Reducing Blood Culture and Antibiotic Usage in Neonates

Background: A maternal diagnosis of chorioamnionitis, based on maternal peripartum fever of 100.4°F alone, is commonly used as an indication for blood work and antibiotic treatment in newborns. New strategies such as the Kaiser Permanente early-onset sepsis (EOS) calculator have proven effective in identifying high-risk newborns and reducing unnecessary antibiotic administration. Purpose: Retrospective data from October 2017 to September 2018 from 297 well-appearing newborns ≥35 weeks' gestational age (GA) with maternal chorioamnionitis showed that 93.6% had blood work and 90.2% were treated with antibiotics. This was despite no culture-positive cases of sepsis. Our aim was to reduce by 50% blood work evaluation and antibiotic treatment within a 6-month period. Methods: Using plan-do-study-act (PDSA) cycles, we adopted the Kaiser Permanente EOS calculator. We collected longitudinal data to track the outcomes after its implementation. Results: In 423 newborns with maternal chorioamnionitis triaged with the EOS calculator from October 2018 to July 2020, the rates of blood culture and antibiotic treatment decreased from 93.6% to 26.7% and 90.2% to 12.3% (P < .0001). In the larger population of 6426 newborns ≥35 weeks' GA, the rate of blood culture and antibiotic treatment decreased from 12.8% to 5.8% and 9.9% to 2.5% (P < .0001). Implications for Practice: The EOS calculator substantially and safely decreases blood work and antibiotic administration in asymptomatic newborns with maternal chorioamnionitis. Implications for Research: Our findings provide further evidence for the effectiveness and safety of the EOS calculator. Video abstract available at https://journals.lww.com/advancesinneonatalcare/Pages/videogallery.aspx.