The objective of this study was to determine the incidence of hydrocortisone-associated gastrointestinal bleeding (GIB) in infants <3 months and compare rates with or without stress ulcer prophylaxis.

Retrospective cohort study of NICU patients <3 months who received hydrocortisone for hypotension. Three logistic regressions were conducted for adjusted associations between GIB, necrotizing enterocolitis (NEC), or infection and clinical characteristics.

Of 233 patients included, 54 (23.2%) received SUP; the majority (96.3%) received histamine-2 receptor antagonists. Median postmenstrual and postnatal age at hydrocortisone initiation was 33.3 weeks and 2 days. GIB occurred in 22 patients (9.4%), with no difference in GIB (11.1% versus 8.9%, p = 0.632) or SUP-associated adverse effects (50.0% versus 52.0%, p = 0.80) with and without SUP. SUP was not associated with GIB, NEC, or infection when controlling for confounders.

GIB occurred in 9.4% of patients. SUP did not provide benefit for GIB prevention and was not associated with increased risk of adverse effects.