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        Antimicrobial Stewardship Practices in Michigan Long-Term Care Facilities
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        Antimicrobial Stewardship Practices in Michigan Long-Term Care Facilities
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To the Editor—Antimicrobial resistance is a public health crisis. A major strategy to combat antimicrobial resistance in the recent US government’s National Action Plan for Combating Antibiotic-Resistant Bacteria is the implementation of antimicrobial stewardship programs (ASPs). 1 Development of ASPs in long-term care facilities (LTCF) has been limited despite the heavy use of antimicrobials and high prevalence of resistant organisms and Clostridium difficile infection in these settings. 2 6

The US population continues to age, with an estimated 21% of the population by 2040 consisting of persons 65 years of age and older. 7 There are currently 15,700 nursing homes in the United States, with an estimated 1.4 million residents. 8 A reported 47% to 79% of LTCF residents receive antimicrobials each year. 4 Given the call to implement ASPs across the continuum of care and limited data on antimicrobial stewardship practices in LTCF, we assessed these practices throughout Michigan.

The Michigan Department of Health and Human Services and a team of infectious disease physicians and pharmacists distributed a web-based survey to LTCF from August to September, 2014, through multiple listservs: Michigan Society for Infection Prevention and Control, Association for Professionals in Infection Control and Epidemiology–Great Lakes Chapter, Michigan Healthcare Associated Infections Prevention Advisory Committee, Michigan Chapter of the National Association Directors of Nursing Administration, and MPRO (formerly Michigan’s healthcare quality improvement organization). Survey questions characterized current antimicrobial stewardship practices, educational and stewardship-related needs, and ways that our team could provide assistance. For this survey, an ASP was defined as coordinated interventions to promote judicious antimicrobial use.

Responses were received from 86 LTCF, and 45 (52%) had greater than 100 licensed beds (median size, 111 beds). ASP policies and procedures were reported in 60 (75%) of 80 LTCF. However, only 15 (23%) of 66 facilities reported having a formal ASP with dedicated staffing. Of 41 responding LTCF, 23 (56%) reported having a stewardship or similar committee that monitored antimicrobial utilization. Team members involved in monitoring the ASP or antimicrobial utilization included infection preventionists (85%), medical directors (48%), nurses (48%), and pharmacists (43%).

Thirty-eight respondents described which antimicrobials their policies and procedures addressed. These responses included all antimicrobials in 17 (45%), antimicrobials based on resistance profiles in 16 (42%), antimicrobials used in C. difficile infection treatment in 14 (37%), broad-spectrum antimicrobials in 11 (29%), and high cost antimicrobials in 10 (26%). Of 39 responding LTCF, strategies to improve antimicrobial prescribing included clinical review in 35 (90%), antimicrobial de-escalation in 19 (49%), formulary restriction in 14 (36%), and intravenous to oral conversion (35% [13/37]). Thirty-nine (52%) of 75 respondents monitored or quantified antimicrobial consumption while a similar percentage (58% [43/74]) reviewed antibiogram data. Of 39 LTCF, 29 (74%) developed process improvements plans if high rates of inappropriate antimicrobial utilization were identified.

Obstacles for implementation of ASPs in 26 responding LTCF included lack of knowledge regarding ways to initiate a program in 14 (54%), absence of a proposal in 13 (50%), staffing constraints in 2 (8%), and lack of prioritization in 2 (8%). Overall, LTCFs were interested in educational opportunities surrounding antimicrobial stewardship. Of the 47 facilities interested in training, 34 (72%) desired training for clinical guideline development, 32 (68%) sought education on antimicrobial de-escalation, 29 (62%) requested assistance measuring outcomes, 27 (57%) desired training on antimicrobial dose optimization, 27 (57%) requested assistance developing buy-in from staff, and 17 (36%) desired support from administration.

More than half of responding LTCF had greater than 100 licensed beds, and most (75% [60/80]) reported having ASP policies and procedures. However, few LTCF (23% [15/66]) had a formal ASP with dedicated staffing. Our results are consistent with what others have reported. LTCF have been slower to adopt stewardship strategies and measures given lack of electronic resources and funding as well as limited evidenced-based stewardship strategies specific to LTCF. 2 , 3 , 6 , 9 The long-term care environment is complex. There is often a lack of on-site diagnostic testing and many prescriptions are called by telephone order, frequently by on-call providers, without a preceding physical examination. 10 There is a lack of infectious diseases expertise, making concurrent review and adjustment of antimicrobial therapy challenging.

In contrast to acute care facilities, the team members most frequently involved in the ASP or monitoring antimicrobial utilization in LTCF were infection preventionists, medical directors, and nurses. LTCF have variable models of physician presence with the largest proportion of in-person staffing consisting of nursing. 4 As noted by our responses, there is an urgent need for antimicrobial stewardship education in LTCF because there is a lack of real-time infectious diseases physician and pharmacist expertise.

Our study has some limitations. Michigan has roughly 440 LTCFs and skilled nursing facilities. It proved difficult to quantify the exact number and types of facilities reached by the survey. Though we attempted to cover multiple groups and disciplines, some facilities may not be a part of the listservs used for distribution. As a crude estimate, our response rate was 20% (86/440); however, this could not be confirmed. Second, facilities with an ASP may be more likely to respond, leading to selection bias.

Antimicrobials are commonly prescribed in LTCF. The extensive use of antimicrobials results in the risk of not only adverse drug reactions, but also the promotion of antimicrobial resistance and C. difficile infection. Antimicrobial stewardship is relatively uncommon in surveyed LTCF across Michigan. Education and training pertaining to antimicrobial stewardship are sorely needed for LTCF. Development of ASPs tailored to the needs and resources of LTCFs will be essential to prevent further emergence of antimicrobial resistance across the continuum of care.


Financial support. None reported.

Potential conflicts of interest. All authors report no conflicts relevant to this article.


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