Critical Revisits Among Children After Emergency Department Discharge

Study objective: Identifying higher risk groups could reveal ways to prevent critical emergency department (ED) revisits. The study objectives were to determine the rate of critical ED revisits among children discharged from the ED and to identify factors associated with critical revisits. Methods: We performed a retrospective study using the Healthcare Cost and Utilization Project State ED Databases (SEDD) and the State Inpatient Databases (SID). We included data from 6 states from 2014 through 2017. Critical ED revisit was defined as either ICU admission or death within 3 days of the initial ED discharge. We included all patients younger than 21 years. The main outcome was the rate of critical ED revisit. We also determined the relative risk (RR) of a critical ED revisit for the most common index ED visit diagnoses. We used negative binomial regression to calculate incidence rate ratios (IRR) of a critical ED visit by pediatric volume and complex chronic conditions. Results: A total of 16.3 million children were discharged from an ED over the 4-year study period. There were 18,704 (0.1%) critical ED revisits, 180 (0.00001%) of whom died. Asthma (RR 2.24, 95% confidence interval [CI] [2.11 to 2.38) had the highest relative risk of a critical revisit among all ED diagnoses. Adjusting for hospital volume and patient age, patients with complex chronic conditions were also more likely to have a critical ED revisit (IRR 11.03, 95% CI, 7.76 to 15.67). Conclusions: Critical revisits after ED discharge were uncommon among children in our study sample, with revisits resulting in patient death within 3 days of an ED discharge being rare. Given the short time interval between ED discharges, however, future research should focus on understanding higher risk patients among those with asthma and a history of complex chronic conditions.