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目的探讨羊水板层小体(LB)计数联合孕龄产前预测NRDS的临床应用价值。方法 132例NRDS高危孕妇(10例新生儿发生NRDS,122例新生儿未发生NRDS)在产时直视下行羊膜穿刺术抽取羊水计数LB。采用ROC曲线分析比较LB计数单独或联合孕龄产前预测NRDS的效率。结果单独采用LB计数产前预测NRDS的曲线下面积(AUC)为0.927,以12.95×109/L为切割值,敏感度和特异度分别为100%和80.3%。LB计数联合孕龄产前预测NRDS的AUC为0.963,以Youden指数最大的切点为切割值,敏感度和特异度分别为100%和91.0%。结论联合孕龄可明显提高LB计数产前预测NRDS的效率。
Objective To investigate the clinical value of amniotic fluid lamellar body (LB) counting combined with gestational age prenatal prediction of NRDS. Methods 132 cases of high risk pregnant women with NRDS (10 neonates with NRDS and 122 without neonatal NRDS) underwent amniocentesis for amniocentesis LB. The ROC curve analysis was used to compare the efficiency of LB counting to predict NRDS prenatally alone or in combination with gestational age. Results The area under the curve (AUC) of prenatal NRDS prediction with LB alone was 0.927. The cut off value of 12.95 × 109 / L was 100% and 80.3%, respectively. The AUC of prenatal NRDS predicted by LB count combined with gestational age was 0.963, and the cutoff value of the maximum Youden index was 100% and 91.0%, respectively. Conclusion Combined gestational age can significantly improve the LB count prenatal prediction of NRDS efficiency.