• Monique Payne-Cardona, Valerie A San Luis, Roshanak Aazami, Mira Dermendjieva, Melissa Erin, Jason Kirkwood, Christopher Tong, Gregory Marks, Ethan A Smith, Sam S Torbati, and James F Gilmore.
• Department of Pharmacy Services, Amita Health Resurrection Medical Center Chicago, 7435 W Talcott Ave, Chicago, IL 60631, USA. Electronic address: monique.paynecardona@gmail.com.
• Am J Emerg Med. 2021 Dec 1; 50: 160-166.

Study ObjectiveDetermine whether an expanded emergency medicine (EM) pharmacist scope of practice reduces the frequency of major delays in subsequent antibiotic administration in patients boarded in the emergency department (ED).MethodsA pre-post, quasi-experimental study conducted from November 2019-March 2020 at a single-center tertiary academic medical center following the implementation of an expanded EM pharmacist scope of practice. Adult patients were included if they received an initial antibiotic dose in the ED and deemed to be high-risk. Subsequent antibiotic doses were reordered by EM pharmacists for up to 24-h after the initial order pending ED length of stay (LOS). The historical control group consisted of retrospective chart review of cases from the previous year.ResultsThe study identified that of the 181 participants enrolled, major delays in subsequent antibiotic administration occurred in 13% of the intervention group and 48% of the control group (p < 0.01). When compared to the control group, the intervention group had a significant decrease in the number of delays among antibiotics dosed at 6-h (39% vs 13%) and 8-h (60% vs 8%) intervals. For antibiotics dosed at 12-h intervals, no statistically significant difference was observed between the control and intervention groups respectively (19% vs 5%). A statistically significant lower incidence of in-hospital mortality was observed in the intervention group (3% vs 11%, p = 0.02). In the intervention group, 97% of patients received subsequent antibiotic doses while boarded in the ED, compared to 65% in the control group (<0.01).ConclusionExpanding EM pharmacist scope of practice was associated with a significant reduction in the frequency of major delays in subsequent antibiotic administration as well as a decreased incidence of hospital mortality.Copyright © 2021 Elsevier Inc. All rights reserved.

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