650 grams, an average of 3216.9 grams ± 406.7; placental weight of 450 grams to 620 grams, with an average of 546.8 grams ± 86.4 male neonates heavier than female neonates P <0.01), there was no significant difference in the weight of placenta between male and female neonates (P> 0.05) .The ratio of placental weight, male and female, was 0.167 and 0.169, respectively Regression analysis showed that male and female newborns were highly correlated (P <0.01) .The results showed that the average weight of infants was slightly larger than that of female infants, which was the same as that reported in other regions of China.Comparing with the results of neonatal body weight measured in Shanghai in 1980, The average weight is 3203 grams, this article