Outcomes of multisite antimicrobial stewardship programme implementation with a shared clinical decision support system

Effects of a Pharmacist-Designed Clinical Decision Support System on Antimicrobial Stewardship

BACKGROUND

 Clinical decision support systems (CDSSs) are computer applications, which can be applied to give guidance to practitioners in antimicrobial stewardship (AS) activities; however, further information is needed for their optimal use.

OBJECTIVES

 Our objective was to analyze the implementation of a CDSS program in a second-level hospital, describing alerts, recommendations, and the effects on consumption and clinical outcomes.

METHODS

 In October 2020, a pharmacist-driven CDSS designed for AS was implemented in a second-level hospital. The program provides a list of alerts related to antimicrobial treatment and microbiology, which were automatized for revision by the AS professionals. To analyze the implementation of the CDSS, a pre-post-intervention, retrospective study was designed. AS-triggered alerts and recommendations (total number and rate of acceptance) were compiled. The effect of the CDSS was measured using antimicrobial consumption, duration of antimicrobial treatments, in-hospital mortality, and length of stay (LOS) for patients admitted for infectious causes.

RESULTS

 The AS team revised a total of 7,543 alerts and 772 patients had at least one recommendation, with an acceptance rate of 79.3%. Antimicrobial consumption decreased from 691.1 to 656.8 defined daily doses (DDD)/1,000 beds-month (p = 0.04) and the duration of antimicrobial treatment from 3.6 to 3.3 days (p < 0.01). In-hospital mortality decreased from 6.6 to 6.2% (p = 0.46) and mean LOS from 7.2 to 6.2 days (p < 0.01).

CONCLUSION

 The implementation of a CDSS resulted in a significant reduction of antimicrobial DDD, duration of antimicrobial treatments, and hospital LOS. There was no significant difference in mortality.

Expanding access to veterinary clinical decision support in resource-limited settings: a scoping review of clinical decision support tools in medicine and antimicrobial stewardship

Introduction

Digital clinical decision support (CDS) tools are of growing importance in supporting healthcare professionals in understanding complex clinical problems and arriving at decisions that improve patient outcomes. CDS tools are also increasingly used to improve antimicrobial stewardship (AMS) practices in healthcare settings. However, far fewer CDS tools are available in lowerand middle-income countries (LMICs) and in animal health settings, where their use in improving diagnostic and treatment decision-making is likely to have the greatest impact. The aim of this study was to evaluate digital CDS tools designed as a direct aid to support diagnosis and/or treatment decisionmaking, by reviewing their scope, functions, methodologies, and quality. Recommendations for the development of veterinary CDS tools in LMICs are then provided.

Methods

The review considered studies and reports published between January 2017 and October 2023 in the English language in peer-reviewed and gray literature.

Results

A total of 41 studies and reports detailing CDS tools were included in the final review, with 35 CDS tools designed for human healthcare settings and six tools for animal healthcare settings. Of the tools reviewed, the majority were deployed in high-income countries (80.5%). Support for AMS programs was a feature in 12 (29.3%) of the tools, with 10 tools in human healthcare settings. The capabilities of the CDS tools varied when reviewed against the GUIDES checklist.

Discussion

We recommend a methodological approach for the development of veterinary CDS tools in LMICs predicated on securing sufficient and sustainable funding. Employing a multidisciplinary development team is an important first step. Developing standalone CDS tools using Bayesian algorithms based on local expert knowledge will provide users with rapid and reliable access to quality guidance on diagnoses and treatments. Such tools are likely to contribute to improved disease management on farms and reduce inappropriate antimicrobial use, thus supporting AMS practices in areas of high need.

Antimicrobial Stewardship: A Correct Management to Reduce Sepsis in NICU Settings

The discovery of antimicrobial drugs has led to a significant increase in survival from infections; however, they are very often prescribed and administered, even when their use is not necessary and appropriate. Newborns are particularly exposed to infections due to the poor effectiveness and the immaturity of their immune systems. For this reason, in Neonatal Intensive Care Units (NICUs), the use of antimicrobial drugs is often decisive and life-saving, and it must be started promptly to ensure its effectiveness in consideration of the possible rapid evolution of the infection towards sepsis. Nevertheless, the misuse of antibiotics in the neonatal period leads not only to an increase in the development and wide spreading of antimicrobial resistance (AMR) but it is also associated with various short-term (e.g., alterations of the microbiota) and long-term (e.g., increased risk of allergic disease and obesity) effects. It appears fundamental to use antibiotics only when strictly necessary; specific decision-making algorithms and electronic calculators can help limit the use of unnecessary antibiotic drugs. The aim of this narrative review is to summarize the right balance between the risks and benefits of antimicrobial therapy in NICUs; for this purpose, specific Antimicrobial Stewardship Programs (ASPs) in neonatal care and the creation of a specific antimicrobial stewardship team are requested.

A Prospective Quasi-Experimental Study of Multifaceted Interventions Including Computerized Drug Utilization Evaluation to Improve an Antibiotic Stewardship Program

OBJECTIVE

This study aimed to determine and evaluate interventions that improve an antibiotic stewardship program (ASP) in reduction of the amount of antibiotic use and errors in drug utilization evaluation (DUE) form completion.

METHODS

A prospective quasi-experimental study was conducted to evaluate the effectiveness of the multifaceted interventions (preauthorization with computerized DUE, self-supervised checklists, and short active reminders of the antibiotic guidelines recommendations) incorporating an ASP among hospitalized internal medicine patients in a Thai tertiary care center. The preintervention period was from January to December 2018, and the postintervention period was from February 2019 to January 2020.

RESULTS

A total of 9188 and 9787 patient data were analyzed during the preintervention and postintervention periods, respectively. The overall median antibiotic use (defined daily dose/1000 bed-days) was significantly decreased in the postintervention period compared with the preintervention period (867.68 versus 732.33; P < 0.001). The reduction in antibiotic use was predominantly observed among broad-spectrum antibiotics, including cefoperazone/sulbactam (15.35 versus 9.75; P = 0.04), cefepime (13.09 versus 6.37; P = 0.003), ciprofloxacin (32.99 versus 17.83; P < 0.001), piperacillin/tazobactam (99.23 versus 91.93; P = 0.03), meropenem (2.01 versus 0.99; P < 0.001), imipenem/cilastatin (9.53 versus 4.59; P = 0.04), and colistin (74.70 versus 22.34; P < 0.0001). The overall rate of errors in DUE form completion was significantly decreased after the intervention (40% versus 28%; P < 0.001). The incidence of carbapenem-resistant Enterobacteriaceae infections/colonization was significantly lower in the postintervention period (0.27 versus 0.12/1000 bed-days; P = 0.02).

CONCLUSIONS

The study multifaceted interventions incorporating ASP were associated with significant reduction in the amount of broad-spectrum antibiotic use, DUE form completion errors, and incidence of carbapenem-resistant Enterobacteriaceae infection/colonization.

Antibiotic Use in Korean Children Diagnosed With Acute Bronchiolitis: Analysis of the National Health Insurance Reimbursement Data

BACKGROUND

Acute bronchiolitis, the most common lower respiratory tract infection in infants, is mostly caused by respiratory viruses. However, antibiotics are prescribed to about 25% of children with acute bronchiolitis. This inappropriate use of antibiotics for viral infections induces antibiotic resistance. This study aimed to determine the antibiotic prescription rate and the factors associated with antibiotic use in children with acute bronchiolitis in Korea, where antibiotic use and resistance rates are high.

METHODS

Healthcare data of children aged < 24 months who were diagnosed with acute bronchiolitis between 2016 and 2019 were acquired from the National Health Insurance system reimbursement claims data. Antibiotic prescription rates and associated factors were evaluated.

RESULTS

A total of 3,638,424 visits were analyzed. The antibiotic prescription rate was 51.8%, which decreased over time (P < 0.001). In the multivariate analysis, toddlers (vs. infants), non-capital areas (vs. capital areas), primary clinics and non-tertiary hospitals (vs. tertiary hospitals), inpatients (vs. outpatients), and non-pediatricians (vs. pediatricians) showed a significant association with antibiotic prescription (P < 0.001). Fourteen cities and provinces in the non-capital area exhibited a wide range of antibiotic prescription rates ranging from 41.2% to 65.4%, and five (35.7%) of them showed lower antibiotic prescription rates than that of the capital area.

CONCLUSION

In Korea, the high antibiotic prescription rates for acute bronchiolitis varied by patient age, region, medical facility type, clinical setting, and physician specialty. These factors should be considered when establishing strategies to promote appropriate antibiotic use.

Regulating antimicrobial use within hospitals: A qualitative study

OBJECTIVES

To examine how regulatory structures and processes focused on antimicrobial stewardship and antimicrobial resistance are experienced by hospital managers and clinicians.

METHODS

Forty-two hospital managers and clinicians working within accreditation and antimicrobial stewardship teams in three Australian hospitals participated in individual in-depth interviews. Thematic analysis was performed.

RESULTS

Thematic analysis revealed participants' experiences of hospital antimicrobial regulation and their perceptions of what would be required for meaningful antimicrobial optimisation. Theme 1: Experience of regulation of antimicrobials within hospitals: Participants described an increased profile of antimicrobial resistance with inclusion in regulatory requirements, but also the risks of bureaucratic manoeuvring to meet standards rather than governance-inducing systemic changes. Theme 2: Growth of accreditation processes and hospitals over time: Both regulatory requirements and hospitals were described as evolving over time, each manoeuvring in response to each other (e.g. development of short notice accreditation). Theme 3: Perceived requirements for change: Participants perceived a need for top-down buy-in, resource prioritisation, complex understanding of power and influence on clinician behaviour, and a critical need for medical engagement.

CONCLUSIONS

This study around antimicrobials shows the tension and dynamic relationship between regulatory processes and hospital responses, bringing to light the enduring balance of a system that positions itself to meet regulatory requirements and emerging "demands", without necessarily addressing the key underlying concerns. Antimicrobial resistance-related solutions are perceived as likely to require further resourcing and buy-in across multiple levels, engagement across professional streams and require strategies that consider complex systems change in order for regulatory structures to have potency.

Evaluating the costs and consequences of computerized clinical decision support systems in hospitals: a scoping review and recommendations for future practice

OBJECTIVE

Sustainable investment in computerized decision support systems (CDSS) requires robust evaluation of their economic impacts compared with current clinical workflows. We reviewed current approaches used to evaluate the costs and consequences of CDSS in hospital settings and presented recommendations to improve the generalizability of future evaluations.

MATERIALS AND METHODS

A scoping review of peer-reviewed research articles published since 2010. Searches were completed in the PubMed, Ovid Medline, Embase, and Scopus databases (last searched February 14, 2023). All studies reported the costs and consequences of a CDSS-based intervention compared with current hospital workflows. Findings were summarized using narrative synthesis. Individual studies were further appraised against the Consolidated Health Economic Evaluation and Reporting (CHEERS) 2022 checklist.

RESULTS

Twenty-nine studies published since 2010 were included. Studies evaluated CDSS for adverse event surveillance (5 studies), antimicrobial stewardship (4 studies), blood product management (8 studies), laboratory testing (7 studies), and medication safety (5 studies). All studies evaluated costs from a hospital perspective but varied based on the valuation of resources affected by CDSS implementation, and the measurement of consequences. We recommend future studies follow guidance from the CHEERS checklist; use study designs that adjust for confounders; consider both the costs of CDSS implementation and adherence; evaluate consequences that are directly or indirectly affected by CDSS-initiated behavior change; examine the impacts of uncertainty and differences in outcomes across patient subgroups.

DISCUSSION AND CONCLUSION

Improving consistency in the conduct and reporting of evaluations will enable detailed comparisons between promising initiatives, and their subsequent uptake by decision-makers.

An improved method for analysis of interrupted time series (ITS) data: accounting for patient heterogeneity using weighted analysis

Interrupted time series (ITS) design is commonly used to evaluate the impact of interventions in healthcare settings. Segmented regression (SR) is the most commonly used statistical method and has been shown to be useful in practical applications involving ITS designs. Nevertheless, SR is prone to aggregation bias, which leads to imprecision and loss of power to detect clinically meaningful differences. The objective of this article is to present a weighted SR method, where variability across patients within the healthcare facility and across time points is incorporated through weights. We present the methodological framework, provide optimal weights associated with data at each time point and discuss relevant statistical inference. We conduct extensive simulations to evaluate performance of our method and provide comparative analysis with the traditional SR using established performance criteria such as bias, mean square error and statistical power. Illustrations using real data is also provided. In most simulation scenarios considered, the weighted SR method produced estimators that are uniformly more precise and relatively less biased compared to the traditional SR. The weighted approach also associated with higher statistical power in the scenarios considered. The performance difference is much larger for data with high variability across patients within healthcare facilities. The weighted method proposed here allows us to account for the heterogeneity in the patient population, leading to increased accuracy and power across all scenarios. We recommend researchers to carefully design their studies and determine their sample size by incorporating heterogeneity in the patient population.

Towards effective clinical decision support systems: A systematic review

Background

Clinical Decision Support Systems (CDSS) are used to assist the decision-making process in the healthcare field. Developing an effective CDSS is an arduous task that can take advantage from prior assessment of the most promising theories, techniques and methods used at the present time.

Objective

To identify the features of Clinical Decision Support Systems and provide an analysis of their effectiveness. Thus, two research questions were formulated: RQ1—What are the most common trend characteristics in a CDSS? RQ2—What is the maturity level of the CDSS based on the decision-making theory proposed by Simon?

Methods

AIS e-library, Decision Support Systems journal, Nature, PlosOne and PubMed were selected as information sources to conduct this systematic literature review. Studies from 2000 to 2020 were chosen covering search terms in CDSS, selected according to defined eligibility criteria. The data were extracted and managed in a worksheet, based on the defined criteria. PRISMA statements were used to report the systematic review.

Results

The outcomes showed that rule-based module was the most used approach regarding knowledge management and representation. The most common technological feature adopted by the CDSS were the recommendations and suggestions. 19,23% of studies adopt the type of system as a web-based application, and 51,92% are standalone CDSS. Temporal evolution was also possible to visualize. This study contributed to the development of a Maturity Staging Model, where it was possible to verify that most CDSS do not exceed level 2 of maturity.

Conclusion

The trend characteristics addressed in the revised CDSS were identified, compared to the four predefined groups. A maturity stage model was developed based on Simon’s decision-making theory, allowing to assess the level of maturity of the most common features of the CDSS. With the application of the model, it was noticed that the phases of choice and implementation are underrepresented. This constitutes the main gap in the development of an effective CDSS.

Impact of Clinical Decision Support System Implementation at a Community Hospital with an Existing Tele-Antimicrobial Stewardship Program

Background

Lack of on-site antimicrobial stewardship expertise is a barrier to establishing successful programs. Tele-antimicrobial stewardship programs (TASPs) utilizing a clinical decision support system (CDSS) can address these challenges.

Methods

This interrupted time series study reports the impact of CDSS implementation (February 2020) within an existing TASP on antimicrobial usage in a community hospital. Segmented regression analysis was used to assess differences in antimicrobial usage from January 2018 through December 2021. Pre- and post-CDSS frequencies of intravenous vs oral antimicrobials, time to optimal therapy (TTOT), pharmacist efficiency (number of documented interventions per month), and percentage of hospitalized patients receiving antimicrobials were compared with descriptive statistics.

Results

Implementation of a CDSS into an existing TASP was associated with an immediate 11% reduction in antimicrobial usage (level change, P < .0001). Antimicrobial usage was already trending down by 0.25% per month (pre-CDSS slope, P < .0001) and continued to trend down at a similar rate after implementation (post-CDSS slope, P = .0129). Frequency of use of select oral agents increased from 38% to 57%. Median TTOT was 1 day faster (2.9 days pre-CDSS vs 1.9 days post-CDSS). On average, pharmacists documented 2.2-fold more interventions per month (198 vs 90) and patients received 1.03 fewer days of antimicrobials per admission post-CDSS.

Conclusions

Implementation of a CDSS within an established TASP at a community hospital resulted in decreased antimicrobial usage, higher rates of oral usage, faster TTOT, and improved pharmacist efficiency.

Antimicrobial stewardship using electronic prescribing systems in hospital settings: a scoping review of interventions and outcome measures

Objectives

To identify interventions implemented in hospital electronic prescribing systems and the outcome measures used to monitor their impact.

Methods

We systematically searched CINAHL, EMBASE, Google Scholar and Medline using keywords in three strands: (i) population: hospital inpatient or emergency department; (ii) intervention: electronic prescribing functionality; and (iii) outcome: antimicrobial stewardship. The interventions were grouped into six themes: alerts, order sets, restriction of access, mandated documentation, embedded guidelines and automatic prescription stop. The outcome measures were organized into those that measure the quality or quantity of prescribing or clinical decision support (CDS) activity. The impact of each intervention reported was grouped into a positive, negative or no change.

Results

A total of 28 studies were eligible for inclusion. There were 28 different interventions grouped into the six themes. Alerts visible to the practitioner in the electronic health record (EHR) were most frequently implemented (n = 11/28). Twenty different outcome measures were identified, divided into quality (n = 13/20) and quantity outcomes (n = 4/20) and CDS activity (n = 3/20). One-third of outcomes reported across the 28 studies showed positive change (34.4%, n = 42/122) and 61.4% (n = 75/122) showed no change.

Conclusions

The most frequently implemented interventions were alerts, the majority of which were to influence behaviour or decision-making of the practitioner within the EHR. Quality outcomes were most frequently selected by researchers. The review supports previous research that larger well-designed randomized studies are needed to investigate the impact of interventions on AMS and outcome measures to be standardized.

Sustaining Antimicrobial Stewardship in a High-Antibiotic Resistance Setting

IMPORTANCE

There is a lack of studies comparing the intended and unintended consequences of prospective review and feedback (PRF) with computerized decision support systems (CDSS), especially in the longer term in antimicrobial stewardship.

OBJECTIVE

To examine the outcomes associated with the sequential implementation of PRF and CDSS and changes to these interventions with long-term use of antibiotics for and incidence of multidrug resistant organisms (MDROs) and other unintended outcomes.

DESIGN, SETTING, AND PARTICIPANTS

This cohort study used an interrupted time series with segmented regression analysis of data from January 2007 to December 2018. Data were extracted from the electronic medical records of patients admitted at a large university teaching hospital with high rates of antibiotic resistance in Singapore. Data were analyzed from June 2019 to June 2020.

EXPOSURES

PRF of piperacillin-tazobactam and carbapenems (intervention 1, April 2009), with the addition of hospital-wide CDSS (intervention 2, April 2011), and lifting of CDSS for half of the hospital wards for 6 months (intervention 3, March 2017).

MAIN OUTCOMES AND MEASURES

Monthly antimicrobial use was measured in defined daily doses (DDDs) per 1000 patient-days. The monthly incidence of MDROs was calculated as number of clinical isolates detected per 1000 inpatient-days over a 6-month period. Unintended outcomes examined included in-hospital mortality and age-adjusted length of stay (LOS).

RESULTS

The number of inpatients increased from 56 263 in 2007 to 63 572 in 2018. During the same period, the mean monthly patient days increased from 33 929 in 2007 to 45 603 in 2018, and the proportion of patients older than 65 years increased from 45.5% in 2007 to 56.6% in 2018. After intervention 1, there were 0.33 (95% CI, 0.18 to 0.48) more DDDs per 1000 patient-days per month of piperacillin-tazobactam and carbapenems and -11.05 (95% CI, -15.55 to -6.55) fewer DDDs per 1000 patient-days per month for other broad-spectrum antibiotics. After intervention 2, there were -0.22 (95% CI, -0.33 to -0.10) fewer DDDs per 1000 patient-days per month of piperacillin-tazobactam and carbapenems and -2.10 (95% CI, -3.13 to -1.07) fewer DDDs per 1000 patient-days per month for other broad-spectrum antibiotics. After intervention 3, use of piperacillin-tazobactam and carbapenem increased by 0.28 (95% CI, 0.02 to 0.55) DDDs per 1000 patient-days per month. After intervention 2, incidence of Clostridioides difficile decreased (estimate, -0.02 [95% CI, -0.03 to -0.01] cases per 1000 patient-days per month).

CONCLUSIONS AND RELEVANCE

In this cohort study, concurrent PRF and CDSS were associated with limiting the use of piperacillin-tazobactam and carbapenems while reducing use of other antibiotics.

Antimicrobial stewardship in Australia: the role of qualitative research in programme development

Antimicrobial stewardship (AMS) in Australia is supported by a number of factors, including enabling national policies, sectoral clinical governance frameworks and surveillance programmes, clinician-led educational initiatives and health services research. A One Health research programme undertaken by the National Centre for Antimicrobial Stewardship (NCAS) in Australia has combined antimicrobial prescribing surveillance with qualitative research focused on developing antimicrobial use-related situational analyses and scoping AMS implementation options across healthcare settings, including metropolitan hospitals, regional and rural hospitals, aged care homes, general practice clinics and companion animal and agricultural veterinary practices. Qualitative research involving clinicians across these diverse settings in Australia has contributed to improved understanding of contextual factors that influence antimicrobial prescribing, and barriers and facilitators of AMS implementation. This body of research has been underpinned by a commitment to supplementing 'big data' on antimicrobial prescribing practices, where available, with knowledge of the sociocultural, technical, environmental and other factors that shape prescribing behaviours. NCAS provided a unique opportunity for exchange and cross-pollination across the human and animal health programme domains. It has facilitated synergistic approaches to AMS research and education, and implementation of resources and stewardship activities. The NCAS programme aimed to synergistically combine quantitative and qualitative approaches to AMS research. In this article, we describe the qualitative findings of the first 5 years.

Effect of an Intensified Antibiotic Stewardship Program at an Orthopedic Surgery Department

Background: Institutional programs such as antibiotic stewardship (ABS) programs offer possibilities to monitor and modify antibiotic usage with the aim of reducing antibiotic resistance. In orthopedic units that treat peri-prosthetic joint infections (PJIs), ABS programs are still rare, however, there is extensive use of high-risk antibiotic agents and an increased risk for the occurrence of Clostridium difficile infections (CDIs). Patients and Methods: An ABS program was implemented at the Department of Orthopedic Surgery at a university hospital. Quarterly antibiotic consumption was measured in defined daily doses (DDDs) per 100 patient-days (PDs) at 10 quarters before the intervention and seven quarters after the intervention. The effect of the new antibiotic policy on drug use rates was evaluated using an interrupted time-series analysis. Estimated changes over time in the incidence of CDIs (cases per 1,000 PDs) were analyzed. Results: A remarkable percentual reduction in second-generation cephalosporin use of 83% (p < 0.001; pre-intervention level, 81.486 DDDs/100 patient-days; post-intervention level, 13.751 DDDs/100 PDs) and clindamycin administration of 78% (p < 0.001; pre-intervention level, 18.982 DDDs/100 PDs; post-intervention level, 4.216 DDDs/100 PDs) was observed after implementation of ABS interventions. Total antibiotic use declined by 25% (p < 0.001; pre-intervention level, 129.078 DDDs/100 PDs; post-intervention level, 96.826 DDDs/100 PDs). Conclusions: This research assessed the positive impact of an intensified ABS program at an orthopedic department specializing in PJIs. Antibiotic stewardship program interventions encourage the reduction of total antibiotic usage and especially high-risk antibiotic agents, associated with the development of antimicrobial resistance.

Clinical impact of accepting or rejecting a recommendation from a clinical decision support system-assisted antibiotic stewardship program

BACKGROUND

Outcomes associated with physician responses to recommendations from an antimicrobial stewardship program (ASP) at an individual patient level have not yet been assessed. We aimed to compare clinical characteristics and mortality risk among patients for whom recommendations from an ASP were accepted or refused.

METHODS

A prospective cohort study was performed with hospitalized adults who received intravenous or oral antimicrobials at a 677-bed academic centre in Canada in 2014-2017. We included patients with an alert produced by a clinical decision support system (CDSS) for whom a recommendation was made by the pharmacist to the attending physician. The outcome was 90-day in-hospital all-cause mortality.

RESULTS

We identified 3,197 recommendations throughout the study period, of which 2,885 (90.2%) were accepted. The median length of antimicrobial treatment was significantly shorter when a recommendation was accepted (0.26 versus 1.78 d; p < 0.001). Refusal of a recommendation was not associated with mortality (odds ratio 1.32; 95% confidence interval, 0.93 to 1.89; p = 0.12). The independent risk factors associated with in-hospital mortality were age, Charlson Comorbidity Index score, admission to a critical care unit, duration between admission and recommendation, and issuance of a recommendation on a carbapenem.

CONCLUSIONS

The duration of antimicrobial treatment was significantly shorter when a recommendation originating from a CDSS-assisted ASP program was accepted. Future prospective studies including potential residual confounding variables, such as the source of infection or physiological derangement, might help in understanding whether CDSS-assisted ASP will have a direct impact on patient mortality.

Development of an antimicrobial stewardship module in an electronic health record: Options to enhance daily antimicrobial stewardship activities

Disclaimer

In an effort to expedite the publication of articles related to the COVID-19 pandemic, AJHP is posting these manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time.

Purpose

The purpose of this manuscript is to describe our experience developing an antimicrobial stewardship (AS) module as a clinical decision support tool in the Epic electronic health record (EHR).

Summary

Clinical decision support systems within the EHR can be used to decrease use of broad-spectrum antibiotics, improve antibiotic selection and dosing, decrease adverse effects, reduce antibiotic costs, and reduce the development of antibiotic resistance. The Johns Hopkins Hospital constructed an AS module within Epic. Customized stewardship alerts and scoring systems were developed to triage patients requiring stewardship intervention. This required a multidisciplinary approach with a team comprising AS physicians and pharmacists and Epic information technology personnel, with assistance from clinical microbiology and infection control when necessary. In addition, an intervention database was enhanced with stewardship-specific interventions, and workbench reports were developed specific to AS needs. We herein review the process, advantages, and challenges associated with the development of the Epic AS module.

Conclusion

Customizing an AS module in an EHR requires significant time and expertise in antimicrobials; however, AS modules have the potential to improve the efficiency of AS personnel in performing daily stewardship activities and reporting through a single system.

Perceived roles and barriers to nurses' engagement in antimicrobial stewardship: A Thai qualitative case study

BACKGROUND

Antimicrobial stewardship is the practice of ensuring the optimal use of antibiotics to prevent antimicrobial resistance. A multidisciplinary approach is considered best practice; however, little is known about nurses' contribution.

OBJECTIVES

To explore how organisational multidisciplinary leaders and clinical nurses perceive nurses' roles in AMS in a single organisational site case study based in Thailand, within the current governance, educational and practice context, and the barriers to nurses' engagement in AMS.

METHODS

A qualitative descriptive study using thematic analysis approach was conducted in a 1000-bed university hospital in Bangkok, Thailand. The combined number of organisational leaders and nurses was 33 including 15 individual organisational leader interviews and three focus groups involving 18 nurses.

RESULTS

Nurses currently participate in AMS by supporting system processes, monitoring safety and optimal antibiotic use and patient education. A lack of clear articulation of nurses' role and traditional professional hierarchies limits active participation. Inconsistent engagement was perceived as due to a failure to prioritise AMS activities, a lack of formal policies and a need for further education.

CONCLUSION

Nurses do engage in AMS but there are significant governance, hierarchical and educational impediments. These gaps need to be addressed before clearly defined nurse roles in AMS can be developed and embedded into clinical practice.

Sustainability of antimicrobial stewardship programs in Australian rural hospitals: a qualitative study

Objective The aim of this study was to explore the features of sustainable antimicrobial stewardship (AMS) programs in Australian rural hospitals and develop recommendations on incorporating these features into rural hospitals' AMS programs. Methods Lead AMS clinicians with knowledge of at least one AMS program sustained for >2 years in a health service in rural Australia were recruited to the study. A series of interviews was conducted and the transcripts analysed thematically using a framework method. Results Fifteen participants from various professional disciplines were interviewed. Key features that positively affected the sustainability of AMS programs in rural hospitals included a hospital executive who provided strong governance and accountability, dedicated resources, passionate local champions, area-wide arrangements and adaptability to engage in new partnerships. Challenges to building AMS programs with these features were identified, particularly in engaging hospital executive to allocate AMS resources, managing the burn out of passionate champions and formalising network arrangements. Conclusions Strategies to increase the sustainability of AMS programs in rural hospitals include using accreditation as a mechanism to drive direct resource allocation, explicit staffing recommendations for rural hospitals, greater support to develop formal network arrangements and a framework for integrated AMS programs across primary, aged and acute care. What is known about the topic? AMS programs facilitate the responsible use of antimicrobials. Implementation challenges have been identified for rural hospitals, but the sustainability of AMS programs has not been explored. What does this paper add? Factors that positively affected the sustainability of AMS programs in rural hospitals were a hospital executive that provided strong governance and accountability, dedicated resources, network or area-wide arrangements and adaptability. Challenges to building AMS programs with these features were identified. What are the implications for practitioners? Recommended actions to boost the sustainability of AMS programs in rural hospitals are required. These include using accreditation as a mechanism to drive direct resource allocation, explicit staffing recommendations for rural hospitals, greater support to develop network arrangements and support to create integrated AMS programs across acute, aged and primary care.

Mapping hospital antimicrobial stewardship programmes in the Gulf Cooperation Council states against international standards: a systematic review

BACKGROUND

While there is evidence of implementation of antimicrobial stewardship programmes (ASPs) in the Gulf Cooperation Council (GCC) states, there has been limited benchmarking and mapping to international standards and frameworks.

AIM

To critically appraise and synthesize the evidence of ASP implementation in GCC hospitals with reference to the framework of the Centers for Disease Control and Prevention (CDC), identifying key facilitators and barriers.

METHODS

A systematic review protocol was developed based on Preferred Reporting Items for Systematic Reviews and Meta-analyses for Protocols guidelines. Five electronic databases were searched for studies published in English from 2010 onwards. Study selection, quality assessment and data extraction were performed independently by two reviewers. A narrative synthesis was conducted with ASP interventions mapped to CDC core elements.

FINDINGS

Seventeen studies were identified, most of which (N=11) were from Saudi Arabia. Mapping to the CDC framework identified key areas of strengths and weaknesses in reporting implementation. Studies more commonly reported core elements of pharmacy expertise, selected aspects of implementation actions, tracking, antibiotic use and resistance, and education. Little emphasis was placed on the reporting of leadership and accountability. Key implementation facilitators were physician and organization support, information systems and education, and barriers were dedicated staff, workload and funding.

CONCLUSION

There is a need to enhance the reporting of ASP implementation in GCC hospitals. The CDC framework should be used as a guide during the development, implementation and reporting of ASP interventions. Action is required to identify facilitators and overcome barriers, where possible.

Implementation of an antimicrobial stewardship programme and reduction in carbapenemase-producing Enterobacterales in an Australian local health district

Background

Carbapenemase-producing Enterobacterales (CPE) are increasingly seen in Australian hospitals. Antimicrobial stewardship (AMS) interventions have been shown to reduce rates of carbapenem-resistant organisms; data on their effect on CPE rates are limited.

Objectives

To explore the effect of a multi-site computer-supported AMS programme on the rates of CPE in an Australian local health district.

Methods

All laboratory CPE isolates between 2008 and 2018 were identified. Microbiological and demographic data, CPE risk factors and outcomes were collected. Monthly carbapenem use was expressed as DDD per 1000 occupied bed days (OBD). Hand hygiene compliance rates among healthcare workers were analysed. A computer-supported AMS programme was implemented district-wide in 2012. Bivariate relationships were examined using Pearson's r and predictors of CPE isolates using time series linear regression.

Results

We identified 120 isolates from 110 patients. Numbers of CPE isolates and carbapenem use both showed a strong downward trend during the study period; the decreases were strongly correlated (r = 0.80, P = 0.006). The positive relationship between carbapenem use and CPE isolation was maintained while adjusting for time (b = 0.05, P < 0.001). Average yearly consumption of carbapenems fell by 20%, from 18.4 to 14.7 DDD/1000 OBD following implementation of the AMS programme. Hand hygiene compliance rates remained high throughout.

Conclusions

We demonstrated a reduction of CPE isolates in conjunction with reduced carbapenem use, longitudinally consolidated by a formal AMS programme. Prospective studies are needed to validate the effect of AMS on carbapenem resistance, especially in high-prevalence settings.

Automated Referral to Cardiac Rehabilitation After Coronary Artery Bypass Grafting Is Associated With Modest Improvement in Program Completion

BACKGROUND

Cardiac rehabilitation (CR) is a guideline-indicated modality for reducing residual cardiovascular risk among patients undergoing coronary artery bypass grafting (CABG) surgery. However, many referred patients do not initiate or complete a CR program; even more patients are never even referred.

METHODS

All post-CABG patients in Calgary, Alberta, Canada, from January 1, 1996, to March 31, 2016, were included. Data were obtained from the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease and TotalCardiology Rehabilitation databases. Automated referral to CR at discharge after CABG was instituted on July 1, 2007. We used interrupted time series analysis to evaluate the impact of automated referral on CR referral and completion rates and studied the association of these CR process markers with mortality.

RESULTS

A total of 8,118 patients underwent CABG surgery during the study period: 5,103 before automation and 3,015 after automation. Automation increased referral rates from 39.5% to 75.0% (P < 0.001). Automated referral was associated with a 7.2% increase in CR completion in the overall population (33.3% vs 26.1%; P < 0.001). In adjusted models, CR referral alone was not associated with reduced mortality (hazard ratio [HR] 0.84, 95% CI 0.64-1.11), but CR completion was (HR 0.43, 95% CI 0.31-0.61).

CONCLUSION

Automated referral in post-CABG patients resulted in modest improvement in CR program completion. Therefore, even when CR referral is automated to include all eligible patients, additional strategies to support CR program enrollment and completion remain necessary to achieve the desired health benefits.

Clinical Decision Support Systems and Their Role in Antibiotic Stewardship: a Systematic Review

PURPOSE OF REVIEW

The purpose of this article is to perform a systematic review over the past 5 years on the role and effectiveness of clinical decision support systems (CDSSs) on antibiotic stewardship.

RECENT FINDINGS

CDDS interventions found a significant impact on multiple outcomes relevant to antibiotic stewardship. There are various types of CDSS implementations, both active and passive (provider initiated). Passive interventions were associated with more significant outcomes; however, both interventions appeared effective. In the reviewed literature, CDSSs were consistently associated with decreasing antibiotic consumption and narrowing the spectrum of antibiotic usage. Generally, guideline adherence was improved with CDSS, although this was not universal. The effect on other outcomes, such as mortality, Clostridiodes difficile infections, length of stay, and cost, inconsistently showed a significant difference. Overall, CDDS implementation has effectively decreased antibiotic consumption and improved guideline adherence across the various types of CDSS. Other positive outcomes were noted in certain settings, but were not universal. When creating a new intervention, it is important to identify the optimal structure and deployment of a CDSS for a specific setting.

The role of electronic health record and "add-on" clinical decision support systems to enhance antimicrobial stewardship programs

Increasingly, demands are placed on healthcare systems to meet antimicrobial stewardship standards and reporting requirements. This trend, combined with reduced financial and personnel resources, has created a need to adopt information technology (IT) to help ease these burdens and facilitate action. The incorporation of IT into an antimicrobial stewardship program can help improve stewardship intervention efficiencies and facilitate the tracking and reporting of key metrics, including outcomes. This paper provides a review of the stewardship-related functionality within these IT systems, describes how these platforms can be used to improve antimicrobial use, and identifies how they can support current and potential future antimicrobial stewardship regulatory and accreditation standards. Finally, recommendations to help close the gaps in existing systems are provided and suggestions for future areas of development within these programs are delineated.

Impact of clinical decision support on empirical antibiotic prescribing for children with community-acquired pneumonia

AIM

To assess the impact of a computerised clinical decision support system (CDSS) on antibiotic use in hospitalised children with a presumptive diagnosis of uncomplicated community-acquired pneumonia (CAP).

METHODS

Codes associated with lower respiratory tract infection were used to identify cases of presumed uncomplicated CAP requiring admission to a tertiary paediatric hospital. Random sampling of the periods between 1 October 2010 and 30 September 2012 (pre-CDSS) and 1 October 2012 and 30 September 2014 (post-CDSS) determined the sequence of case assessment by two independent investigators. Initial antibiotic therapy, associated CDSS approvals and documented signs of clinical deterioration prior to antibiotic decision-making were recorded.

RESULTS

Statistically significant differences between cases pre- and post-CDSS implementation were minimal. High fever was observed in 57.5% (77/134) cases pre-CDSS and 45.8% (49/107) cases post-CDSS (P = 0.07). Supplemental oxygen was used in 30.6% pre-CDSS and 54.2% post-CDSS cases (P < 0.001). Narrow-spectrum penicillins were prescribed most often, with no statistically significant change post-CDSS implementation (81.3% pre-CDSS, 77.6% post-CDSS, P = 0.47). Macrolides were used consistently throughout the study period (53.7% pre-CDSS, 61.7% post-CDSS; P = 0.21).

CONCLUSION

CDSS implementation did not reduce already low rates of broad-spectrum antibiotic use for uncomplicated CAP.

Barriers to implementing antimicrobial stewardship programmes in three Saudi hospitals: Evidence from a qualitative study

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Adoption of ASPs in Saudi hospitals remains low despite a national implementation strategy.

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Lack of enforcement of policies and guidelines is a main contributor to inappropriate antimicrobial prescribing.

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Barriers to ASP adoption in Saudi hospitals are mainly organisational.

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Physicians’ fears and concerns inhibit their adoption of antimicrobial stewardship practices.

Objectives

This study explored antimicrobial stewardship programme (ASP) team members’ perspectives regarding factors influencing the adoption and implementation of these programmes in Saudi hospitals.

Methods

This was a qualitative study based on face-to-face semistructured interviews with healthcare professionals involved in ASPs and activities across three Ministry of Health (MoH) hospitals in Saudi Arabia (n = 18). Interviews were also conducted with two representatives of a General Directorate of Health Affairs in a Saudi region and two representatives of the Saudi MoH (n = 4) between January–February 2017.

Results

Despite the existence of a national strategy to implement ASPs in Saudi MoH hospitals, their adoption and implementation remains low. Hospitals have their own antimicrobial stewardship policies, but adherence to these is poor. ASP team members highlight that lack of enforcement of policies and guidelines from the MoH and hospital administration is a significant barrier to ASP adoption and implementation. Other barriers include disintegration of teams, poor communication, lack of recruitment/shortage of ASP team members, lack of education and training, and lack of health information technology (IT). Physicians’ fears and concerns in relation to liability are also a barrier to their adoption of ASPs.

Conclusion

This is the first qualitative study exploring barriers to ASP adoption and implementation in Saudi hospitals from the perspective of ASP team members. Formal endorsement of ASPs from the MoH as well as hospital enforcement of policies and provision of human and health IT resources would improve the adoption and implementation of ASPs in Saudi hospitals.

Impact of antimicrobial stewardship interventions on Clostridium difficile infection and clinical outcomes: segmented regression analyses

Background

Antimicrobial exposure is associated with increased risk of Clostridium difficile infection (CDI), but the impact of prescribing interventions on CDI and other outcomes is less clear.

Objectives

To evaluate the effect of an antimicrobial stewardship intervention targeting high-risk antimicrobials (HRA), implemented in October 2008, and to compare the findings with similar studies from a systematic review.

Methods

All patients admitted to Medicine and Surgery in Ninewells Hospital from October 2006 to September 2010 were included. Intervention effects on HRA use (dispensed DDD), CDI cases and mortality rates, per 1000 admissions per month, were analysed separately in Medicine and Surgery using segmented regression of interrupted time series (ITS) data. Data from comparable published studies were reanalysed using the same method.

Results

Six months post-intervention, there were relative reductions in HRA use of 33% (95% CI 11-56) in Medicine and 32% (95% CI 19-46) in Surgery. At 12 months, there was an estimated reduction in CDI of 7.0 cases/1000 admissions [relative change -24% (95% CI - 55 to 6)] in Medicine, but no change in Surgery {estimated 0.1 fewer cases/1000 admissions [-2% (95% CI - 116 to 112)]}. Mortality reduced throughout the study period, unaffected by the intervention. In all six comparable studies, HRA use reduced significantly, but reductions in CDI rates were only statistically significant in two and none measured mortality. Pre-intervention CDI rates and trends influenced the intervention effect.

Conclusions

Despite large reductions in HRA prescribing and reductions in CDI, demonstrating real-world impact of stewardship interventions remains challenging.

Factors associated with adherence to antimicrobial stewardship after-hours

OBJECTIVES

Assess restricted antimicrobials acquired after standard working hours for adherence to antimicrobial stewardship (AMS) and identify factors associated with increased likelihood of adherence at the time of acquisition, and the next standard working day.

METHODS

All documented antimicrobials acquired from a paediatric hospital after-hours drug room from 1 July 2014 to 30 June 2015 were reconciled with records of AMS approval, and documented AMS review in the medical record.

KEY FINDINGS

Of the 758 antimicrobial acquisitions from the after-hours drug room, 62.3% were restricted. Only 29% were AMS adherent at the time of acquisition, 15% took place despite documented request for approval by a pharmacist. Antimicrobials for respiratory patients (OR 3.10, 95% CI 1.68-5.5) and antifungals (2.48, 95% CI 1.43-4.30) were more likely to be AMS adherent. Half of the acquisitions that required review the next standard working day were adherent to AMS (51.8%, 129/249). Weekday acquisitions (2.10, 95% CI 1.20-3.69) and those for patients in paediatric intensive care (2.26, 95% CI 1.07-4.79) were associated with AMS adherence. Interactions with pharmacists prior to acquisition did not change the likelihood of AMS adherence the next standard working day. Access to restricted antimicrobial held as routine ward stock did not change the likelihood of AMS adherence at the time of acquisition, or the next standard working day.

CONCLUSION

Restricted antimicrobials acquired after-hours are not routinely AMS adherent at the time of acquisition or the next standard working day, limiting opportunities for AMS involvement.

A new carbapenem drug dosage metric for carbapenem usage and correlation with carbapenem resistance of Pseudomonas aeruginosa

The emergence and dissemination of antimicrobial resistance is a worldwide problem. Inappropriate antimicrobial use contributes to this resistance, and several metrics of drug usage have been used to monitor their consumption and rational use. We examined several existing drug metrics, and developed a new one, dose/duration-density (D/d²), for a the best correlation between carbapenem usage and carbapenem resistance of Pseudomonas aeruginosa. The annual changes of antimicrobial use density (AUD), days of therapy (DOT), daily dose (DD) and D/d² for meropenem, imipenem and total carbapenems was analyzed for a correlation with carbapenem susceptibility of P. aeruginosa from 2006 through 2015 at a university hospital. The substitution of meropenem for imipenem usage, and an approximate 10% increase in carbapenem susceptibility of P. aeruginosa occurred over the study period. There were significant correlations of the meropenem susceptibility of P. aeruginosa and meropenem usage as measured by the meropenem DD, of imipenem susceptibility and imipenem AUD and DOT, and overall carbapenem susceptibility and imipenem DOT. The D/d² for meropenem, imipenem and total carbapenems had significant correlations with individual and all carbapenem susceptibility of P. aeruginosa. These D/d² is the best single carbapenem use metric for correlating carbapenem usage with P. aeruginosa resistance. Further studies are warranted to consider the value of D/d² for other antimicrobials and bacteria.

Remote Antimicrobial Stewardship: A Solution for Meeting The Joint Commission Stewardship Standard?

Purpose: The purpose of this study was to determine the time required for antimicrobial stewardship (AS) activities at a small community hospital (SCH) as well as barriers to remote AS to satisfy The Joint Commission (TJC)'s AS standard. Methods: This was a prospective chart review and time study conducted in patients identified by a clinical decision support application as potential opportunities for antimicrobial therapy modification at a SCH between December 12, 2016, and March 31, 2017. Potential interventions were communicated electronically to the clinical pharmacy specialist, who would then communicate the recommendations to the patient's provider. The primary endpoint was a time study for stewardship activities. Secondary endpoints included describing barriers encountered to remote AS as well as a cost-benefit analysis of remote AS. Results: The time study revealed an average of 11 alerts per day, 9 chart reviews per day, 8 interventions per day, and 5 minutes per chart. Seven hundred twenty-four alerts were evaluated with the most common alerts constituting opportunities for de-escalation (29%), targeted drugs (22%), positive blood cultures (18%), Intravenous (IV) to oral (PO) (17%), and antimicrobial renal monitoring (8%).Interventions were accepted (11%), accepted modified (6%), rejected (35%), or undetermined (48%). Barriers to implementation included workflow and indirect communication. For patients with accepted interventions, there was an average savings of $279.82 per patient in pharmacy charges. Conclusion: Through remote AS, a SCH can have an antimicrobial stewardship program that is in compliance with the basic elements of the TJC standard MM.09.01.01, performs daily chart review by an infectious diseases trained pharmacist to increase the quality of patient care, and achieves a mean savings of $279.82 in pharmacy charges and $1,126.26 in hospital charges per patient with accepted interventions.

Changes in antimicrobial prescribing behavior after the introduction of the antimicrobial stewardship program: A pre- and post-intervention survey

The introduction of an antimicrobial stewardship (AMS) program is associated with a change in antimicrobial prescribing behavior. A proposed mechanism for this change is by impacting the prescribing etiquette described in qualitative studies. This study sought to detect a change in prescribing attitudes 12 months after the introduction of AMS and gauge utility of various AMS interventions. Surveys were distributed to doctors in two regional Australian hospitals on a convenience basis 6 months before, and 12 months after, the introduction of AMS. Agreement with 20 statements describing attitudes (cultural, behavioral and knowledge) towards antimicrobial prescribing was assessed on a 4-point Likert scale. Mean response scores were compared using the Wilcoxon Rank sum test. 155 responses were collected before the introduction of AMS, and 144 afterwards. After the introduction of AMS, an increase was observed in knowledge about available resources such as electronic decision support systems (EDSS) and therapeutic guidelines, with raised awareness about the support available through AMS rounds and the process to be followed when prescribing restricted antimicrobials. Additionally, doctors were less likely to rely on pharmacy to ascertain when an antimicrobial was restricted, depend on infectious diseases consultant advice and use past experience to guide antimicrobial prescribing. Responses to this survey indicate that positive changes to the antimicrobial prescribing etiquette may be achieved with the introduction of an AMS program. Use of EDSS and other resources such as evidence-based guidelines are perceived to be important to drive rational antimicrobial prescribing within AMS programs.

A Role for Antimicrobial Stewardship in Clinical Sepsis Pathways: a Prospective Interventional Study

OBJECTIVE To evaluate the impact of early infectious diseases (ID) antimicrobial stewardship (AMS) intervention on inpatient sepsis antibiotic management. DESIGN Interventional, nonrandomized, controlled study. SETTING Tertiary-care referral hospital, Sydney, Australia. PATIENTS Consecutive, adult, non-intensive care unit (non-ICU) inpatients triggering an institutional clinical sepsis pathway from May to August 2015. INTERVENTION All patients reviewed by an ID Fellow within 24 hours of sepsis pathway trigger underwent case review and clinic file documentation of recommendations. Those not reviewed by an ID Fellow were considered controls and received standard sepsis pathway care. The primary outcome was antibiotic appropriateness 48 hours after sepsis trigger. RESULTS In total, 164 patients triggered the sepsis pathway: 6 patients were excluded (previous sepsis trigger); 158 patients were eligible; 106 had ID intervention; and 52 were control cases. Of these 158 patients, 91 (58%) had sepsis, and 15 of these 158 (9.5%) had severe sepsis. Initial antibiotic appropriateness, assessable in 152 of 158 patients, was appropriate in 80 (53%) of these 152 patients and inappropriate in 72 (47%) of these patients. In the intervention arm, 93% of ID Fellow recommendations were followed or partially followed, including 53% of cases in which antibiotics were de-escalated. ID Fellow intervention improved antibiotic appropriateness at 48 hours by 24% (adjusted risk ratio, 1.24; 95% confidence interval, 1.04-1.47; P=.035). The appropriateness agreement among 3 blinded ID staff opinions was 95%. Differences in intervention and control group mortality (13% vs 17%) and median length of stay (13 vs 17.5 days) were not statistically significant. CONCLUSION Sepsis overdiagnosis and delayed antibiotic optimization may reduce sepsis pathway effectiveness. Early ID AMS improved antibiotic management of non-ICU inpatients with suspected sepsis, predominantly by de-escalation. Further studies are needed to evaluate clinical outcomes. Infect Control Hosp Epidemiol 2017;38:1032-1038.