[不同体重指数的宫内生长受限胎盘的体视学研究]
[Stereological study of the placentae in intrauterine growth retardation with different ponderal index].
作者信息
Shen Y
机构信息
Shanghai Sixth Hospital.
出版信息
Zhonghua Fu Chan Ke Za Zhi. 1992 Nov;27(6):351-4, 380.
10 placentae each from the cases of IUGR with normal ponderal index (NPI) and low ponderal index (LPI) and 10 from normal pregnancy as control were analysed quantitatively with stereological principles. This study showed the placental weight, volume, surface area of villi and villous fetal capillary in IUGR were significantly reduced than that in control group. The percentage ratio of the fetal capillary volume was increased significantly in IUGR group but the ratio of vasculo-syncytial membrane/villous fetal capillary decreased. It suggested that compensation to anoxemia in placenta of IUGR was incomplete. The data also found that all the parameters in NPI group were decreased significantly than that in LPI group, which implied NPI group had a more severe growth deficiency of the placental functional structure. When placental growth deficiency occurs in the first or second trimester, both the fetal length and weight will be severely affected.
对10例正常体重指数（NPI）的胎儿生长受限（IUGR）病例和10例低体重指数（LPI）的IUGR病例的胎盘以及10例正常妊娠胎盘作为对照，运用体视学原理进行定量分析。本研究显示，IUGR组的胎盘重量、体积、绒毛表面积和绒毛内胎儿毛细血管均显著低于对照组。IUGR组胎儿毛细血管体积百分比显著增加，但血管合体膜/绒毛内胎儿毛细血管的比例降低。这表明IUGR胎盘对缺氧的代偿不完全。数据还发现，NPI组的所有参数均显著低于LPI组，这意味着NPI组胎盘功能结构的生长缺陷更为严重。当妊娠早期或中期出现胎盘生长不足时，胎儿的长度和体重都会受到严重影响。
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