Biparietal diameter as a predictor of fetal lung maturity.
Copyright policy )Biparietal diameter as a predictor of fetal lung maturity.
A correlation has been established between fetal biparietal diameter (BPD), amniotic fluid lecithin/sphingomyelin (L/S) ratio and optical density at 650 nm (O.D. 650). We have noted that if the BPD is greater than 9.2 cm, the L/S ratio and O.D. 650 will be greater than 2.0 and 0.15, respectively, in 90% of cases. We reviewed the literature on the complication rate of third-trimester amniocentesis under ultrasonic guidance and concluded that in the absence of good dating, a reliably obtained BPD greater than 9.2 cm indicates fetal lung maturity in cases where amniotic fluid studies cannot be performed.
Cephalometry, Amniotic Fluid, Sphingomyelins, Fetus, Fetal Organ Maturity, Pregnancy, Amniocentesis, Phosphatidylcholines, Humans, Female, Lung, Ultrasonography
Cephalometry, Amniotic Fluid, Sphingomyelins, Fetus, Fetal Organ Maturity, Pregnancy, Amniocentesis, Phosphatidylcholines, Humans, Female, Lung, Ultrasonography
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