Long-term postnatal steroid effect in very low birth weight infants.

We examined whether hydrocortisone exposure≤1week in very low birth weight infants (VLBWI) was associated with poor neurodevelopmental outcomes at corrected 18months. Further, the clinical factors associated with worse long term outcome were also evaluated. Of a total of 191 VLBWI, the clinical data for these infants relating were retrospectively collected for analysis. Among the 191 VLBWI, 115 (60.2%) infants were exposed to early postnatal hydrocortisone≤1week of life in our NICU of Seoul St. Mary's Hospital, The Catholic University of Korea between December 2012 and December 2014. The morbidities were significantly higher in the group with early hydrocortisone exposure group. At corrected age of 18months, 109/183 (59.6%) infants in the early hydrocortisone exposure group had significantly lower scores in all three (cognitive, language and motor) composites of Bayley Scales of Infant and Toddler Development III. The multivariable logistic regression analysis showed that only periventricular leukomalacia (PVL) is consistently associated with poor long-term outcomes. Our results suggest that early hydrocortisone exposure≤1week in VLBWI may not increase the risk for poor long-term outcomes compared to those not exposed. Only PVL is considered as a risk factor for poor long-term neurodevelopmental outcomes.