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Antimicrobial stewardship in residential aged care facilities: need and readiness assessment

Abstract

Background

Information about the feasibility, barriers and facilitators of antimicrobial stewardship (AMS) in residential aged care facilities (RACFs) has been scant. Exploring the prevailing perceptions and attitudes of key healthcare providers towards antibiotic prescribing behaviour, antibiotic resistance and AMS in the RACF setting is imperative to guide AMS interventions.

Methods

Semi-structured interviews and focus groups were conducted with key RACF healthcare providers until saturation of themes occurred. Participants were recruited using purposive and snowball sampling. The framework approach was applied for data analysis.

Results

A total of 40 nurses, 15 general practitioners (GPs) and 6 pharmacists from 12 RACFs were recruited. Five major themes emerged; perceptions of current antibiotic prescribing behaviour, perceptions of antibiotic resistance, attitude towards and understanding of AMS, perceived barriers to and facilitators of AMS implementation, and feasible AMS interventions. A higher proportion of GPs and pharmacists compared with nurses felt there was over-prescribing of antibiotics in the RACF setting. Antibiotic resistance was generally perceived as an issue for infection control rather than impacting clinical decisions. All key stakeholders were supportive of AMS implementation in RACFs; however, they recognized barriers related to workload and logistical issues. A range of practical AMS interventions were identified, with nursing-based education, aged-care specific antibiotic guidelines and regular antibiotic surveillance deemed most useful and feasible.

Conclusions

Areas of antibiotic over-prescribing have been identified from different healthcare providers’ perspectives. However, concern about the clinical impact of antibiotic resistance was generally lacking. Importantly, information gathered about feasibility, barriers and facilitators of various AMS interventions will provide important insights to guide development of AMS programs in the RACF setting.

Background

There is increasing evidence that the elderly population in residential aged care facilities (RACFs) serves as an important reservoir for multidrug-resistant (MDR) organisms [1, 2], with high antibiotic use causing selective pressure and encouraging the emergence of various MDR organisms [3, 4]. As antibiotic resistance in bacteria increases and the development pipeline of new antibiotics declines, judicious use of antibiotics through antimicrobial stewardship (AMS) programs has become critical across all parts of the healthcare system, including the RACF setting. Formal AMS programs have been increasingly established in the acute-care hospital setting, but remain relatively uncommon in RACFs [5].

Essentially, the need for AMS and the potential areas for AMS interventions are reliant upon existing antibiotic use and resistance patterns. For example, a study in Australian RACFs has shown less frequent use of broad-spectrum antibiotics such as fluoroquinolones [6] compared to long-term care facilities in the United States (US), where fluoroquinolone prescribing is widespread [7, 8]. Likewise, the magnitude of antibiotic resistance has been reported to vary across RACFs in different geographical areas [9]. Not surprisingly, surveys involving Nebraska and Irish long-term care facilities have reported very distinctive AMS practices, presumably because AMS interventions are tailored according to the needs and resources of individual institutions in different geographical areas [10, 11].

International guidelines for infection control and prevention have strongly recommended initiation of AMS programs in the RACF setting [12]; however, practical models for AMS in this setting remain poorly delineated. Adopting hospital-based AMS programs in the RACF setting may be unrealistic due to differences in organizational resources and antibiotic prescribing patterns between these two healthcare settings. Recent studies from the US reported that AMS interventions involving multidisciplinary teams with regular audits are effective in reducing inappropriate antibiotic prescribing in the long-term care setting; however, these studies were mainly single centre and their sustainability remains in question [13, 14]. To date, information about the feasibility, barriers and facilitators of AMS programs in RACFs has been scant. The perceived need and readiness for AMS interventions in the RACF setting can be explored via qualitative research that allows in-depth investigation into the social and environmental determinants of antibiotic prescribing practices [15]; however, such work had previously not been undertaken. In preparation for developing practical and sustainable AMS models in this setting, the current study explored the attitudes and perceptions of key healthcare providers towards AMS interventions in Australian RACFs.

Methods

Study population and setting

This is part of a larger study exploring key healthcare providers’ views about improving antibiotic use in the RACF setting. The study targeted primarily high-level care RACFs (i.e. nursing homes) affiliated with four major public healthcare service networks within metropolitan and regional Victoria, Australia. These residential care facilities deliver 24-hour nursing care to elderly residents requiring significant assistance in their activities of daily living. There was no institutional policy for antibiotic prescribing in any of the RACFs; however, intravenous antibiotic therapy when required is normally delivered via specialized support from hospitals.

Three major groups of healthcare providers servicing the participating RACFs were invited to participate, namely general practitioners (GPs), nurses and pharmacists. At these RACFs, the medical care is provided by off-site GPs (equivalent to family physicians in the US) from different practices, who visit residents periodically or upon request. There are significant roles for nursing staff in daily care of residents, including ringing GPs to request medical assessment. Prescription medicines, including antibiotics, require an order from the GPs and are supplied by external community pharmacies. Medication review for individual residents [known as Residential Medication Management Review (RMMR)] is normally performed on an annual basis by consultant pharmacists, however this does not involve audit of short-term antibiotic use.

Participant recruitment and data collection

Institutional ethics approvals from the human research ethics committees of all participating healthcare service networks and Monash University were obtained prior to participant recruitment. A combination of purposive and snowball sampling strategies were used for recruitment of different healthcare providers [16]. The aforementioned healthcare professionals with routine involvement in the antibiotic prescribing process were intentionally approached (i.e. purposive sampling), and some other participants were also recruited through recommendation by initial informants (i.e. snowball sampling). Informed consent was obtained from individual participants, and participation was voluntary.

Nursing staff in different clinical positions [senior executive nurses, nurse unit managers (NUMs), registered nurses (RNs)] were involved in either one-on-one interviews or focus groups. All NUMs and RNs were involved in daily care of residents, whilst the executive nursing staff were responsible at the policy-making level for quality improvement of resident care. Face-to-face or phone interviews were conducted with the GPs and pharmacists, depending on their preference. We used several triangulation strategies; we sought information from different stakeholders’ perspectives (i.e. data triangulation), performed onsite observation on the organizational workflow and documentations related to antibiotic prescribing (i.e. methodological triangulation), and explored views of participants from RACFs in different locations (i.e. environmental triangulation).

All interviews were conducted using a semi-structured interview guide, which was tailored to different healthcare providers (Additional files 1, 2 and 3). The interview guide was divided into three main domains (antibiotic prescribing, antibiotic resistance and AMS) whilst allowing flexibility to pursue particular issues by more in-depth discussion as they emerged from the interviews. All discussions were moderated by one or two interviewers (CJL and MK). Recruitment of key stakeholders from the four healthcare networks continued until data saturation (i.e. when no new relevant themes emerged). Participant recruitment and interviews were conducted between January and July 2013. All interviews were audio-recorded and transcribed verbatim by an independent, professional transcribing service.

Data analysis

Data were analyzed for emergent themes using the framework approach, as described elsewhere [17, 18]. This approach involved five stages: (i) familiarization with the data collected by detailing the interview recording and transcripts; (ii) identifying key issues and themes that construct a thematic framework; (iii) indexing (coding the data) into themes; (iv) charting by rearranging indexed data according to the thematic framework; and (v) mapping and interpreting the data. Data management of interview transcripts and recording was facilitated using Nvivo® 9.0 (QSR, Melbourne). All transcripts were verified against audio recordings by CJL and MK. Data analyses were carried out independently by the two researchers (CJL and MK) for cross-validation purpose, with peer-debriefing at regular intervals. Themes and codes were discussed at regular meetings involving all co-authors, where discrepancies were resolved and themes were finalized.

Results

Twelve high-level care RACFs within the four major healthcare networks participated. From these RACFs, 40 nursing staff [four executive nurses, 15 nurse unit managers (NUMs), and 21 registered nurses (RNs)], 15 GPs and six pharmacists consented to participate in the study. The majority of participants were interviewed individually, with 15 RNs participating in three focus groups (range 4–6 RNs per focus group). All except four interviews were conducted face-to-face with participants. The demographic characteristics of the participants are described in Table 1. Five major themes that illustrate the prevailing perceptions and attitudes towards the need and readiness for AMS program in this setting emerged:

Table 1 Demographic characteristics of participants

Perceptions of current antibiotic prescribing behaviour

There were mixed views about existing antibiotic prescribing behavior (Table 2). Several nurses and pharmacists believed that current antibiotic use in RACFs was not excessive; most indicated that perceived patient frailty or behavioral changes often precluded the potential strategy of withholding antibiotic treatment and observing for development of further clinical signs. Likewise, a few GPs felt that empiric prescribing of broad-spectrum antibiotics was fairly reasonable for the elderly population in RACFs (Table 2, Q1-Q3). In contrast, twelve of 15 GPs perceived that there was over-prescribing of antibiotics, with many admitting to prescribing antibiotics “just in-case” in light of the potential risk for patient deterioration if treatment was not initiated. A number of GPs indicated that pressure from nursing staff and family members was an important reason leading to unnecessary antibiotic prescribing (Table 2, Q4- Q5). Relatively fewer nurse participants were concerned about excessive antibiotic use among RACF residents. Those nurses who were concerned felt that there was liberal prescribing of antibiotics for futile reasons including viral illness and asymptomatic bacteriuria. Some were concerned about frequent empiric antibiotic prescribing without microbiological investigations to confirm causative organisms (Table 2, Q6-Q7). The main concern raised by participating pharmacists was about prolonged durations of antibiotic treatment (Table 2, Q8). They indicated that antibiotics were generally prescribed for an average of 7–10 days; however, it was not uncommon for antibiotics to be administered for longer periods when doctors had not documented a planned cessation date for treatment of acute infections, or where antibiotics were utilized for long-term prophylaxis against infection.

Table 2 Perceptions of current antibiotic prescribing behaviour and antibiotic resistance in the residential aged care facility setting

Perceptions of antibiotic resistance in RACFs

There were also mixed perceptions about antibiotic resistance (Table 2). Several GPs claimed they had not encountered many MDR organisms within their clinical practice; however, they admitted that cultures of relevant clinical samples were seldom requested. Similarly, the majority of nursing staff did not see this as an important issue, as they believed it was encountered less frequently than in the hospital setting, and often did not change management of residents within the RACFs (Table 2, Q9-Q10). In comparison, about half of the GPs believed that antibiotic resistance was an emerging issue in RACFs, reporting that MDR organisms were often seen in residents with recurrent urinary tract infections (especially those with indwelling urinary catheters), long-term antibiotic prophylaxis and chronic wound colonization (Table 2, Q11-Q12). However, only a minority of GPs were concerned that antibiotic resistance would affect their choice of empiric antibiotics. Whereas from the nurses’ perspective, only a small proportion were worried about the increasing rates of MDR organisms; their main concerns were about low staff awareness and inadequacy of existing infection control efforts in preventing MDR organism transmission as opposed to clinical impact on residents (Table 2, Q13).

Attitude towards and understanding of AMS

The majority of participating nursing staff were unaware of the concept of AMS. In comparison, more GPs and pharmacists were aware of AMS, although they generally felt that AMS was relatively new in the RACF setting. AMS refers to integrated activities that help to optimize antibiotic therapy, ensuring the best clinical outcomes whilst minimizing the risk for the emergence of antimicrobial resistance. When this concept of AMS was explained, in general, all key stakeholders were supportive of AMS programs in RACFs. Amongst GPs, the main value of AMS was thought to be in promoting evidence-based practices for antibiotic prescribing in this setting (Table 3, Q1). All executive nursing staff felt that AMS was applicable, and welcomed future intervention as part of quality improvement strategies in their RACFs (Table 3, Q2). Likewise, the NUMs and RNs felt that AMS interventions would be helpful as an additional source of educational support for nurses, given their relative lack of knowledge regarding antibiotic use (Table 3, Q3-Q4). The pharmacists were also supportive of AMS interventions, particularly to achieve more uniformity in antibiotic prescribing and consistency with adopting guidelines (Table 3, Q5-Q6).

Table 3 Perceptions of implementation of antimicrobial stewardship from different healthcare providers’ perspectives

Perceived barriers to and facilitators of AMS interventions

A number of perceived barriers and facilitators in relation to implementation of AMS interventions were raised. From the GPs’ perspective, several raised concerns about the potential for doctor autonomy to hinder acceptance of institutional policies and guidelines. Heterogeneity in prescribing practices amongst GPs from different practices pose another barrier, thus having fewer GPs with greater patient loads working in each facility would promote more consistent prescribing practices (Table 3, Q7-Q8). Nursing staff had mixed attitudes. The executive nursing staff anticipated that AMS interventions might not be easily accepted by nursing staff in view of their high workload. Conversely, most of the NUMs did not foresee major resistance from nursing staff given their past experiences with other quality improvement initiatives, instead, having more concern about GP acceptance of any AMS interventions (Table 3, Q9-Q10). It emerged that nursing staff would need to play an essential role in delivering any future AMS intervention, with facilitation of AMS programs being driven by on-site staff such as NUMs or clinical nurse coordinators. The nursing staff would be in a good position to disseminate relevant information to family members and GPs (Table 3, Q11-Q12). Both community and consultant pharmacists perceived several logistical barriers to providing additional clinical support, in particular, their lack of on-site availability, inadequate access to patients’ clinical information, and limited communication with GPs. All consultant pharmacists were willing to undertake additional clinical roles; however, they acknowledged that current funding resources offered little prospect for this to occur (Table 4, Q13-Q14).

Feasible AMS interventions

Three major areas of AMS interventions emerged as potentially useful and practical in the RACF setting (Table 4). The most commonly suggested intervention was ongoing education to nurses, GPs and family members of residents, with the objective of promoting awareness of judicious antibiotics use amongst those working in the RACFs (Table 4, Q1-Q3). Various suggestions for how this could be achieved were identified, including in-service training (for nurses), web-based education, provision of educational material in poster or brochure form, and invited speaker sessions. Another area identified was the emphasis on evidence-based practice around aged-care specific management. Importantly, more than half of the GPs indicated a need for aged care-specific antibiotic guidelines, as current guidelines were thought to be lacking evidence and recommendations specific to the aged care population. The nursing staff perceived a need for consistent, RACF-based guidance and support on the matter of infection management; for example, a clinical protocol guiding the management of symptomatic versus asymptomatic bacteriuria was frequently recommended (Table 4, Q4-Q6). The third main potential area for future AMS identified was surveillance and auditing of antibiotic use. It was believed that monitoring of antibiotic use with regular feedback to GPs would be helpful to guide and target reduction of specific antibiotic use, and consultant pharmacists were deemed most suitable to perform such activity (Table 4, Q7-Q9). In contrast to more proactive hospital-based AMS interventions (such as pre-authorization of broad-spectrum antibiotics or review by infectious diseases teams), passive surveillance of antibiotic use was thought to be sufficient and more practical in this setting. Other suggestions included additional staff resources via introduction of the nurse practitioner model, and re-institution of aged care interest groups to further support and educate GPs.

Table 4 Feasible antimicrobial stewardship interventions deemed useful by three key stakeholders

Discussion

To our knowledge, this is the first study exploring the perceptions and attitudes of a range of healthcare providers towards antibiotic prescribing behaviour, antibiotic resistance, and AMS implementation in the RACF setting. A greater proportion of GPs and pharmacists than nursing staff felt that there was over-prescribing of antibiotics, suggesting a lack of awareness amongst nurses about potential antibiotic misuse among this population. Antibiotic resistance and the emergence of MDR organisms were perceived as more of a concern from the infection control perspective as opposed to impacting empiric antibiotic selections. Additionally, this study has highlighted the prevailing attitudes amongst key healthcare providers that AMS interventions were needed and deemed useful in the RACF setting. A number of perceived barriers to AMS programs were identified, in particular, nursing staff workload and the logistical issues of off-site GPs and pharmacists. A range of potential AMS interventions have been suggested to provide insights into feasible AMS model for the RACF setting.

Published data describing the key stakeholders’ views of antibiotic prescribing and antibiotic resistance have mainly focused on the general practice setting, with limited information from the RACF setting [18, 19]. A study by Walker et al. has explored the views of the physicians and nurses about antibiotic prescribing in Canadian RACFs but it focused specifically on treatment for asymptomatic bacteriuria, reporting that education about asymptomatic bacteriuria was viewed as an important priority by both physicians and nurses [20]. In addition to concern about antibiotic treatment for asymptomatic bacteriuria, our study also identified a need for education to target other infective issues, including the widespread prescribing for viral upper respiratory tract infections, and repeated or prolonged antibiotic use without microbiological investigation. The current study found that the overuse of antibiotics in the Australian RACFs context was thought to be mainly related to widespread empiric prescribing or unnecessary antibiotic treatment, as opposed to the over-prescribing of broad-spectrum antibiotics such as intravenous antibiotics and oral fluoroquinolones that was more frequently reported in the US studies [7, 8].

Previous studies have reported that increasing the awareness about antibiotic resistance would potentially influence GPs’ decisions in selecting antibiotics, underlining the importance of knowledge about MDR organisms in assisting clinical decisions [18, 21, 22]. Furthermore, education that promotes awareness about antibiotic resistance is likely to encourage more microbiological testing to identify causative organisms before initiating antibiotic treatment. Several international guidelines suggest that provision of antibiograms by local microbiology laboratories as fundamental requirement for an AMS program in the RACF setting [12, 23]. However, the need for antibiograms to guide empiric antibiotic therapy has not been suggested as a useful or practical AMS initiative by any healthcare provider that participated in this study. The feasibility of this strategy may be hindered by limited microbiological investigations and involvement of multiple external pathology laboratories.

AMS interventions in the RACF setting have been few despite mounting evidence of inappropriate antibiotic prescribing among this elderly population [9, 24]. Existing guidelines about the implementation of AMS have primarily been limited to the acute-care hospital setting [25]. An intensive form of AMS intervention with involvement of infectious diseases physicians or clinical pharmacists has been adopted in Veterans Affairs long-term care facilities in the US [14]; however, most key stakeholders in the present study indicated that such AMS interventions are not practical or necessary in the Australian RACF setting. From the current work, an approach to AMS tailored to the needs of key healthcare providers in RACFs is proposed (Table 5). Multifaceted interventions are likely to be most effective; however, such interventions should be tailored to the resources and expertise in individual RACFs. Overall, the important role of nursing staff in the day-to-day practice of AMS in RACFs cannot be under-estimated, and could function effectively if supplemented by education, infection management algorithms and training in the use of antibiotic utilization surveillance.

Table 5 Potential areas of focus for antimicrobial stewardship interventions as proposed by study participants

This study has predominantly involved high-level care hospital-affiliated RACFs. There may be differences in antibiotic prescribing behaviour in comparison to low-level care or private RACFs, and thus this study could be replicated more widely to other RACF setting for further exploration. Given the differences in long-term healthcare delivery models between different countries [26], the findings and suggestions in the current study may not be generalizable outside the Australian setting. Nevertheless, the current findings are likely to be of interest to many, especially those who are closely affiliated with RACFs. Participation in this study was voluntary, thus the expression of personal perceptions may be skewed towards those who are more involved with or concerned about AMS. In order to minimize the potential bias, we have explored both the positive and negative views from a range of key stakeholders, and continued the recruitment and data analysis until we achieved data saturation amongst all stakeholder groups.

Conclusions

In summary, AMS interventions have been deemed applicable and useful by the key stakeholder groups involved in the provision of healthcare in RACFs. Potential barriers and facilitators for AMS interventions have been highlighted, providing important information to guide allocation of future AMS resources. More importantly, the major areas of AMS deemed most needed and practical in the RACF setting have been identified to guide the development of a feasible AMS model.

Authors’ information

Caroline Marshall and David CM Kong are senior authors.

Abbreviations

AMS:

Antimicrobial stewardship

RACFs:

Residential aged care facilities

GP:

General practitioners

MDR:

Multidrug-resistant

US:

United States

RMMR:

Residential medication management review

NUM:

Nurse unit manager

RN:

Registered nurse.

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Acknowledgements

We thankfully acknowledge the funding support from the Australian Unity Heritage Fellowship from the Australian Unity Foundation. The authors would also like to thank all participants of the interviews and focus groups who contributed to this study.

A PhD scholarship to CJL by University of Science Malaysia is gratefully acknowledged.

Part of this manuscript was presented at the 15th Annual Scientific Meeting of Australian Society of Antimicrobials, Melbourne, 20th - 22nd Feb 2014.

Author information

Correspondence to Caroline Marshall.

Additional information

Competing interests

AYP has been to one advisory board meeting for Abbott Molecular, Ortho-McNeil-Janssen, Pfizer and AstraZeneca, and has received a speaker’s honorarium from AstraZeneca and Merck Sharp & Dohme (MSD) for one presentation each (not related to the current work). DCMK has sat on advisory boards for MSD and Pfizer, and receives financial/travel support (not related to the current work) from Pfizer, Roche, Novartis, MSD and Gilead Sciences. Other authors: none declared.

Authors’ contributions

CJL and MK contributed to the conception and design of the study, involved actively in participant recruitment and conducted interviews, performed data analysis and drafted the manuscript. RLS, KLB, NDF, NB, ACC and AYP participated in refining the study design, assisted in participant acquisition, data interpretation as well as critically reviewing the manuscript. CM and DCMK involved in the study conception, clinical interpretation, critically appraising the manuscript and taking responsibility for the paper as a whole. All authors read and approved the final manuscript.

Electronic supplementary material

Additional file 1: Semi-structured interview guide for general practitioners.(PDF 216 KB)

Additional file 2: Semi-structured interview guide for nursing staff.(PDF 209 KB)

Additional file 3: Semi-structured interview guide for pharmacists.(PDF 155 KB)

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Keywords

  • Antibiotic prescribing
  • Antibiotic resistance
  • Antimicrobial stewardship
  • Residential care
  • Qualitative research