Question:
Which drug is used to promote fetal lung maturity?
Which drug is used to promote fetal lung maturity?
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A placenta-crossing glucocorticoid boosts surfactant.
Updated On: Jun 24, 2026
- Dexamethasone
- Folic acid
- Beclomethasone
- None
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Antenatal corticosteroids accelerate fetal surfactant production and lung maturation, reducing respiratory distress in preterm neonates.
Step 2: Dexamethasone (and betamethasone) cross the placenta well and are the agents given to the mother in threatened preterm birth, so option A is correct.
Step 3: Folic acid prevents neural tube defects and has no role in lung maturity, and beclomethasone is an inhaled steroid for asthma that is not used to mature the fetal lung. None of those replaces dexamethasone here.
Step 2: Dexamethasone (and betamethasone) cross the placenta well and are the agents given to the mother in threatened preterm birth, so option A is correct.
Step 3: Folic acid prevents neural tube defects and has no role in lung maturity, and beclomethasone is an inhaled steroid for asthma that is not used to mature the fetal lung. None of those replaces dexamethasone here.
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