Association of antenatal corticosteroids with morbidity and mortality among preterm multiple gestations: meta-analysis of observational studies.

ACS may be beneficial for reducing the risks of RDS, mortality, IVH and PVL among preterm multiple gestations. The efficacy of ACS could be affected by ACS completeness and administration-to-delivery. More robust evidence on the efficacy of ACS treatment among multiple gestations is warranted.