• Jared Baxa, Erin McCreary, Lucas Schulz, and Michael Pulia.
• University of Utah, Health Department of Pharmacy Services, 50 North Medical Drive, Room A-050, Salt Lake City, UT 84132, USA. Electronic address: Jared.Baxa@utah.edu.
• Am J Emerg Med. 2020 Feb 1; 38 (2): 321-324.

IntroductionCellulitis is commonly treated in the emergency department (ED). Oritavancin is a novel, broad-spectrum antibiotic which provides an entire treatment course for cellulitis with one dose. However, optimal ED prescribing scenarios for oritavancin have not been well defined. The purpose of this study was to identify a population of ED patients with cellulitis who would be most appropriate to receive oritavancin.MethodsThis was a descriptive, retrospective study conducted at a Midwest healthcare system with two EDs. Over a 1 year period, all adult patients admitted from the ED to an inpatient ward with an ICD-10 diagnosis for cellulitis were reviewed using a priori defined criteria to identify potentially avoidable admissions (PAA). Potentially avoidable admissions were further characterized and compared to the non-avoidable admission population. Identified patient-specific criteria for PAAs were used to develop oritavancin inclusion/exclusion criteria and a case selection flowchart.ResultsEighty-six patients were identified during the study period. Nine patients (10.5%) were deemed a PAA. A majority of the PAA population had at least one risk factor for treatment failure (55% with diabetes mellitus) and this group was significantly younger than the non-PAA group (42.2 vs 58.6 years; P = 0.01). There were no differences between the PAA group and the non-PAA group in regard to non-age demographics, other risk factors for outpatient treatment failure, comorbidities, or length of stay.ConclusionOritavancin is an outpatient treatment alternative for cellulitis patients whose only justification for planned admission is the presence of one or more risk factors for treatment failure.Copyright © 2019 Elsevier Inc. All rights reserved.

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