Reference values for singleton and twin placental weights
Reference values for singleton and twin placental weights
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DOI：
10.1080/15513819609168713
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发表时间：
1996-11-01
期刊：
影响因子：
--
通讯作者：
Singer, DB
中科院分区：
文献类型：
--
作者：
Pinar, H;Sung, CJ;Singer, DB
1959年至1966年期间，围产期协作研究收集了最大系列的正常单胎胎盘重量，但未发表正常双胎胎盘重量的值。在我们的研究中，我们检查了787个单胎和514个双胎正常胎盘。排除了具有已知影响胎盘重量的相关病症的胎盘。在建立了单胎和双胎胎盘重量的正常值后，我们得出结论，双胎胎盘的重量增加似乎在24 - 36周之间加速，但在37周后达到平台期，而单胎胎盘在整个妊娠期间似乎更均匀地增加重量。每个胎龄的双胎胎盘重量的平均值小于相同妊娠期单胎胎盘重量的两倍。我们的单胎和双胎胎盘比以前公布的数据更重，可能反映了自原始数据编制以来30年来的世代或营养变化。
The largest series of normal singleton placental weights was collected in the Collaborative Perinatal Study between the years 1959 and 1966 but values for normal twin placental weights were not published. In our study we examined 787 singleton and 514 twin normal placentas. Placentas with associated conditions known to affect the weights of placentas were excluded. After establishing the normal values for singleton and twin placental weights, we concluded that weight gain of twin placentas appears to accelerate between 24 and 36 weeks but reaches a plateau after 37 weeks, whereas singleton placentas appear to gain weight more uniformly throughout gestation. The mean values of twin placental weights for each gestational age are less than double those of singleton placental weights for the same duration of gestation. Our singleton and twin placentas are heavier than those from previously published data and may reflect a generational or nutritional change over the 30 years since the original numbers were compiled.