Decrease in Antibacterial Use and Facility-Level Variability After the Introduction of Guidelines and Implementation of Physician-Pharmacist-Nurse Quality Circles in Swiss Long-term Care Facilities.

Plüss-Suard, Catherine; Niquille, Anne; Héquet, Delphine; Krähenbühl, Séverine; Pichon, Renaud; Zanetti, Giorgio; Bugnon, Olivier; Petignat, Christiane (2020). Decrease in Antibacterial Use and Facility-Level Variability After the Introduction of Guidelines and Implementation of Physician-Pharmacist-Nurse Quality Circles in Swiss Long-term Care Facilities. Journal of the American Medical Directors Association, 21(1), pp. 78-83. Elsevier 10.1016/j.jamda.2019.05.016

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OBJECTIVES

The objective of this study is to describe antibacterial use in long-term care facilities and to investigate the determinants of use.

DESIGN

This study is a quality improvement study conducted from January 2011 to December 2016.

SETTING

Long-term care facilities in the canton of Vaud, Western Switzerland, were investigated.

PARTICIPANTS

Twenty-three long-term care facilities were included in this study.

INTERVENTION

The intervention included the publication of local guidelines on empirical antibacterial therapy and the implementation of physician-pharmacist-nurse quality circles.

MEASURES

The main outcome was antibacterial use, expressed as defined daily doses (DDD) per 1000 beds per day. Statistical analyses were performed through a 1-level mixed model for repeated measurements.

RESULTS

Antibacterial use decreased from 45.6 to 35.5 DDD per 1000 beds per day (-22%, P < .01) over the 6-year study period, which was mostly explained by reduced fluoroquinolone use (-59%, P < .001). A decrease in range of use among LTCFs was observed during the study period, and 27% of antibacterial use was related to the WATCH group (antibiotics with higher toxicity concerns and/or resistance potential) according to the AWaRe categorization of the WHO, decreasing from 17.3 DDD per 1000 beds per day to 9.5 (-45%) over the study period. The use of antibacterials from the RESERVE group ("last-resort" treatment options) was very low.

CONCLUSION AND IMPLICATIONS

A reduction in facility-level antibacterial use and in variability across LTCFs was observed over the study period. The dissemination of empirical antibacterial prescription guidelines and the implementation of physician-pharmacist-nurse quality circles in all LTCFs of the canton of Vaud likely contributed to this reduction. Antibacterials from the WATCH group still represented 27% of the total use, providing targets for future antibiotic stewardship activities.

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