Role of postgraduate year 2 pharmacy residents in providing weekend antimicrobial stewardship coverage in an academic medical center

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Abstract

Purpose

The integration of pharmacy residents into an antimicrobial stewardship program (ASP) is described, and data on the residents' ASP interventions and outcomes are reported.

Summary

ASP coverage of nighttime, holiday, and weekend shifts is often provided by infectious diseases (ID) medical fellows and staff pharmacists, potentially leading to inconsistent stewardship practices. As part of an initiative by a large urban hospital to provide around-the-clock, comprehensive ASP services 7 days a week, postgraduate year 2 (PGY2) pharmacy residents in ID or critical care were assigned to provide ASP coverage on weekends. Over a 12-month period, residents providing ASP weekend coverage documented a total of 1,443 interventions, of which 1,000 (69%) were pursuant to 72-hour prospective audit and feedback review and 443 (31%) occurred during ASP phone coverage. A comparison of overall antimicrobial utilization (mean ± S.D. days of therapy [DOT] per 1,000 patient-days [PD]) before and after implementation of resident ASP coverage on weekends showed a decrease in aggregate antimicrobial use from 799.3 ± 46.8 to 740.7 ± 17.3 DOT/1,000 PD (a difference of 58.6 DOT/1,000 PD, p = 0.08), with a corresponding decline in the incidence of hospital-onset Clostridium difficile infection (from 1.18 cases to 0.9 case per 1,000 PD).

Conclusion

By expanding the hospital's ASP services by assigning PGY2 pharmacy residents to weekend coverage, the institution was able to provide high-level clinical care 7 days per week, which benefited both patients and PGY2 pharmacy residents while meeting national ASP regulatory requirements.

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