This retrospective cohort study aimed to describe antipyretic use among healthy patients in a pediatric emergency department (ED) with nonurgent fever defined as: triage level 4 or 5, chief complaint fever or temperature 38°C to 39°C, and otherwise normal vital signs, and determine if antipyretic administration is associated with increased ED length of stay (LOS). We compared continuous variables using Kruskal-Wallis and Wilcoxon rank sum testing. We adjusted confounding variables using logistic regression modeling. A total of 22 169 patients were included. Of these, 52% received antipyretic: acetaminophen (38%), ibuprofen (19%), or both antipyretics (5%). ED LOS (median hours) varied by number of antipyretic types given (none, 2.2; ibuprofen, 2.7; acetaminophen, 2.7; and both 3.4, P < .001) and number of doses (0 doses, 2.2, 1 dose, 2.7; 2 doses, 3.4, P < .001). Patients who received antipyretic were more likely to have ED LOS greater than 2 hours (adjusted odds ratio 1.99, 95% CI 1.88-2.11) compared with those with no antipyretic, controlling for age, imaging studies, laboratory studies, antibiotic administration, and disposition.
Keywords: antipyretic; emergency department; fever management.