从近预产期或临产的正常或有合并症的245例妇女中采取了246份羊水标本。测定羊水内L/S比值,羊水大部分在分娩时通过羊膜镜管道收集。少部分通过腹壁羊膜囊穿刺取得。穿刺的指徵有Rh血型不合、孕令不确和在高危妊娠有无胎便存在。根据肺部缺乏表面活性物质,主要为卵磷脂(L)与胎儿以后发生透明膜疾病可能有关、产前分析羊水内磷脂类物,利用L/S比值予测胎儿肺部 246 samples of amniotic fluid were taken from 245 women with normal or comorbid normal or at-risk of labor. Determination of amniotic fluid L / S ratio, most of the amniotic fluid collected during delivery through the amniotic tube. A small part of the amniotic sac puncture obtained. Puncture indications of Rh blood group incompatibility, gestational age is not accurate and in the presence of high-risk pregnancy with orchitis. Lack of surfactant based on the lungs, mainly lecithin (L) and the fetus after the occurrence of hyaline membrane disease may be related to prenatal analysis of amniotic fluid phospholipids, the use of L / S ratio to be measured fetal lung