C-Reactive Protein and the Outcome of a Pediatric Emergency Department 7 Days Revisit

Background Pediatric emergency department (PED) return visits represent an important quality of care metric and constitute a patient-centered outcome. C-reactive protein (CRP) is an inflammatory biomarker that is commonly used as screening tool in the PED. In this study, we assessed the clinical outcomes of children whose levels of CRP are 150 mg/L or higher at the initial PED visit and if such levels could be useful in predicting outcomes at a second PED visit. Methods A historical cohort study of all patients who visited the PED between July 2007 and June 2017 and had a CRP value of 150 mg/L or greater in the setting of a febrile illness. Data of patients with a return visit to the PED within 7 days were assessed for an association between laboratory values, diagnosis and clinical outcome. Results One hundred thirty-six index visits were included in this study. One hundred fifteen (84.6%) of the revisits were discharged after their second visit, and 21 (15.4%) were admitted to the inpatient unit. Admitted patients did not differ from patients who were discharged home in diagnosis and CRP levels, but a difference in white blood cell and absolute neutrophil counts was observed. Conclusions The intensity of the inflammatory response, as expressed by the high concentrations of CRP in children, does not seem to predict the outcome at a repeat PED visit within 7 days.