Fetal Lung Maturity

by Cathy Parkes September 13, 2020 Updated: December 29, 2021

Anamniocentesis is a procedure used to identify chromosomal abnormalities, neural tube defects, Rh incompatibility, and fetal lung maturity.

Fetal lung maturity is determined by the L/S ratio (HINT: L/S measures levels of Lung Surfactants). AnL/S ratio ≥ 2:1 indicates the baby's lungs are mature.

Glucocorticoids can help promote fetal lung maturity in pre-term labor. Give 24-48 hours before birth.

To learn more, see our full article on amniocentesis!

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