Pediatric-specific antimicrobial susceptibility data and empiric antibiotic selection.
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OBJECTIVE: Duke University Health System (DUHS) generates annual antibiograms combining adult and pediatric data. We hypothesized significant susceptibility differences exist for pediatric isolates and that distributing these results would alter antibiotic choices. METHODS: Susceptibility rates for Escherichia coli isolates from patients aged ≤12 years between July 2009 and September 2010 were compared with the 2009 DUHS antibiogram. Pediatric attending and resident physicians answered case-based vignettes about children aged 3 months and 12 years with urinary tract infections. Each vignette contained 3 identical scenarios with no antibiogram, the 2009 DUHS antibiogram, and a pediatric-specific antibiogram provided. Effective antibiotics exhibited >80% in vitro susceptibility. Frequency of antibiotic selection was analyzed by using descriptive statistics. RESULTS: Three hundred seventy-five pediatric isolates were identified. Pediatric isolates were more resistant to ampicillin and trimethoprim-sulfamethoxazole (TMP-SMX) and less resistant to amoxicillin-clavulanate and ciprofloxacin (P < .0005 for all). Seventy-five resident and attending physicians completed surveys. In infant vignettes, physicians selected amoxicillin-clavulanate (P < .05) and nitrofurantoin (P < .01) more often and TMP-SMX (P < .01) less often with pediatric-specific data. Effective antibiotic choices increased from 68.6% to 82.2% (P = .06) to 92.5% (P < .01) across scenarios. In adolescent vignettes, providers reduced TMP-SMX use from 66.2% to 42.6% to 19.0% (P < .01 for both). Effective antibiotic choices increased from 32.4% to 57.4% to 79.4% (P < .01 and P = .01). CONCLUSIONS: Pediatric E. coli isolates differ significantly in antimicrobial susceptibility at our institution, particularly to frequently administered oral antibiotics. Knowledge of pediatric-specific data altered empirical antibiotic choices in case vignettes. Care of pediatric patients could be improved with use of a pediatric-specific antibiogram.
Drug Resistance, Bacterial
Escherichia coli Infections
Microbial Sensitivity Tests
Urinary Tract Infections
Published Version (Please cite this version)10.1542/peds.2012-0563
Publication InfoBoggan, Joel; Navar-Boggan, AM; & Jhaveri, R (2012). Pediatric-specific antimicrobial susceptibility data and empiric antibiotic selection. Pediatrics, 130(3). pp. e615-e622. 10.1542/peds.2012-0563. Retrieved from https://hdl.handle.net/10161/14592.
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Assistant Professor of Medicine
I am a hospital medicine physician interested in quality improvement, patient safety, and medical education. My current QI and research projects include work on readmissions, clinical documentation improvement, ORYX measures, medication reconciliation, and optimization of chronic kidney disease and cardiovascular disease management and referral patterns. I oversee QI education and projects for the Internal Medicine Residency Program at Duke as the Associate Program Director for Quality Imp