Pregnancy glossary

Fetal lung maturity steroids

Also called: Antenatal corticosteroids

Steroid injections given to the mother to accelerate the development of the fetal lungs when premature birth is expected.

When it comes up: Usually between weeks 24 and 34

These injections significantly reduce the risk of your baby developing breathing difficulties, bowel problems, and internal bleeding if born prematurely.

They work best when the last dose is given between 24 hours and one week before the birth. It is a vital preventive measure that saves the lives of premature babies and gives them a better start after birth.

Read more in the Nawah guide →

This guide is general information, not medical advice. It does not replace a doctor, and it knows nothing about your particular pregnancy. If something feels wrong, contact your doctor instead of waiting for the next scheduled visit.