Optimizing the timing of antenatal corticosteroid administration prior to anticipated preterm birth: A retrospective cohort study.

Objective: To examine suboptimal antenatal corticosteroid (ACS) administration based on indications and maternal-obstetrical factors.

Methods: Women who prematurely delivered (24 + 0 to 36 + 6 gestational weeks) a viable neonate following ACS treatment between 2012 and 2019 were identified by a retrospective database review. The cohort was divided into patients in whom ACS administration was optimally timed (≥24 h to ≤7 days) or suboptimally timed (>7 days).