Parulekar S G
J Ultrasound Med. 1983 Mar;2(3):107-10. doi: 10.7863/jum.1983.2.3.107.
This prospective study of 131 pregnant women was designed to determine the incidence and significance of floating particles in amniotic fluid. Floating particles ranging in size from 1 to 5 mm were seen in the amniotic fluid of pregnant women at 15 to 40 weeks' gestation. Since vernix is rarely present before 35 weeks' gestation, a source other than flakes of vernix must be sought to explain the floating particles in amniotic fluid in early gestations. There was no significant difference in the sizes or numbers of particles at different gestational ages (from 15 to 40 weeks). Therefore, it is concluded that ultrasonographic demonstration of floating particles in amniotic fluid cannot be considered an indicator of fetal maturity.
这项针对131名孕妇的前瞻性研究旨在确定羊水漂浮颗粒的发生率及其意义。在妊娠15至40周的孕妇羊水中可见大小为1至5毫米的漂浮颗粒。由于妊娠35周前很少出现胎脂，因此必须寻找除胎脂片以外的其他来源来解释早期妊娠羊水中的漂浮颗粒。不同孕周（15至40周）的颗粒大小和数量没有显著差异。因此，得出结论：超声显示羊水中的漂浮颗粒不能被视为胎儿成熟度的指标。
