#61: Antibiotic Use for Community-Acquired Pneumonia Among Hospitalized Children in Japan

<jats:title>Abstract</jats:title> <jats:sec> <jats:title>Background</jats:title> <jats:p>Judicious use of antimicrobials is the cornerstone of action against antimicrobial resistance. Respiratory tract infections account for over 80% of pediatric antibiotic use in Japan. Antibiotics are generally used empirically for most hospitalized patients with pneumonia although it is becoming clearer that viral etiologies account for approximately 70% of these cases. Defining the characteristics of patients who are managed with a short course of antibiotics and subsequently do well, may lead to setting clinical criteria for early termination of antibiotics.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>We performed a retrospective descriptive analysis. Medical charts of patients aged 3 months to 18 years, who were admitted with a diagnosis of pneumonia, bronchitis, bronchiolitis, or asthma to the Department of Interdisciplinary medicine at the National Center for Child Health and Development from March 2018 through February 2019 were reviewed. Those who had respiratory symptoms and were started on antibiotics within 48 hours of hospitalization were included. Those who had a focus of infection elsewhere or were immunocompromised were excluded.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Of the 556 candidates, 80 patients met the criteria. The median age was 1.5 years which included 42.5% (34/80) with comorbidities. Underlying conditions included 9 with trisomy 21, and 8 with perinatal issues. Rapid antigen testing was performed and 7 patients with RSV, 5 patients with influenza, 1 patient with human metapneumovirus were identified. The average duration of antibiotic therapy was 7.2 days (range 2–14 days). There were no statistical differences in the characteristics of patients who received antibiotics for more or less than 5 days. The positivity of the rapid antigen test tended to be higher in those who received antibiotics for a shorter period (25% vs. 15%). There were no differences in the rate of readmission or complications between the two groups.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>We were unable to identify a clear characteristic of patients who received short courses of antibiotics for pneumonia. The trend observed for those who had a point of care testing may suggest that the use of a multiplex PCR testing covering a greater number of pathogens would influence physician behavior in antibiotic use.</jats:p> </jats:sec>