Impact of the Sofia® Influenza A+B FIA rapid diagnostic test in a pediatric emergency department

Abstract

ObjectiveThe objective of this study was to evaluate the impact of a rapid diagnostic test for influenza (the Sofia® Influenza A+B FIA rapid diagnostic test [RDT]) in a pediatric emergency department (PED). MethodsA retrospective, observational, cross-sectional study was conducted in the PED of the Lille University Hospital between 2013 and 2015. All patients under 18 years of age for whom influenza RDT was administered were included. Clinical data, management, and related hospitalizations were compared between positive and negative RDT groups. The length of stay in the PED (main outcome) and the number of additional tests (biological and radiographic tests) between the two groups were compared. ResultsA total of 238 tests were reported: 119 positive, 110 negative, nine invalid. The mean length of stay in the PED was significantly lower in the positive RDT group: 4.0h vs. 7.4h (P<10−6). Patients with positive RDT had significantly fewer biological tests (20% vs. 56%; P<10−7) and radiographs (23% vs. 52%; P<10−5). The prevalence of hospitalizations in a short-stay unit was significantly lower in patients with positive RDT (0.8% vs. 9.1%; P=0.009). ConclusionsThis study showed a significant medical impact of the use of Sofia® Influenza RDT A+B FIA in a PED regarding the length of stay and the number of additional explorations.