Teramo K, Hallman M
Acta Endocrinol Suppl (Copenh). 1980;238:21-3.
The lecithin/sphingomyelin ration (L/S) of the amniotic fluid is a reliable indicator of fetal lung maturity in most disorders complicating pregnancy. False positive results of L/S occur especially in diabetic pregnancies. Phosphatidylglycerol (PG) improves the ability of the surface active lecithin to prevent lung atelectasis. Respiratory distress syndrome of the newborn infant does not seem to occur when PG is present. By determining PG of the amniotic fluid, false positive L/S can be excluded in diabetic pregnancies.
羊水的卵磷脂/鞘磷脂比值（L/S）是大多数妊娠合并症中胎儿肺成熟度的可靠指标。L/S出现假阳性结果尤其见于糖尿病妊娠。磷脂酰甘油（PG）可提高表面活性卵磷脂预防肺不张的能力。当存在PG时，新生儿呼吸窘迫综合征似乎不会发生。通过测定羊水的PG，可排除糖尿病妊娠中的L/S假阳性。
