BACKGROUND: There is a paucity of data describing pediatric patients transferred to an ICU within 24 hours of hospital admission from the emergency department (ED). METHODS: We conducted a retrospective cohort study of patients ≤21 years old transferred from an inpatient floor to an ICU within 24 hours of ED disposition from 2007 to 2016 in a tertiary children’s hospital. Patients transferred to an ICU after planned operative procedures were excluded. Rate of transfer, clinical course, and baseline demographic and/or clinical characteristics of these patients are described. RESULTS: The study cohort consisted of 841 children, representing 1% of 82 397 non-ICU ED admissions over the 10-year period. Median age was 5.1 years, 43% had ≥1 complex chronic condition, and 47% were hospitalized within the previous year (27% in the ICU). The majority of transfers were for respiratory conditions (65%) and cardiovascular compromise (18%). Median time from hospitalization to ICU transfer was 9.1 hours (interquartile range 5.1–14.9 hours). Thirty-eight percent of transfers received 1 or more critical interventions within 72 hours of hospitalization, most commonly positive pressure ventilation (29%) and vasoactive infusion (9%). Median time to intervention from hospitalization was 13.6 hours (interquartile range 7.5–21.6 hours), 0.8% of children died within 72 hours of hospitalization, and 2.4% died overall. CONCLUSIONS: In this single pediatric academic center, 1% of hospitalized children were transferred to an ICU within 24 hours of ED disposition. One-third of patients received a critical intervention, and 2.4% died. Although most ED dispositions are appropriate, future efforts to identify patients at the highest risk of deterioration are warranted.

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