Amniotic fluid volume in normal pregnancy: comparison of two different normative datasets.
Amniotic fluid volume in normal pregnancy: comparison of two different normative datasets.
复制标题
正常妊娠时的羊水量：两种不同标准数据集的比较。
DOI：
10.1111/j.1447-0756.2011.01710.x
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Morrison,JohnC
中科院分区：
文献类型：
--
作者：
Magann,EverettF;Chauhan,SuneetP;Sanderson,Maureen;McKelvey,Samantha;Dahlke,JoshuaD;Morrison,JohnC
Aim:The aim of the present study was to compare the two normative datasets of amniotic fluid volume (AFV).Material and Methods:The similarity of the two datasets to classify AFV as oligohydramnios, normal, and polyhydramnios based on fixed cut‐offs, stratified by gestational ages (<24 weeks, 24–336/7, 34–366/7, and >37 weeks, and to identify oligohydramnios/small for gestational age (SGA) and polyhydramnios/large for gestational age (LGA) was evaluated.Results:Of the 209 pregnancies assessed, the AFV was 94 ≤ 500 mL, 101 between 501 and 1999 mL, and 14 ≥ 2000 mL. The datasets were in agreement classifying the AFV as oligohydramnios, normal, and polyhydramnios in 76% of the pregnancies. Brace classified more overall patients with oligohydramnios (19%) versus Magann (3%) (P< 0.001). In term pregnancies (>37 weeks), Brace was more likely to classify pregnancies with oligohydramnios (15%) than Magann (3%) (P= 0.004). The likelihood ratio (LR) to detect oligohydramnios/SGA was greater with Magann (LR 12.9) versus Brace (LR 2.75).Conclusion:The two datasets classify AFV differently in 24% of cases. Brace's dataset is more likely to categorize patients as having oligohydramnios and Magann's dataset is a more useful test for oligohydramnios/SGA identification.
