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Objective: To describe patterns of inappropriate antibiotic prescribing at US children’s hospitals and how these patterns vary by clinical service. Design: Serial, cross-sectional study using quarterly surveys. Setting: Surveys were completed in quarter 1 2019–quarter 3 2020 across 28 children’s hospitals in the United States. Participants: Patients at children’s hospitals with ≥1 antibiotic order at 8:00 a.m. on institution-selected quarterly survey days. Methods: Antimicrobial stewardship physicians and pharmacists collected data on antibiotic orders and evaluated appropriateness of prescribing. The primary outcome was percentage of inappropriate antibiotics, stratified by clinical service and antibiotic class. Secondary outcomes included reasons for inappropriate use and association of infectious diseases (ID) consultation with appropriateness. Results: Of 13,344 orders, 1,847 (13.8%) were inappropriate; 17.5% of patients receiving antibiotics had ≥1 inappropriate order. Pediatric intensive care units (PICU) and hospitalists contributed the most inappropriate orders (n = 384 and n = 314, respectively). Surgical subspecialists had the highest percentage of inappropriate orders (22.5%), and 56.8% of these were for prolonged or unnecessary surgical prophylaxis. ID consultation in the previous 7 days was associated with fewer inappropriate orders (15% vs 10%; P < .001); this association was most pronounced for hospitalist, PICU, and surgical and medical subspecialty services. Conclusions: Inappropriate antibiotic use for hospitalized children persists and varies by clinical service. Across 28 children’s hospitals, PICUs and hospitalists contributed the most inappropriate antibiotic orders, and surgical subspecialists’ orders were most often judged inappropriate. Understanding service-specific prescribing patterns will enable antimicrobial stewardship programs to better design interventions to optimize antibiotic use.

The utility of methicillin-resistant Staphylococcus aureus (MRSA) nasal surveillance swabs has not been well-described in children. This retrospective, cohort study yielded a negative predictive value of 99.4% for an initial negative MRSA nasal surveillance swab in 165 hospitalized children with a suspected infection and clinical cultures obtained from a likely site of infection.

Antibiotic use in hospitalized children is highly variable and often unnecessary, which puts children at risk of antibiotic-associated harms including adverse drug events, antibiotic resistance, and long-term chronic health problems. Antimicrobial stewardship programs reduce unnecessary antibiotic use through antimicrobial review, the development of guidelines and clinical decision-support tools, diagnostic stewardship, and other targeted interventions. Future directions for inpatient stewardship include increased collaboration with nurses, utilization of implementation science to close the gap between evidence-based recommendations and practice changes, and the extension of stewardship from large academic centers to smaller hospitals.