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!

Cathy Parkes

Corticosteroids: Patient Teaching

Patients taking corticosteroids (e.g., prednisone, hydrocortisone) are at increased risk of infection. Monitor for signs of infection, and educate patients taking these medications to avoid crowded areas and perform frequent hand hygiene.