Amniotic fluid absorbance at 650 nm: Its relationship to the lecithin/sphingomyelin ratio and neonatal pulmonary sufficiency

In the present study, we sought to assess the clinical efficacy of the optical density of amniotic fluid at 650 nm (A650) to predict lung maturity in the human fetus. The A650 of 113 samples of amniotic fluid obtained from 16 to 45 weeks' gestation was determined. Mature values (A650 ≥ 0.11) we...

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