Chang Yao-Lung, Chang Ting-Chang, Chang Shuenn-Dyh, Cheng Po-Jen, Chao An-Shine, Hsieh Peter C C, Soong Yung-Kuei
Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital Linkou Medical Center, 5 Fu-Shin Road, Kwei-Shan, Tao-Yuan, Taiwan.
Eur J Obstet Gynecol Reprod Biol. 2006 Jul;127(1):35-40. doi: 10.1016/j.ejogrb.2004.04.037.
To evaluate the usefulness of sonographic prediction of significant birth weight discordance in twin pregnancies.
Included in the study were live twin pairs with a gestational age of 24 weeks at birth who had received a sonographic examination within 28 days of delivery. Correlation tests and ROC curves were used to evaluate the predictability of significant intertwin growth discordance.
A total of 575 twin pregnancies were included in the study. The estimated discordance by sonographic examination proved to be an effective predictor of discordant twin growth. The birth weight discordance estimated by sonography tended to underestimate the degree of discordant twins.
If a sonographic examination is done within 28 days of delivery, it is a reliable predictor of twin birth weight discordance at the following levels: 15%, 20%, 25% or 30%. In order to obtain a higher sensitivity, the cut-off value of estimated birth weight discordance needs to be decreased by 5%.
评估超声检查对双胎妊娠中显著出生体重不一致的预测价值。
本研究纳入了出生时孕周为24周的存活双胎，这些双胎在分娩后28天内接受了超声检查。采用相关性检验和ROC曲线评估双胎间显著生长不一致的可预测性。
本研究共纳入575例双胎妊娠。超声检查估计的不一致性被证明是双胎生长不一致的有效预测指标。超声估计的出生体重不一致性往往低估了双胎不一致的程度。
如果在分娩后28天内进行超声检查，它是以下水平双胎出生体重不一致的可靠预测指标：15%、20%、25%或30%。为了获得更高的敏感性，估计出生体重不一致的临界值需要降低5%。
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