Blickstein I, Shoham-Schwartz Z, Lancet M, Borenstein R
Obstet Gynecol. 1987 Jul;70(1):11-5.
A computer-assisted analysis of perinatal variables was undertaken in order to characterize the growth-discordant twin. We studied 124 twin pairs grouped at four degrees of discordancy: over 5, 10, 15, and 20% birth weight difference, using the larger twin as 100%. Twins with birth weight discrepancy below these figures were considered concordant. Highly discordant second twins showed significantly lower birth weight, gestational age, and Apgar scores, and prolonged neonatal hospitalization, as compared with discordant first twins. Complex presentations and a higher cesarean section rate characterize discordant first and concordant twins. It is suggested that a 15% birth weight discordancy be used as the safety limit for birth weight disparity. We also recommend special attention when discordancy seems to increase, especially if the discordant is the second twin.
为了对生长不一致的双胞胎进行特征描述，我们进行了一项围产期变量的计算机辅助分析。我们研究了124对双胞胎，根据出生体重差异的四个程度进行分组：超过5%、10%、15%和20%，以较大的双胞胎体重为100%。出生体重差异低于这些数字的双胞胎被视为一致。与不一致的第一个双胞胎相比，高度不一致的第二个双胞胎出生体重、孕周和阿氏评分显著更低，新生儿住院时间延长。复杂的分娩情况和更高的剖宫产率是不一致的第一个双胞胎和一致的双胞胎的特征。建议将15%的出生体重不一致作为出生体重差异的安全限度。我们还建议，当不一致性似乎增加时，尤其是当不一致的是第二个双胞胎时，要特别关注。
