Are Corticosteroids Safe for Preterm Twin Pregnancies?

Managing preterm labor in multiple gestations presents unique challenges for obstetricians. Historically, clinicians have routinely administered antenatal corticosteroids to accelerate fetal lung maturity in singleton pregnancies. However, clinicians still debate the clinical utility of corticosteroids in twin pregnancies due to conflicting research. A recent systematic review and meta-analysis shed light on this critical clinical dilemma. Specifically, researchers evaluated whether these hormones truly improve neonatal outcomes in twin births.

Evaluating the Efficacy of Corticosteroids in Twin Pregnancies

The comprehensive review analyzed sixteen trials and observational studies involving over 18,000 neonates. Surprisingly, the data revealed that antenatal corticosteroid exposure did not significantly reduce neonatal mortality. In addition, the researchers found no overall reduction in respiratory distress syndrome among exposed twins. Consequently, these findings challenge the long-held assumption that multiple gestations benefit from steroids in the same manner as singletons. Furthermore, the overall certainty of the current evidence remains moderate to low, requiring cautious clinical application.

Clinical Implications and Safety Concerns

Moreover, safety concerns emerged when researchers restricted the analysis to randomized controlled trials. Specifically, exposed neonates in these trials demonstrated a higher risk of respiratory distress syndrome. Similarly, the study highlighted the risk of neonatal hypoglycemia, which demands vigilant monitoring after birth. Therefore, obstetricians in India must balance these potential risks against unproven respiratory benefits before prescribing steroids. Ultimately, we need larger, high-quality clinical trials to establish clearer guidelines for twin gestations.

Frequently Asked Questions

Q1: Do antenatal corticosteroids lower neonatal mortality in twin pregnancies?

No, the review found that corticosteroid exposure does not significantly reduce neonatal mortality in twins. However, the evidence remains limited, so clinicians should carefully individualize treatment.

Q2: Why did randomized controlled trials suggest a higher risk of respiratory distress syndrome?

Although the exact mechanism remains unclear, randomized trials suggested a higher risk of respiratory distress in steroid-exposed twins. Therefore, multiple gestations may respond differently to steroids than singletons, requiring more study.

Q3: What other neonatal risks are associated with corticosteroid exposure in twins?

Neonatal hypoglycemia is a significant risk associated with antenatal corticosteroid exposure in twin pregnancies. Therefore, healthcare providers must perform close metabolic monitoring of these infants immediately after birth to prevent adverse complications.

References

1. Felippe CA et al. Antenatal Corticosteroid Use in Twin Pregnancies: A Systematic Review and Meta-analysis. Obstet Gynecol. 2026 Jun 04. doi: 10.1097/AOG.0000000000006344. PMID: 42241699.
2. Melamed N et al. The role of antenatal corticosteroids in twin pregnancies complicated by preterm birth. Am J Obstet Gynecol. 2016 Oct;215(4):482.e1-9. doi: 10.1016/j.ajog.2016.05.037. PMID: 27263991.
3. Socha TB et al. Antenatal Corticosteroids and Neonatal Outcomes in Twins: A Systematic Review and Meta-analysis. Obstet Gynecol. 2022 Jul 1;140(1):27-35. doi: 10.1097/AOG.0000000000004835. PMID: 35849452.