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Using corticosteroids during pregnancy. Are topical, inhaled, or systemic agents associated with risk?
Canadian Family Physician Medecin De Famille Canadien
|October 1, 2004
Summary
Corticosteroid use in pregnancy is a concern. Systemic corticosteroids in the first trimester may be linked to oral clefts, but topical and inhaled forms appear safe due to lower exposure.
Area of Science:
- Reproductive medicine
- Pharmacology
- Teratology
Background:
- Corticosteroids are widely used for autoimmune and inflammatory conditions.
- Women of reproductive age frequently use topical, inhaled, or oral corticosteroid preparations.
- Uncertainty exists regarding the safety of corticosteroid use during pregnancy.
Purpose of the Study:
- To evaluate the safety of corticosteroid use during pregnancy.
- To provide guidance for advising pregnant patients on corticosteroid use.
Main Methods:
- Review of existing literature, including meta-analyses.
- Analysis of studies focusing on first-trimester corticosteroid exposure.
- Comparison of risks associated with systemic, topical, and inhaled corticosteroids.
Main Results:
- First-trimester studies on corticosteroid use were previously inconclusive and underpowered.
- Recent meta-analyses indicate a small but significant association between first-trimester systemic corticosteroid use and oral clefts.
- No similar evidence of risk was found for topical or inhaled corticosteroids.
Conclusions:
- Systemic corticosteroid use in the first trimester of pregnancy may be associated with an increased risk of oral clefts.
- Topical and inhaled corticosteroids likely pose minimal risk due to limited systemic absorption.
- Further research may be needed, but current evidence suggests caution with systemic agents.