Intervention to Reduce Broad-Spectrum Antibiotics and Treatment Durations Prescribed at the Time of Hospital Discharge: A Novel Stewardship Approach

A Novel Risk-Adjusted Metric to Compare Hospitals on Their Antibiotic Prescribing at Hospital Discharge

BACKGROUND

Antibiotic overuse at hospital discharge is common, but there is no metric to evaluate hospital performance at this transition of care. We built a risk-adjusted metric for comparing hospitals on their overall post-discharge antibiotic use.

METHODS

This was a retrospective study across all acute-care admissions within the Veterans Health Administration during 2018-2021. For patients discharged to home, we collected data on antibiotics and relevant covariates. We built a zero-inflated, negative, binomial mixed model with 2 random intercepts for each hospital to predict post-discharge antibiotic exposure and length of therapy (LOT). Data were split into training and testing sets to evaluate model performance using absolute error. Hospital performance was determined by the predicted random intercepts.

RESULTS

1 804 300 patient-admissions across 129 hospitals were included. Antibiotics were prescribed to 41.5% while hospitalized and 19.5% at discharge. Median LOT among those prescribed post-discharge antibiotics was 7 (IQR, 4-10) days. The predictive model detected post-discharge antibiotic use with fidelity, including accurate identification of any exposure (area under the precision-recall curve = 0.97) and reliable prediction of post-discharge LOT (mean absolute error = 1.48). Based on this model, 39 (30.2%) hospitals prescribed antibiotics less often than expected at discharge and used shorter LOT than expected. Twenty-eight (21.7%) hospitals prescribed antibiotics more often at discharge and used longer LOT.

CONCLUSIONS

A model using electronically available data was able to predict antibiotic use prescribed at hospital discharge and showed that some hospitals were more successful in reducing antibiotic overuse at this transition of care. This metric may help hospitals identify opportunities for improved antibiotic stewardship at discharge.

Excellence in Antibiotic Stewardship: A Mixed-Methods Study Comparing High-, Medium-, and Low-Performing Hospitals

BACKGROUND

Despite antibiotic stewardship programs existing in most acute care hospitals, there continues to be variation in appropriate antibiotic use. While existing research examines individual prescriber behavior, contextual reasons for variation are poorly understood.

METHODS

We conducted an explanatory, sequential mixed-methods study of a purposeful sample of 7 hospitals with varying discharge antibiotic overuse. For each hospital, we conducted surveys, document analysis, and semi-structured interviews with antibiotic stewardship and clinical stakeholders. Data were analyzed separately and mixed during the interpretation phase, where each hospital was examined as a case, with findings organized across cases using a strengths, weaknesses, opportunities, and threats framework to identify factors accounting for differences in antibiotic overuse across hospitals.

RESULTS

Surveys included 85 respondents. Interviews included 90 respondents (31 hospitalists, 33 clinical pharmacists, 14 stewardship leaders, 12 hospital leaders). On surveys, clinical pharmacists at hospitals with lower antibiotic overuse were more likely to report feeling: respected by hospitalist colleagues (P = .001), considered valuable team members (P = .001), and comfortable recommending antibiotic changes (P = .02). Based on mixed-methods analysis, hospitals with low antibiotic overuse had 4 distinguishing characteristics: (1) robust knowledge of and access to antibiotic stewardship guidance; (2) high-quality clinical pharmacist-physician relationships; (3) tools and infrastructure to support stewardship; and (4) highly engaged infectious diseases physicians who advocated stewardship principles.

CONCLUSIONS

This mixed-methods study demonstrates the importance of organizational context for high performance in stewardship and suggests that improving antimicrobial stewardship requires attention to knowledge, interactions, and relationships between clinical teams and infrastructure that supports stewardship and team interactions.

Protocol for a parallel cluster randomized trial of a participatory tailored approach to reduce overuse of antibiotics at hospital discharge: the ROAD home trial

BACKGROUND

Antibiotic overuse at hospital discharge is common, costly, and harmful. While discharge-specific antibiotic stewardship interventions are effective, they are resource-intensive and often infeasible for hospitals with resource constraints. This weakness impacts generalizability of stewardship interventions and has health equity implications as not all patients have access to the benefits of stewardship based on where they receive care. There may be different pathways to improve discharge antibiotic prescribing that vary widely in feasibility. Supporting hospitals in selecting interventions tailored to their context may be an effective approach to feasibly reduce antibiotic overuse at discharge across diverse hospitals. The objective of this study is to evaluate the effectiveness of the Reducing Overuse of Antibiotics at Discharge Home multicomponent implementation strategy ("ROAD Home") on antibiotic overuse at discharge for community-acquired pneumonia and urinary tract infection.

METHODS

This 4-year two-arm parallel cluster-randomized trial will include three phases: baseline (23 months), intervention (12 months), and postintervention (12 months). Forty hospitals recruited from the Michigan Hospital Medicine Safety Consortium will undergo covariate-constrained randomization with half randomized to the ROAD Home implementation strategy and half to a "stewardship as usual" control. ROAD Home is informed by the integrated-Promoting Action on Research Implementation in Health Services Framework and includes (1) a baseline needs assessment to create a tailored suite of potential stewardship interventions, (2) supported decision-making in selecting interventions to implement, and (3) external facilitation following an implementation blueprint. The primary outcome is baseline-adjusted days of antibiotic overuse at discharge. Secondary outcomes include 30-day patient outcomes and antibiotic-associated adverse events. A mixed-methods concurrent process evaluation will identify contextual factors influencing the implementation of tailored interventions, and assess implementation outcomes including acceptability, feasibility, fidelity, and sustainment.

DISCUSSION

Reducing antibiotic overuse at discharge across hospitals with varied resources requires tailoring of interventions. This trial will assess whether a multicomponent implementation strategy that supports hospitals in selecting evidence-based stewardship interventions tailored to local context leads to reduced overuse of antibiotics at discharge. Knowledge gained during this study could inform future efforts to implement stewardship in diverse hospitals and promote equity in access to the benefits of quality improvement initiatives.

TRIAL REGISTRATION

Clinicaltrials.gov NCT06106204 on 10/30/23.

Optimizing transitions of care antimicrobial prescribing at a community teaching hospital

Objective

Antibiotic prescribing at hospital discharge is an important focus for antimicrobial stewardship efforts. This study set out to determine the impact of a pharmacist-led intervention at hospital discharge on appropriate antimicrobial prescribing.

Design

This was a pre-/post-study evaluating the impact of a pharmacist-led review on antibiotic prescribing at hospital discharge. Pharmacists evaluated antibiotic prescriptions at discharge for appropriate duration, spectrum of activity, frequency, and strength of dose. Each of these criteria needed to be met for an antibiotic regimen to be considered appropriate.

Setting

Moses Cone Hospital is a 535-bed community teaching hospital in Greensboro, North Carolina.

Patients or Participants

Patients ≥18 years of age discharged from the hospital with an antibiotic prescription were included. Exclusion criteria included patients discharged against medical advice, discharged to a skilled nursing facility, or prescribed indefinite prophylactic antimicrobial therapy.

Interventions

A review of patients discharged with antibiotics in 2020 was performed. Patients discharged with antibiotic prescriptions from January 2021 to April 2022 were evaluated prior to discharge by pharmacists. The pharmacist made recommendations to providers based on their evaluations.

Results

162 retrospective patients were screened, and 136 patients were screened at discharge from the hospital in the prospective cohort. 76/162 (47%) retrospective patients received appropriate antibiotic therapy at discharge, while 92/136 (68%) of prospective patients received appropriate discharge therapy (p = 0.001).

Conclusions

In this study examining the efficacy of stewardship pharmacist intervention at hospital discharge, pharmacist review and recommendations were associated with an increased rate of appropriate antimicrobial prescribing.

Ethics statement

This study was conducted under the approval of the Institutional Review Board of the Moses H. Cone Health System. The approval protocol number was 1483117-1 and took effect on September 2nd, 2019. As the research was either retrospective in nature or part of the standard of care recommendations, the project was granted expedited review.

Antimicrobial Stewardship at Transitions of Care

Antimicrobial stewardship interventions have historically been siloed in different care settings; recently, a need for stewardship interventions at care transitions has arisen as inappropriate prescribing at care transitions may result in patient harm. There are several care areas that should be considered for optimizing antibiotic prescribing. Interventions can be difficult to implement as they often require the efforts of a multidisciplinary team and are resource intensive. Antimicrobial stewardship programs should prioritize interventions at transitions of care to improve prescribing and patient outcomes.

Behavior-change interventions to improve antimicrobial stewardship in human health, animal health, and livestock agriculture: A systematic review

Antimicrobial resistance (AMR) is an economic, food security, and global health threat accelerated by a multitude of factors including the overuse and misuse of antimicrobials in the human health, animal health, and agriculture sectors. Given the rapid emergence and spread of AMR and the relative lack of development of new antimicrobials or alternative therapies, there is a need to develop and implement non-pharmaceutical AMR mitigation policies and interventions that improve antimicrobial stewardship (AMS) practices across all sectors where antimicrobials are used. We conducted a systematic literature review per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines to identify peer-reviewed studies that described behavior-change interventions that aimed to improve AMS and/or reduce inappropriate antimicrobial use (AMU) among human health, animal health, and livestock agriculture stakeholders. We identified 301 total publications- 11 in the animal health sector and 290 in the human health sector-and assessed described interventions using metrics across five thematic areas- (1) AMU, (2) adherence to clinical guidelines, (3) AMS, (4) AMR, and (5) clinical outcomes. The lack of studies describing the animal health sector precluded a meta-analysis. Variation across intervention type, study type, and outcome precluded a meta-analysis for studies describing the human health sector; however, a summary descriptive analysis was conducted. Among studies in the human health sector, 35.7% reported significant (p<0.05) pre- to post-intervention decreases in AMU, 73.7% reported significant improvements in adherence of antimicrobial therapies to clinical guidelines, 45% demonstrated significant improvements in AMS practices, 45.5% reported significant decreases in the proportion of isolates that were resistant to antibiotics or the proportion of patients with drug-resistant infections across 17 antimicrobial-organism combinations. Few studies reported significant changes in clinical outcomes. We did not identify any overarching intervention type nor characteristics associated with successful improvement in AMS, AMR, AMU, adherence, nor clinical outcomes.

Impact of a Medication Reconciliation Pharmacist Program on Appropriateness of Community-Acquired Pneumonia Treatment Durations at Hospital Discharge

Background

Antimicrobial stewardship programs have made large efforts to minimize the inappropriate use of antibiotics. Implementation of these programs can be challenging, since many institutions have limited resources. Utilizing resources that already exist may be beneficial, including medication reconciliation pharmacist (MRP) programs. This study aims to evaluate the impact of a MRP program on appropriateness of community-acquired pneumonia (CAP) treatment durations at hospital discharge.

Methods

This study was a retrospective, observational, single-center study comparing the total days of antibiotic therapy for CAP in the preintervention period (9/2020-11/2020) versus the post-intervention period (9/2021-11/2021). Implementation of a new clinical intervention occurred between the 2 periods and included education to MRPs on appropriate CAP treatment durations and on documentation of recommendations. Data was collected utilizing a chart review of the electronic medical record of patients diagnosed with CAP using ICD-10 codes. The primary objective of this study was to compare the total days of antibiotic therapy in the pre-intervention period versus the postintervention period.

Results

One-hundred fifty-five patients were included in the primary analysis. When observing total days of antibiotic therapy, there was no change from the pre-intervention period at 8 days compared to the postintervention period (P = .109). When analyzing antibiotic days of therapy at discharge, there was a decrease from 4.55 days in the preintervention period compared to 3.8 days in the post-intervention period (P = .109). The incidence of those with appropriate treatment durations, defined as 5 to 7 days of antibiotic therapy, was higher in the post-intervention period (26.5% in the pre-intervention group vs 37.9% in the post-intervention group, P = .460).

Conclusions

There was a non-statistically significant decrease in median days of antimicrobial therapy for CAP at hospital discharge after implementation of a new clinical intervention targeting antibiotic days of therapy. Though median total antibiotic days of therapy were similar between both time periods, patients had an overall increase in incidence of appropriate duration of therapy, defined as 5 to 7 days, after intervention. Further studies are necessary to show how MRPs have a positive impact on improving outpatient antibiotic prescribing at hospital discharge.

Evaluating the Impact of a Pharmacist-Led Antimicrobial Stewardship Intervention at Discharge in a Community, Nonteaching Hospital

INTRODUCTION

Approximately 30% to 50% of hospital discharge antimicrobials are inappropriate. Limited data exist on approaches to improve antimicrobial prescribing practices at the time of discharge from a community hospital. Objective: To assess the impact of a comprehensive pharmacist-led antimicrobial stewardship intervention at discharge.

METHODS

We conducted a quasi-experimental, pre-post study. A biphasic intervention took place on 2 medicine units from November 2019 to May 2020 at a community hospital. Baseline data were collected, followed by prescriber education on antimicrobial stewardship to both units (education phase). Next, a pharmacist-led intervention took place on one unit (intervention phase). The primary outcome was composite appropriateness of an oral antimicrobial prescribed to an adult at the time of discharge, defined by narrow spectrum of activity, dosing, and duration of therapy. The primary outcome was assessed using Fisher exact test.

RESULTS

Baseline composite appropriateness was 30% (n = 12) on the control unit and 30.8% (n = 20) on the intervention unit. From baseline to posteducation, no significant change in composite appropriateness was found on the control (30% to 26.7%, P = 0.256) or intervention (30.8% to 19.4%, P = 0.09) unit. There was no significant difference between the education to intervention phase (26.7% vs 35%, P = 0.254) on the control unit. On the intervention unit, a significant difference in composite appropriateness was found from the education to intervention phase (19.4% vs 47.8%, P = 0.017).

CONCLUSION AND RELEVANCE

A pharmacist-led intervention improved appropriateness of oral antimicrobials prescribed at discharge. One-time education was insufficient for improving antimicrobial stewardship.

A Baker's Dozen of Top Antimicrobial Stewardship Intervention Publications in Non-Hospital Care Settings in 2021

The scope of antimicrobial stewardship programs has expanded beyond the acute hospital setting. The need to optimize antimicrobial use in emergency departments, urgent, primary, and specialty care clinics, nursing homes, and long-term care facilities prompted the development of core elements of stewardship programs in these settings. Identifying the most innovative and well-designed stewardship literature in these novel stewardship areas can be challenging. The Southeastern Research Group Endeavor (SERGE-45) network evaluated antimicrobial stewardship-related, peer-reviewed literature published in 2021 that detailed actionable interventions specific to the nonhospital setting. The top 13 publications were summarized following identification using a modified Delphi technique. This article highlights the selected interventions and may serve as a key resource for expansion of antimicrobial stewardship programs beyond the acute hospital setting.

Antibiotic Stewardship Strategies and Their Association With Antibiotic Overuse After Hospital Discharge: An Analysis of the Reducing Overuse of Antibiotics at Discharge (Road) Home Framework

BACKGROUND

Strategies to optimize antibiotic prescribing at discharge are not well understood.

METHODS

In fall 2019, we surveyed 39 Michigan hospitals on their antibiotic stewardship strategies. The association of reported strategies with discharge antibiotic overuse (unnecessary, excess, suboptimal fluoroquinolones) for community-acquired pneumonia (CAP) and urinary tract infection (UTI) was evaluated in 2 ways: (1) all strategies assumed equal weight and (2) strategies were weighted based on the ROAD (Reducing Overuse of Antibiotics at Discharge) Home Framework (ie, Tier 1-Critical infrastructure, Tier 2-Broad inpatient interventions, Tier 3-Discharge-specific strategies) with Tier 3 strategies receiving the highest weight.

RESULTS

Between 1 July 2017 and 30 July 2019, 39 hospitals with 20 444 patients (56.5% CAP; 43.5% UTI) were included. Survey response was 100%. Hospitals reported a median (interquartile range [IQR]) 12 (9-14) of 34 possible stewardship strategies. On analyses of individual stewardship strategies, the Tier 3 intervention, review of antibiotics prior to discharge, was the only strategy consistently associated with lower antibiotic overuse at discharge (adjusted incident rate ratio [aIRR] 0.543, 95% confidence interval [CI]: .335-.878). On multivariable analysis, weighting by ROAD Home tier predicted antibiotic overuse at discharge for both CAP and UTI. For diseases combined, having more weighted strategies was associated with lower antibiotic overuse at discharge (aIRR 0.957, 95% CI: .927-.987, per weighted intervention); discharge-specific stewardship strategies were associated with a 12.4% relative decrease in antibiotic overuse days at discharge.

CONCLUSIONS

The more stewardship strategies a hospital reported, the lower its antibiotic overuse at discharge. However, Tier 3, or discharge-specific strategies, appeared to have the largest effect on antibiotic prescribing at discharge.

Detecting inappropriate total duration of antimicrobial therapy using semi-automated surveillance

Objectives

Evaluation of the appropriateness of the duration of antimicrobial treatment is a cornerstone of antibiotic stewardship programs, but it is time-consuming. Furthermore, it is often restricted to antibiotics prescribed during hospital admission. This study aimed to determine whether mandatory prescription-indication registration at the moment of prescribing antibiotics enables reliable automated assessment of the duration of antibiotic therapy, including post-discharge duration, limiting the need for manual chart review to data validation.

Methods

Antibiotic prescription and admission data, from 1-6-2020 to 31-12-2021, were electronically extracted from the Electronic Medical Record of two hospitals using mandatory indication registration. All consecutively prescribed antibiotics of adult patients who received empiric therapy in the first 24 h of admission were merged to calculate the total length of therapy (LOT) per patient, broken down per registered indication. Endpoints were the accuracy of the data, evaluated by comparing the extracted LOT and registered indication with the clinical notes in 400 randomly selected records, and guideline adherence of treatment duration. Data were analysed using a reproducible syntax, allowing semi-automated surveillance.

Results

A total of 3,466 antibiotic courses were analysed. LOT was accurately retrieved in 96% of the 400 evaluated antibiotic courses. The registered indication did not match chart review in 17% of antibiotic courses, of which only half affected the assessment of guideline adherence. On average, in 44% of patients treatment was continued post-discharge, accounting for 60% (± 19%) of their total LOT. Guideline adherence ranged from 26 to 75% across indications.

Conclusions

Mandatory prescription-indication registration data can be used to reliably assess total treatment course duration, including post-discharge antibiotic duration, allowing semi-automated surveillance.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13756-022-01147-2.

Antimicrobial Stewardship at Transitions of Care to Outpatient Settings: Synopsis and Strategies

Inappropriate antibiotic use and associated consequences, including pathogen resistance and Clostridioides difficile infection, continue to serve as significant threats in the United States, with increasing incidence in the community setting. While much attention has been granted towards antimicrobial stewardship in acute care settings, the transition to the outpatient setting represents a significant yet overlooked area to target optimized antimicrobial utilization. In this article, we highlight notable areas for improved practices and present an interventional approach to stewardship tactics with a framework of disease, drug, dose, and duration. In doing so, we review current evidence regarding stewardship strategies at transitional settings, including diagnostic guidance, technological clinical support, and behavioral and educational approaches for both providers and patients.

Reducing overuse of antibiotics at discharge home: A single-center mixed methods pilot study

BACKGROUND

Antibiotic overuse at hospital discharge is common and harmful; however, methods to improve prescribing during care transitions have been understudied. We aimed to pilot a pharmacist-facilitated antibiotic timeout prior to discharge.

METHODS

From May 2019 to October 2019, we conducted a single-center, controlled pilot study of a pharmacist-facilitated antibiotic timeout prior to discharge. The timeout addressed key elements of stewardship (eg, duration) and was designed and implemented using iterative cycles with rapid feedback. We evaluated implementation outcomes related to feasibility, including usability, adherence, and acceptability, using mixed methods. Pre versus postintervention antibiotic use at discharge in intervention versus control groups was assessed using logistic regression models controlling for patient characteristics.

RESULTS

Pharmacists conducted 288 antibiotic timeouts. Timeouts were feasible (mean 2.5 minutes per timeout) and acceptable (85% [40/48] of hospitalists believed timeouts improved prescribing). Pharmacists recommended an antibiotic change in 25% (73/288) of timeouts with 70% (51/73) of recommended changes accepted by hospitalists. Barriers to adherence included unanticipated and weekend discharges. Compared to control services, there were no differences in antibiotic use after discharge during the intervention.

CONCLUSIONS

A pharmacist-facilitated antibiotic timeout at discharge was feasible and holds promise as a method to improve antibiotic use at discharge.

Appropriateness of prescribed oral antibiotic duration at the time of hospital discharge

Antibiotic stewardship initiatives usually occur in the inpatient setting and should be optimized during transitions of care. In this study, we assessed the appropriateness of oral antibiotic treatment duration at the time of discharge from our institution based on national guidelines and clinical parameters for common infections.

Pharmacist-Driven Transitions of Care Practice Model for Prescribing Oral Antimicrobials at Hospital Discharge

IMPORTANCE

Although prescribers face numerous patient-centered challenges during transitions of care (TOC) at hospital discharge, prolonged duration of antimicrobial therapy for common infections remains problematic, and resources are needed for antimicrobial stewardship throughout this period.

OBJECTIVE

To evaluate a pharmacist-driven intervention designed to improve selection and duration of oral antimicrobial therapy prescribed at hospital discharge for common infections.

DESIGN, SETTING, AND PARTICIPANTS

This quality improvement study used a nonrandomized stepped-wedge design with 3 study phases from September 1, 2018, to August 31, 2019. Seventeen distinct medicine, surgery, and specialty units from a health system in Southeast Michigan participated, including 1 academic tertiary hospital and 4 community hospitals. Hospitalized adults who had urinary, respiratory, skin and/or soft tissue, and intra-abdominal infections and were prescribed antimicrobials at discharge were included in the analysis. Data were analyzed from February 18, 2020, to February 28, 2022.

INTERVENTIONS

Clinical pharmacists engaged in a new standard of care for antimicrobial stewardship practices during TOC by identifying patients to be discharged with a prescription for oral antimicrobials and collaborating with primary teams to prescribe optimal therapy. Academic and community hospitals used both antimicrobial stewardship and clinical pharmacists in a multidisciplinary rounding model to discuss, document, and facilitate order entry of the antimicrobial prescription at discharge.

MAIN OUTCOMES AND MEASURES

The primary end point was frequency of optimized antimicrobial prescription at discharge. Health system guidelines developed from national guidelines and best practices for short-course therapies were used to evaluate optimal therapy.

RESULTS

A total of 800 patients prescribed oral antimicrobials at hospital discharge were included in the analysis (441 women [55.1%]; mean [SD] age, 66.8 [17.3] years): 400 in the preintervention period and 400 in the postintervention period. The most common diagnoses were pneumonia (264 [33.0%]), upper respiratory tract infection and/or acute exacerbation of chronic obstructive pulmonary disease (214 [26.8%]), and urinary tract infection (203 [25.4%]). Patients in the postintervention group were more likely to have an optimal antimicrobial prescription (time-adjusted generalized estimating equation odds ratio, 5.63 [95% CI, 3.69-8.60]). The absolute increase in optimal prescribing in the postintervention group was consistent in both academic (37.4% [95% CI, 27.5%-46.7%]) and community (43.2% [95% CI, 32.4%-52.8%]) TOC models. There were no differences in clinical resolution or mortality. Fewer severe antimicrobial-related adverse effects (time-adjusted generalized estimating equation odds ratio, 0.40 [95% CI, 0.18-0.88]) were identified in the postintervention (13 [3.2%]) compared with the preintervention (36 [9.0%]) groups.

CONCLUSIONS AND RELEVANCE

The findings of this quality improvement study suggest that targeted antimicrobial stewardship interventions during TOC were associated with increased optimal, guideline-concordant antimicrobial prescriptions at discharge.

Personalized antibiograms for machine learning driven antibiotic selection

Background

The Centers for Disease Control and Prevention identify antibiotic prescribing stewardship as the most important action to combat increasing antibiotic resistance. Clinicians balance broad empiric antibiotic coverage vs. precision coverage targeting only the most likely pathogens. We investigate the utility of machine learning-based clinical decision support for antibiotic prescribing stewardship.

Methods

In this retrospective multi-site study, we developed machine learning models that predict antibiotic susceptibility patterns (personalized antibiograms) using electronic health record data of 8342 infections from Stanford emergency departments and 15,806 uncomplicated urinary tract infections from Massachusetts General Hospital and Brigham & Women’s Hospital in Boston. We assessed the trade-off between broad-spectrum and precise antibiotic prescribing using linear programming.

Results

We find in Stanford data that personalized antibiograms reallocate clinician antibiotic selections with a coverage rate (fraction of infections covered by treatment) of 85.9%; similar to clinician performance (84.3% p = 0.11). In the Boston dataset, the personalized antibiograms coverage rate is 90.4%; a significant improvement over clinicians (88.1% p < 0.0001). Personalized antibiograms achieve similar coverage to the clinician benchmark with narrower antibiotics. With Stanford data, personalized antibiograms maintain clinician coverage rates while narrowing 69% of empiric vancomycin+piperacillin/tazobactam prescriptions to piperacillin/tazobactam. In the Boston dataset, personalized antibiograms maintain clinician coverage rates while narrowing 48% of ciprofloxacin to trimethoprim/sulfamethoxazole.

Conclusions

Precision empiric antibiotic prescribing with personalized antibiograms could improve patient safety and antibiotic stewardship by reducing unnecessary use of broad-spectrum antibiotics that breed a growing tide of resistant organisms.

Role of the hospital pharmacist in an Italian antimicrobial stewardship programme

The inappropriate use of antimicrobial agents is contributing to an increasing phenomenon of bacterial resistance. For this reason, there is a growing interest in 'antimicrobial stewardship', a series of coordinated and multidisciplinary interventions aimed to promote the safe and appropriate use of antimicrobials in which the pharmacist's contribution is necessary for the optimal choice of drug, dose, duration of therapy and the implementation of cost containment strategies.

AIM OF THE STUDY

We wanted to create a reference model and a specific training manual on antibiotic stewardship to introduce the role of the department pharmacist with specific infection disease skills in the Italian health system hospitals.

METHODS

This study was conducted in six Italian hospitals for 24 months. It was divided into three phases: definition of indicators (as defined daily doses/100 days of hospitalisation, switches from intravenous (IV) to oral and from empirical to targeted therapies, etc) elaboration of research protocol; sharing, application and detection of the indicators and selection of centres involved; analysis and sharing of results and subsequent drafting and distribution of the training manual.Statistical analysis focused on possible differences between the frequencies of the aforementioned switches. Differences were analysed comparing the values recorded in the first quarter with those of the third quarter trough a χ² test. Statistical significance was set at p<0.05.

RESULTS

The pharmacist's work showed a statistically significant increase in the conversion from IV to oral antibiotic therapy (χ² (1.496)=9112 ; p=0.0025; df=1). It was also detected a 5% improvement in appropriate dosing, 34% reduction in drug stocks, 4% increase in allergy reports and 275% increase in the number of adverse drug reactions reported.

CONCLUSIONS

In this study, the interventions of the antibiotic stewardship pharmacist led to an improvement in quality of care, resource efficiency and healthcare professional awareness.

Impact of a pharmacy department–wide transitions-of-care program on inappropriate oral antibiotic prescribing at hospital discharge

Objective:

To evaluate oral antibiotic prescribing for common infections at hospital discharge before and after implementation of a pharmacist-driven transitions-of-care (TOC) program.

Design:

Single-center before-and-after study.

Setting:

Acute-care, academic, community hospital in Santa Barbara, California.

Patients:

Eligible adult patients prescribed oral antibiotics at hospital discharge for community-acquired pneumonia, skin and soft-tissue infections, and urinary tract infections between September 2019 and December 2019 (preimplementation period) and between March 2021 and May 2021 (postimplementation period).

Intervention:

Antimicrobial stewardship–initiated, department-wide, TOC program requiring all clinical pharmacists to review discharge antibiotic prescriptions in real time.

Results:

In total, 260 antibiotic prescriptions were assessed for appropriateness: 140 before implementation and 120 after implementation. After implementation, the number of prescriptions considered inappropriate significantly decreased by 18% (52% vs 34%; P = .005). Inappropriate rates decreased in all assessment categories: dosing (15% vs 2%; P < .001), treatment duration (42% vs 31%; P = .08), antibiotic selection based on infection type or microbiology (8% vs 4%; P = .33), and antibiotics not indicated (16% vs 10%; P = .18). Median total antibiotic days decreased by 1 day after implementation (10 days vs 9 days; P = .67), and 30-day readmission rates were similar between both phases.

Conclusions:

A real-time, pharmacist-driven, TOC program for oral antibiotic prescriptions had a significant impact in reducing inappropriate prescribing of antibiotics at hospital discharge for common infections. Incorporating discharge antibiotic prescription review into pharmacist daily workflow may be a sustainable approach to outpatient antimicrobial stewardship in a setting with limited resources.

A Statewide Collaborative Quality Initiative To Improve Antibiotic Duration And Outcomes Of Patients Hospitalized With Uncomplicated Community-Acquired Pneumonia

Background

Community-acquired pneumonia (CAP) is a common cause for hospitalization and antibiotic overuse. We aimed to improve antibiotic duration for CAP across 41 hospitals participating in the Michigan Hospital Medicine Safety Consortium (HMS).

Methods

This prospective collaborative quality initiative included patients hospitalized with uncomplicated CAP who qualified for a 5-day antibiotic duration. Between 23 February 2017 and 5 February 2020, HMS targeted appropriate 5-day antibiotic treatment through benchmarking, sharing best practices, and pay-for-performance incentives. Changes in outcomes, including appropriate receipt of 5 ± 1–day antibiotic treatment and 30-day postdischarge composite adverse events (ie, deaths, readmissions, urgent visits, and antibiotic-associated adverse events), were assessed over time (per 3-month quarter), using logistic regression and controlling for hospital clustering.

Results

A total of 41 hospitals and 6553 patients were included. The percentage of patients treated with an appropriate 5 ± 1–day duration increased from 22.1% (predicted probability, 20.9% [95% confidence interval: 17.2%–25.0%]) to 45.9% (predicted probability, 43.9% [36.8%–51.2%]; adjusted odds ratio [aOR] per quarter, 1.10 [1.07–1.14]). Thirty-day composite adverse events occurred in 18.5% of patients (1166 of 6319) and decreased over time (aOR per quarter, 0.98 [95% confidence interval: .96–.99]) owing to a decrease in antibiotic-associated adverse events (aOR per quarter, 0.91 [.87–.95]).

Conclusions

Across diverse hospitals, HMS participation was associated with more appropriate use of short-course therapy and fewer adverse events in hospitalized patients with uncomplicated CAP. Establishment of national or regional collaborative quality initiatives with data collection and benchmarking, sharing of best practices, and pay-for-performance incentives may improve antibiotic use and outcomes for patients hospitalized with uncomplicated CAP.

Hospital Discharge: An Opportune Time for Antimicrobial Stewardship

BACKGROUND

Approximately 30% of antimicrobials prescribed in the outpatient setting are unnecessary and up to 50% are inappropriate. Despite this, antimicrobial stewardship (AS) efforts mostly focus on the inpatient setting, and limited data describe AS interventions at hospital discharge. Acknowledging the potential value of discharge AS, we used our existing resources to review discharge oral antimicrobial prescriptions.

OBJECTIVE

The primary objective of this retrospective, single-center study was to evaluate the impact of an AS program on discharge oral antimicrobial prescriptions.

METHODS

Discharge oral antimicrobial prescriptions sent to our hospital-operated outpatient pharmacy, reviewed by an infectious diseases (ID) pharmacist, and recorded into our data collection tool from September 1, 2020, to February 28, 2021, were evaluated retrospectively. The primary outcome was to identify the frequency a drug-related problem (DRP) was identified by an ID pharmacist. Secondary outcomes included DRP characterization, percentage of prescriptions with interventions, intervention acceptance rate, and reduction in antimicrobial days dispensed at discharge when interventions to limit treatment duration were accepted.

RESULTS

Of the 803 discharge oral antimicrobial prescriptions reviewed, at least 1 DRP was identified in 43.1% (346/803). The most frequently identified DRPs pertained to treatment duration, drug selection, and dose selection. At least 1 intervention was recommended in 42.8% (344/803) of prescriptions. In total, 438 interventions were made and the acceptance rate was 75.6% (331/438). The most common types of interventions included recommendations for a different duration, a different dose or frequency, and antimicrobial discontinuation. When interventions to reduce treatment duration were accepted, the median (interquartile range) number of antimicrobial days decreased from 8 (5-10) days to 4 (0-5.5) days (P < 0.001).

CONCLUSION AND RELEVANCE

An ID pharmacist's review of discharge oral antimicrobial prescriptions sent to our hospital-operated outpatient pharmacy resulted in identification of DRPs and subsequent interventions in a substantial number of prescriptions.

Antibiotic Overuse and Stewardship at Hospital Discharge: The Reducing Overuse of Antibiotics at Discharge (ROAD) Home Framework

Though opportunities exist to improve antibiotic prescribing across the care spectrum, discharge from acute hospitalization is an increasingly recognized source of antibiotic overuse. Antimicrobials are prescribed to more than 1 in 8 patients at hospital discharge; approximately half of which could be improved. Key targets for antibiotic stewardship at discharge include unnecessary antibiotics, excess duration, avoidable fluoroquinolones, and improving (or avoiding) intravenous antibiotic therapy. Barriers to discharge antibiotic stewardship include the perceived “high stakes” of care transitions during which patients move from intense to infrequent observation, difficulties in antibiotic measurement to guide improvement at discharge, and poor communication across silos, particularly with skilled nursing facilities. In this review, we discuss what is currently known about antibiotic overuse at hospital discharge, key barriers, and targets for improving antibiotic prescribing at discharge and we introduce an evidence-based framework, the Reducing Overuse of Antibiotics at Discharge Home Framework, for conducting discharge antibiotic stewardship.

Pediatric antimicrobial stewardship practices at discharge: A national survey

We surveyed pediatric antimicrobial stewardship program (ASP) site leaders within the Sharing Antimicrobial Reports for Pediatric Stewardship collaborative regarding discharge stewardship practices. Among 67 sites, 13 (19%) reported ASP review of discharge antimicrobial prescriptions. These findings highlight discharge stewardship as a potential opportunity for improvement during the hospital-to-home transition.

Pediatricians' Compliance to the Clinical Management Guidelines for Community-Acquired Pneumonia in Infants and Young Children in Pakistan

Community-acquired pneumonia (CAP) is among the most commonly prevailing acute infections in children that may require hospitalization. Inconsistencies among suggested care and actual management practices are usually observed, which raises the need to assess local clinical practices. The current study was conducted to evaluate pediatricians’ compliance with the standard clinical practice guidelines and their antibiotic-prescribing behavior for the management of CAP in children. Methods: A descriptive cross-sectional study was conducted using a self-administered questionnaire; which was provided to pediatricians by the researchers. Statistical analysis was performed with SPSS 25 Statistics; χ² tests (or Fisher-exact tests) with the p-value set at < 0.05 as the threshold for statistical significance. Results: The overall response rate was 59.2%. Male respondents were (n = 101; 42.6%), and the respondents (n = 163; 68.7%) were under 30 years of age. Amoxicillin (n = 122; 51.5%) was considered as the most commonly used first-line treatment for non-severe pneumonia, whereas a smaller proportion (n = 81; 34.2%) of respondents selected amoxicillin–clavulanate. Likewise, amoxicillin (n = 100; 42.2%) was the most popular choice for non-severe pneumonia in hospitalized children; however, if children had used antibiotics earlier to admission, respondents showed an inclination to prescribe a macrolide (n = 95; 40.0%) or second-generation cephalosporin (n = 90; 37.9%). More than 90% responded that children <6 months old with suspected bacterial CAP will probably receive better therapeutic care by hospitalization. Restricting exposure to the antibiotic as much as possible (n = 71; 29.9%), improving antibiotic prescribing (n = 59; 24.8%), and using the appropriate dose of antimicrobials (n = 29; 12.2%) were considered the major factors by the respondents to reduce antimicrobials resistance. Conclusions: The selection of antibiotics and diagnostic approach was as per the recommendations, but indication, duration of treatment, and hospitalization still can be further improved.

Inpatient Fluoroquinolone Stewardship Improves the Quantity and Quality of Fluoroquinolone Prescribing at Hospital Discharge: A Retrospective Analysis Among 122 Veterans Health Administration Hospitals

BACKGROUND

Despite increasing awareness of harms, fluoroquinolones are still frequently prescribed to inpatients and at hospital discharge. Our goal was to describe fluoroquinolone prescribing at hospital discharge across the Veterans Health Administration (VHA) and to contrast the volume and appropriateness of fluoroquinolone prescribing across 3 antimicrobial stewardship strategy types.

METHODS

We analyzed a retrospective cohort of patients hospitalized at 122 VHA acute-care hospitals during 2014-2016. Data from a mandatory VHA survey were used to identify 9 hospitals that self-reported 1 of 3 strategies for optimizing fluoroquinolone prescribing: prospective audit and feedback (PAF), restrictive policies (RP), and no strategy. Manual chart reviews to assess fluoroquinolone appropriateness at hospital discharge (ie, postdischarge) were performed across the 9 hospitals (3 hospitals and 125 cases per strategy type).

RESULTS

There were 1.7 million patient admissions. Overall, there were 1 727 478 fluoroquinolone days of therapy (DOTs), with 674 918 (39.1%) DOTs prescribed for inpatients and 1 052 560 (60.9%) DOTs prescribed postdischarge. Among the 9 reviewed hospitals, postdischarge fluoroquinolone exposure was lower at hospitals using RP, compared to no strategy (3.8% vs 9.3%, respectively; P = .012). Postdischarge fluoroquinolones were deemed inappropriate in 154 of 375 (41.1%) patients. Fluoroquinolones were more likely to be inappropriate at hospitals without a strategy (52.8%) versus those using either RP or PAF (35.2%; P = .001).

CONCLUSIONS

In this retrospective cohort, the majority of fluoroquinolone DOTs occurred after hospital discharge. A large proportion of postdischarge fluoroquinolone prescriptions were inappropriate, especially in hospitals without a strategy to manage fluoroquinolone prescribing. Our findings suggest that stewardship efforts to minimize and improve fluoroquinolone prescribing should also focus on antimicrobial prescribing at hospital discharge.

A healthcare worker and patient-informed approach to oral antibiotic decision making during the hospital-to-home transition

In a qualitative study of healthcare workers and patients discharged on oral antibiotics, we identified 5 barriers to antibiotic decision making at hospital discharge: clinician perceptions of patient expectations, diagnostic uncertainty, attending physician-led versus multidisciplinary team culture, not accounting for total antibiotic duration, and need for discharge prior to complete data.

Antibiotic assessment at hospital discharge-Room for stewardship intervention

Our stewardship team evaluated 19 months of discharge antibiotic prescriptions to determine prescribing appropriateness and to characterize the interventions made. Intervention occurred in 9.7% of patients, with a 58% acceptance rate. Most interventions were educational (antibiotic course was complete at time of intervention). Discharge antibiotic review is a potential stewardship tool.

Impact of a Systematic Pharmacist-Initiated Antibiotic Time-Out Intervention for Hospitalized Adults

INTRODUCTION

Antibiotic time-outs (ATO) are a recommended antimicrobial stewardship action, but data assessing their impact are lacking. This study investigated the impact of a systematic, pharmacist initiated ATO intervention.

METHODS

This pre-post study included inpatients on hospitalist and intensivist services receiving empiric antibiotics for ≥48 hours. The ATO was initiated by pharmacists after 48 hours of empiric therapy and the outcome was documented including antibiotic indication, plan, and duration. An electronic medical record (EMR) alert facilitated ATO completion and pharmacists and prescribers received education prior to implementation. The primary outcome was EMR documentation of an antibiotic plan by 72 hours. Secondary outcomes included antibiotic utilization and antibiotic therapy modifications by 2 hours.

RESULTS

399 patients were included, 199 pre- and 200 post-intervention. The most common indications were pneumonia (32%), intra-abdominal infection (20%) and urinary tract infection (19%), with no between-group differences. EMR documentation of an antibiotic plan significantly improved in the post-intervention group (19% vs. 79%, p<0.0001) as did modifications to antibiotic therapy. The median duration of in-hospital antibiotic therapy was similar between groups (4.0 vs. 4.0 days, p = 0.2499). Approximately 45% of patients in each group received discharge antibiotics and median duration of discharge antibiotic therapy prescribed was reduced (7 vs. 5 days in the pre- and post-intervention groups, respectively; p = 0.0140).

DISCUSSION

Implementation of pharmacist initiated ATO was associated with improvements in supporting EMR documentation and antibiotic therapy modifications. These findings highlight an important role in which pharmacists can serve as part of a collaborative antibiotic stewardship team.

The Association of Antibiotic Stewardship With Fluoroquinolone Prescribing in Michigan Hospitals: A Multi-hospital Cohort Study

BACKGROUND

Fluoroquinolones increase the risk of Clostridioides difficile infection and antibiotic resistance. Hospitals often use pre-prescription approval or prospective audit and feedback to target fluoroquinolone prescribing. Whether these strategies impact aggregate fluoroquinolone use is unknown.

METHODS

This study is a 48-hospital, retrospective cohort of general-care, medical patients hospitalized with pneumonia or positive urine culture between December 2015-September 2017. Hospitals were surveyed on their use of pre-prescription approval and/or prospective audit and feedback to target fluoroquinolone prescribing during hospitalization (fluoroquinolone stewardship). After controlling for hospital clustering and patient factors, aggregate (inpatient and post-discharge) fluoroquinolone (ciprofloxacin, levofloxacin, moxifloxacin) exposure was compared between hospitals with and without fluoroquinolone stewardship.

RESULTS

There were 11 748 patients (6820 pneumonia; 4928 positive urine culture) included at 48 hospitals. All hospitals responded to the survey: 29.2% (14/48) reported using pre-prescription approval and/or prospective audit and feedback to target fluoroquinolone prescribing. After adjustment, fluoroquinolone stewardship was associated with fewer patients receiving a fluoroquinolone (37.1% vs 48.2%; P = .01) and fewer fluoroquinolone treatment days per 1000 patients (2282 vs 3096 days/1000 patients; P = .01), driven by lower inpatient prescribing. However, most (66.6%) fluoroquinolone treatment days occurred after discharge, and hospitals with fluoroquinolone stewardship had twice as many new fluoroquinolone starts after discharge as hospitals without (15.6% vs 8.4%; P = .003).

CONCLUSIONS

Hospital-based stewardship interventions targeting fluoroquinolone prescribing were associated with less fluoroquinolone prescribing during hospitalization, but not at discharge. To limit aggregate fluoroquinolone exposure, stewardship programs should target both inpatient and discharge prescribing.

Antibiotic Overuse after Hospital Discharge: A Multi-Hospital Cohort Study

Background

Antibiotics are commonly prescribed to patients as they leave the hospital. We aimed to create a comprehensive metric to characterize antibiotic overuse after discharge among hospitalized patients treated for pneumonia or urinary tract infection (UTI), and to determine whether overuse varied across hospitals and conditions.

Methods

In a retrospective cohort study of hospitalized patients treated for pneumonia or UTI in 46 hospitals between 1 July 2017–30 July 2019, we quantified the proportion of patients discharged with antibiotic overuse, defined as unnecessary antibiotic use, excess antibiotic duration, or suboptimal fluoroquinolone use. Using linear regression, we assessed hospital-level associations between antibiotic overuse after discharge in patients treated for pneumonia versus a UTI.

Results

Of 21 825 patients treated for infection (12 445 with pneumonia; 9380 with a UTI), nearly half (49.1%) had antibiotic overuse after discharge (56.9% with pneumonia; 38.7% with a UTI). For pneumonia, 63.1% of overuse days after discharge were due to excess duration; for UTIs, 43.9% were due to treatment of asymptomatic bacteriuria. The percentage of patients discharged with antibiotic overuse varied 5-fold among hospitals (from 15.9% [95% confidence interval, 8.7%–24.6%] to 80.6% [95% confidence interval, 69.4%–88.1%]) and was strongly correlated between conditions (regression coefficient = 0.85; P < .001).

Conclusions

Antibiotic overuse after discharge was common and varied widely between hospitals. Antibiotic overuse after discharge was associated between conditions, suggesting that the prescribing culture, physician behavior, or organizational processes contribute to overprescribing at discharge. Multifaceted efforts focusing on all 3 types of overuse and multiple conditions should be considered to improve antibiotic prescribing at discharge.

Interventions to improve antibiotic prescribing at hospital discharge: A systematic review

A large proportion of antibiotic use associated with hospitalization occurs immediately after discharge, representing an important focus for antimicrobial stewardship programs. This review identified few studies evaluating the effect of interventions aimed at improving discharge antibiotic prescribing. Antimicrobial stewardship to improve postdischarge antibiotic prescribing is an unmet need warranting further study.

Inpatient and Discharge Fluoroquinolone Prescribing in Veterans Affairs Hospitals Between 2014 and 2017

Background

Between 2007 and 2015, inpatient fluoroquinolone use declined in US Veterans Affairs (VA) hospitals. Whether fluoroquinolone use at discharge also declined, in particular since antibiotic stewardship programs became mandated at VA hospitals in 2014, is unknown.

Methods

In this retrospective cohort study of hospitalizations with infection between January 1, 2014, and December 31, 2017, at 125 VA hospitals, we assessed inpatient and discharge fluoroquinolone (ciprofloxacin, levofloxacin, moxifloxacin) use as (a) proportion of hospitalizations with a fluoroquinolone prescribed and (b) fluoroquinolone-days per 1000 hospitalizations. After adjusting for illness severity, comorbidities, and age, we used multilevel logit and negative binomial models to assess for hospital-level variation and longitudinal prescribing trends.

Results

Of 560219 hospitalizations meeting inclusion criteria as hospitalizations with infection, 37.4% (209602/560219) had a fluoroquinolone prescribed either during hospitalization (32.5%, 182337/560219) or at discharge (19.6%, 110003/560219). Hospitals varied appreciably in inpatient, discharge, and total fluoroquinolone use, with 71% of hospitals in the highest prescribing quartile located in the Southern United States. Nearly all measures of fluoroquinolone use decreased between 2014 and 2017, with the largest decreases found in inpatient fluoroquinolone and ciprofloxacin use. In contrast, there was minimal decline in fluoroquinolone use at discharge, which accounted for a growing percentage of hospitalization-related fluoroquinolone-days (52.0% in 2014; 61.3% by 2017).

Conclusions

Between 2014 and 2017, fluoroquinolone use decreased in VA hospitals, largely driven by decreased inpatient fluoroquinolone (especially ciprofloxacin) use. Fluoroquinolone prescribing at discharge, as well as levofloxacin prescribing overall, is a growing target for stewardship.

Stewardship-Hospitalist Collaboration

Hospitalists represent a rapidly emerging specialty group that treats a large proportion of hospitalized patients with infections. Antimicrobial stewardship programs and hospitalist groups that focus on building a collaborative approach have been extremely successful in optimizing antimicrobial prescribing and improving patient outcomes. We discuss the tools needed to build collaborative relationships, summarize published examples of successful stewardship-hospitalist collaboration, and provide guidance on developing collaborative interventions.

Antimicrobial stewardship programs; a two-part narrative review of step-wise design and issues of controversy Part I: step-wise design of an antimicrobial stewardship program

Regardless of one's opinion of antimicrobial stewardship programs (ASPs), it is hardly possible to work in hospital care and not be exposed to the term or its practical effects. Despite the term being relatively new, the number of publications in the field is vast, including several excellent reviews of general and specific aspects. Work in antimicrobial stewardship is complex, and includes not only aspects of infectious disease and microbiology, but also of epidemiology, genetics, behavioural psychology, systems science, economics and ethics, to name a few. This review aims to take several of these aspects and the scientific evidence of antimicrobial stewardship studies and merge them into two questions: How should we design ASPs based on what we know today? And which are the most essential unanswered questions regarding antimicrobial stewardship on a broader scale? This narrative review is written in two separate parts aiming to provide answers to the two questions. This first part is written as a step-wise approach to designing a stewardship intervention based on the pillars of unmet need, feasibility, scientific evidence and necessary core elements. It is written mainly as a guide to someone new to the field. It is sorted into five distinct steps: (a) focusing on designing aims; (b) assessing performance and local barriers to rational antimicrobial use; (c) deciding on intervention technique; (d) practical, tailored design including core element inclusion; and (e) evaluation and sustainability. The second part, published separately, formulates ten critical questions on controversies in the field of antimicrobial stewardship. It is aimed at clinicians and researchers with stewardship experience and strives to promote discussion, not to provide answers.

Evaluation of Discharge Antibiotic Prescribing at a Freestanding Children's Hospital: Opportunities for Stewardship

We conducted a retrospective study to evaluate suboptimal discharge antibiotic prescribing at a children's hospital and found that 27% of the prescriptions were suboptimal. Thirty-three percent of the patients who might have qualified for solid dosage forms received liquid dosages instead. Our findings suggest that opportunities exist for discharge antibiotic-stewardship and pill-swallowing programs.

Post-discharge oral antimicrobial use among hospitalized patients across an integrated national healthcare network

OBJECTIVES

Antimicrobial stewardship programmes have focused on reducing inappropriate inpatient antimicrobial prescribing, but several small studies have found a large portion of antimicrobial exposure occurs immediately after hospital discharge. In this study, we describe the prescribing of oral antimicrobials at hospital discharge across an integrated national healthcare system. At the hospital level, we also compare total inpatient antimicrobial use and post-discharge oral antimicrobial use.

METHODS

This retrospective cross-sectional study used national administrative data to identify all acute-care admissions during 2014-2016 within the Veterans Health Administration (VHA). We evaluated inpatient days of therapy (DOT) and post-discharge DOT, defined as oral outpatient antimicrobials dispensed at the time of hospital discharge. At the hospital level, inpatient DOT/100 admissions were compared with post-discharge DOT/100 admissions using Spearman's rank-order correlation.

RESULTS

There were 1 681 701 acute-care admissions across 122 hospitals, and 335 369 (19.9%) were prescribed an oral antimicrobial at discharge. Fluoroquinolones (38.3%) were the most common post-discharge antimicrobial. At the hospital level, median inpatient antimicrobial use was 331.3 (interquartile range (IQR) 284.9-367.9) DOT/100 admissions and median post-discharge use was 209.5 (IQR 181.5-239.6) DOT/100 admissions. Thirty-nine per cent of the total duration of antimicrobial exposure occurred after discharge. At the hospital-level, the metrics of inpatient DOT/100 admissions and post-discharge DOT/100 admissions were weakly positively correlated with rho=0.44 (p < 0.001).

CONCLUSIONS

A large proportion of antimicrobial exposure among hospitalized patients occurred immediately following discharge. Antimicrobial-prescribing at hospital discharge provides an opportunity for antimicrobial stewardship. Hospital-level stewardship metrics need to include both inpatient and post-discharge antimicrobial-prescribing to provide a comprehensive assessment of hospital-associated antimicrobial use.

Evaluation of a multifaceted approach to antimicrobial stewardship education methods for medical residents

OBJECTIVE

Medical residents are an important group for antimicrobial stewardship programs (ASPs) to target with interventions aimed at improving antibiotic prescribing. In this study, we compared antimicrobial prescribing practices of 2 academic medical teams receiving different ASP training approaches along with a hospitalist control group.

DESIGN

Retrospective cohort study comparing guideline-concordant antibiotic prescribing for 3 common infections among a family medicine (FM) resident service, an internal medicine (IM) resident service, and hospitalists.

SETTING

Community teaching hospital.

PARTICIPANTS

Adult patients admitted between July 1, 2016, and June 30, 2017, with a discharge diagnosis of pneumonia, cellulitis, and urinary tract infections were reviewed.

METHODS

All 3 medical teams received identical baseline ASP education and daily antibiotic prescribing audit with feedback via clinical pharmacists. The FM resident service received an additional layer of targeted ASP intervention that included biweekly stewardship-focused rounds with an ASP physician and clinical pharmacist leadership. Guideline-concordant prescribing was assessed based on the institution's ASP guidelines.

RESULTS

Of 1,572 patients, 295 (18.8%) were eligible for inclusion (FM, 96; IM, 69; hospitalist, 130). The percentage of patients receiving guideline-concordant antibiotic selection empirically was similar between groups for all diagnoses (FM, 87.5%; IM, 87%; hospitalist, 83.8%; P = .702). No differences were observed in appropriate definitive antibiotic selection among groups (FM, 92.4%; IM, 89.1%; hospitalist, 89.9%; P = .746). The FM resident service was more likely to prescribe a guideline-concordant duration of therapy across all diagnoses (FM, 74%; IM, 56.5%; hospitalist, 44.6%; P < .001).

CONCLUSIONS

Adding dedicated stewardship-focused rounds into the graduate medical curriculum demonstrated increased guideline adherence specifically to duration of therapy recommendations.

A Baker's Dozen of Top Antimicrobial Stewardship Intervention Publications in 2017

With an increasing number of antimicrobial stewardship-related articles published each year, attempting to stay current is challenging. The Southeastern Research Group Endeavor (SERGE-45) identified antimicrobial stewardship-related peer-reviewed literature that detailed an "actionable" intervention for 2017. The top 13 publications were selected using a modified Delphi technique. These manuscripts were reviewed to highlight the "actionable" intervention used by antimicrobial stewardship programs to provide key stewardship literature for training and teaching and identify potential intervention opportunities within their institutions.

Role of the Pharmacist in Antimicrobial Stewardship

The goals of antimicrobial stewardship are to optimize antimicrobial use to improve patient outcomes and minimize adverse consequences. A successful antimicrobial stewardship program is one that is multidisciplinary. Pharmacists are core members of antimicrobial stewardship and undertake multiple roles to accomplish the goals of the program. As antimicrobial stewardship continues to expand across the patient care continuum, pharmacists will serve a vital role in preserving the armamentarium of antimicrobials and improving quality of patient care.

Hospital discharge in patients at risk of surgical site infection: antimicrobial stewardship at Ferrara University Hospital, Italy

INTRODUCTION

The appropriate use of antibiotics is a global priority in order to avoid antibiotic resistance. Up to 50% of antibiotics usage in hospital is inappropriate (e.g. prolonged surgical prophylaxis, "defensive medicine" approach). In 2015, at the Ferrara University Hospital, an antimicrobial stewardship intervention to reduce antimicrobial prescription at the time of hospital discharge in patients at risk of surgical site infection was implemented. This programme included: update meetings for health professionals, focused meetings for critical wards, reviews of some surgical prophylaxis protocols, recommendations to reduce broad-spectrum antimicrobials use, and planning of an audit. The purpose of this study has been to evaluate the effect of this antimicrobial stewardship programme.

METHODS

To evaluate the effect of this intervention, a study has been carried out including inpatients in surveillance for surgical site infection who had surgery during the last quarter of 2014 (pre-intervention group; 461 patients) and of 2015 (post-intervention group; 532 patients).

RESULTS

The proportion of patients with prescription of at least one antimicrobial at discharge decreased from 33% to 24.4% (p = 0.002). The most prescribed categories of antimicrobials in both groups were the combination of penicillins with beta-lactamase inhibitors (with prescription rate reduced from 21.9% to 18%; p = 0.13) and fluoroquinolones (from 8.2% to 3.2%; p < 0.001).

CONCLUSIONS

This statistically significant reduction in antimicrobial prescription after the intervention was registered without a change in surgical site infections rate (from 3.5% to 3.2%; p = 0.08). Therefore, this intervention was effective in reducing the antimicrobial prescription at discharge, without affecting patients' safety.