Effect of a comprehensive, multidisciplinary, educational program on the use of antibiotics in a geriatric university hospital

Do Inpatient Antimicrobial Stewardship Programs Help Us in the Battle Against Antimicrobial Resistance?

BACKGROUND

Antibiotic stewardship programs (ASPs) have demonstrated success at reducing costs, yet there is limited quality evidence of their effectiveness in reducing infections of high-profile drug-resistant organisms.

METHODS

This retrospective, cohort study included all Kaiser Permanente Southern California (KPSC) members aged ≥18 years hospitalized in 9 KPSC hospitals from 1 January 2008 to 31 December 2016. We measured the impact of staggered ASP implementation on consumption of 18 ASP-targeted antibiotics using generalized linear mixed-effects models. We used multivariable generalized linear mixed-effects models to estimate the adjusted effect of an ASP on rates of infection with drug-resistant organisms. Analyses were adjusted for confounding by time, cluster effects, and patient- and hospital-level characteristics.

RESULTS

We included 765 111 hospitalizations (288 257 pre-ASP, 476 854 post-ASP). By defined daily dose, we found a 6.1% (-7.5% to -4.7%) overall decrease antibiotic use post-ASP; by days of therapy, we detected a 4.3% (-5.4% to -3.1%) decrease in overall use of antibiotics. The number of prescriptions increased post-ASP (1.04 [1.03-1.05]). In adjusted analyses, we detected an overall increase in vancomycin-resistant enterococci infections post-ASP (1.37 [1.10-1.69]). We did not detect a change in the rates of extended-spectrum beta-lactamase, carbapenem-resistant Enterobacteriaceae, and multidrug-resistant Pseudomonas aeruginosa infections post-ASP.

CONCLUSIONS

ASPs with successful reductions in consumption of targeted antibiotics may not see changes in infection rates with antibiotic-resistant organisms in the 2 to 6 years post-implementation. There are likely differing timescales for reversion to susceptibility across organisms and antibiotics, and unintended consequences from compensatory prescribing may occur.

Antimicrobial Stewardship and the Infection Control Practitioner: A Natural Alliance

Antibiotic overuse and misuse has contributed to rising rates of multidrug-resistant organisms and Clostridioides difficile. Decreasing antibiotic misuse has become a national public health priority. This review outlines the goals of antimicrobial stewardship, essential members of the program, implementation strategies, approaches to measuring the program's impact, and steps needed to build a program. Highlighted is the alliance between antimicrobial stewardship programs and infection prevention programs in their efforts to improve antibiotic use, improve diagnostic stewardship for C difficile and asymptomatic bacteriuria, and decrease health care-associated infections and the spread of multidrug-resistant organisms.

Estrategias de protección antimicrobiana en el cuidado de heridas: evidencia para el uso de apósitos recubiertos con DACC

BACKGROUND

Antimicrobial resistance (AMR) is one of the most serious health threats globally. The development of new antimicrobials is not keeping pace with the evolution of resistant microorganisms, and novel ways of tackling this problem are required. One of such initiatives has been the development of antimicrobial stewardship programmes (AMS). The use of wound dressings that employ a physical sequestration and retention approach to reduce bacterial burden offers a novel approach to support AMS. Bacterial-binding by dressings and their physical removal can minimise their damage and prevent the release of harmful endotoxins.

OBJECTIVE

To highlight AMS to promote the correct use of antimicrobials and to investigate how dialkylcarbamyl chloride (DACC)-coated dressings can support AMS.

METHOD

MEDLINE, Cochrane Database of Systematic Reviews, and Google Scholar were searched to identify articles relating to AMS, and the use of wound dressings in the prevention and treatment of wound infections. The evidence supporting alternative wound dressings that can reduce bioburden and prevent wound infection in a way that does not kill or damage the microorganisms were reviewed.

RESULTS

The evidence demonstrated that using bacterial-binding wound dressings that act in a physical manner (eg, DACC-coated dressings) to preventing infection in both acute and hard-to-heal wounds does not exacerbate AMR and supports AMS.

CONCLUSION

Some wound dressings work via a mechanism that promotes the binding and physical sequestration and removal of intact microorganisms from the wound bed (eg, a wound dressing that uses DACC technology to prevent/reduce infection). They provide a valuable tool that aligns with the requirements of AMS by effectively reducing wound bioburden without inducing/selecting for resistant bacteria.

Antimicrobial stewardship strategies in wound care: evidence to support the use of dialkylcarbamoyl chloride (DACC)- coated wound dressings

BACKGROUND

Traditionally, infections are treated with antimicrobials (for example, antibiotics, antiseptics, etc), but antimicrobial resistance (AMR) has become one of the most serious health threats of the 21st century (before the emergence of COVID-19). Wounds can be a source of infection by allowing unconstrained entry of microorganisms into the body, including antimicrobial-resistant bacteria. The development of new antimicrobials (particularly antibiotics) is not keeping pace with the evolution of resistant microorganisms and novel ways of addressing this problem are urgently required. One such initiative has been the development of antimicrobial stewardship (AMS) programmes, which educate healthcare workers, and control the prescribing and targeting of antimicrobials to reduce the likelihood of AMR. Of great importance has been the European Wound Management Association (EWMA) in supporting AMS by providing practical recommendations for optimising antimicrobial therapy for the treatment of wound infection. The use of wound dressings that use a physical sequestration and retention approach rather than antimicrobial agents to reduce bacterial burden offers a novel approach that supports AMS. Bacterial-binding by dressings and their physical removal, rather than active killing, minimises their damage and hence prevents the release of damaging endotoxins.

AIM

Our objective is to highlight AMS for the promotion of the judicious use of antimicrobials and to investigate how dialkylcarbamoyl chloride (DACC)-coated dressings can support AMS goals.

METHOD

MEDLINE, Cochrane Database of Systematic Reviews, and Google Scholar were searched to identify published articles describing data relating to AMS, and the use of a variety of wound dressings in the prevention and/or treatment of wound infections. The evidence supporting alternative wound dressings that can reduce bioburden and prevent and/or treat wound infection in a manner that does not kill or damage the microorganisms (for example, by actively binding and removing intact microorganisms from wounds) were then narratively reviewed.

RESULTS

The evidence reviewed here demonstrates that using bacterial-binding wound dressings that act in a physical manner (for example, DACC-coated dressings) as an alternative approach to preventing and/or treating infection in both acute and hard-to-heal wounds does not exacerbate AMR and supports AMS.

CONCLUSION

Some wound dressings work via a mechanism that promotes the binding and physical uptake, sequestration and removal of intact microorganisms from the wound bed (for example, a wound dressing that uses DACC technology to successfully prevent/reduce infection). They provide a valuable tool that aligns with the requirements of AMS (for example, reducing the use of antimicrobials in wound treatment regimens) by effectively reducing wound bioburden without inducing/selecting for resistant bacteria.

Antibiotic stewardship from a decision-making, behavioral economics, and incentive design perspective

Antibiotic-resistant infections cause over 20 thousand deaths and $20 billion annually in the United States. Antibiotic prescribing decision making can be described as a "tragedy of the commons" behavioral economics problem, for which individual best interests affecting human decision-making lead to suboptimal societal antibiotic overuse. In 2015, the U.S. federal government announced a $1.2 billion National Action Plan to combat resistance and reduce antibiotic use by 20% in inpatient settings and 50% in outpatient settings by 2020. We develop and apply a behavioral economics model based on game theory and "tragedy of the commons" concepts to help illustrate why rational individuals may not practice ideal stewardship and how to potentially structure three specific alternate approaches to accomplish these objectives (collective cooperative management, usage taxes, resistance penalties), based on Ostrom's economic governance principles. Importantly, while each approach can effectively incentivize ideal stewardship, the latter two do so with 10-30% lower utility to all providers. Encouraging local or state-level self-managed cooperative stewardship programs thus is preferred to national taxes and penalties, in contrast with current trends and with similar implications in other countries.

The impact of antimicrobial stewardship program implementation at four tertiary private hospitals: results of a five-years pre-post analysis

Background

Antimicrobial stewardship (AMS) programs have shown to reduce the emergence of antimicrobial resistance (AMR) and health-care-associated infections (HAIs), and save health-care costs associated with an inappropriate antimicrobial use. The primary objective of this study was to compare the consumption and cost of antimicrobial agents using defined daily dose (DDD) and direct cost of antibiotics before and after the AMS program implementation. Secondary objective was to determine the rate of HAIs [Clostridium difficile (C. difficile), ventilator-associated pneumonia (VAP), and central line-associated bloodstream infection (CLABSI) before and after the AMS program implementation.

Methods

This is a pre-post quasi-experimental study. Adult inpatients were enrolled in a prospective fashion under the active AMS arm and compared with historical inpatients who were admitted to the same units before the AMS implementation. Study was conducted at four tertiary private hospitals located in two cities in Saudi Arabia. Adult inpatients were enrolled under the pre- AMS arm and post- AMS arm if they were on any of the ten selected restricted broad-spectrum antibiotics (imipenem/cilastatin, piperacillin/tazobactam, colistin, tigecycline, cefepime, meropenem, ciprofloxacin, moxifloxacin, teicoplanin and linezolid).

Results

A total of 409,403 subjects were recruited, 79,369 in the pre- AMS control and 330,034 in the post- AMS arm. Average DDDs consumption of all targeted broad-spectrum antimicrobials from January 2016 to June 2019 post- AMS launch was lower than the DDDs use of these agents pre- AMS (233 vs 320 DDDs per 1000 patient-days, p = 0.689). Antimicrobial expenditures decreased by 28.45% in the first year of the program and remained relatively stable in subsequent years, with overall cumulative cost savings estimated at S.R. 6,286,929 and negligible expenses of S.R. 505,115 (p = 0.648). Rates of healthcare associated infections involving C. difficile, VAP, and CLABSI all decreased significantly after AMS implementation (incidence of HAIs in 2015 compared to 2019: for C. difficile, 94 vs 13, p = 0.024; for VAP, 24 vs 6, p = 0.001; for CLABSI, 17 vs 1, p = 0.000; respectively).

Conclusion

Implementation of AMS program at HMG healthcare facilities resulted in reduced antimicrobials use and cost, and lowered incidence of healthcare associated infections.

Hospital Antibiotic Stewardship Programs - Qualitative analysis of numerous hospitals in a developing country

Antimicrobial stewardship programs (ASP) are an essential practice to prevent increasing resistance against antibiotics. A successful ASP monitors not only prescribing patterns and practices but also contributes in minimizing the toxic effects of antibiotics. Moreover, ASP also facilitates the selection of disease specific antibiotics and enforces rules and regulations to rationalize the use of antibiotics. The aim of the study is to highlight the core elements of Hospital Antibiotic Stewardship Programs in Karachi. The key elements proposed by center of disease control (CDC) such as; leadership, accountability, drug expertise, actions to support optimal antibiotic use, tracking (monitoring antibiotic prescribing, use and resistance), reporting information to staff on improving antibiotic use and resistance and education were evaluated on Yes/No scale. The data was collected from 44 hospitals of different categories in Karachi and all the major elements were studied. It was observed that all the hospitals in one setting failed to comply with all the guidelines. It has been concluded that efforts should be made to design ASP at each hospital and implemented through suitable policies and procedures.

Value of hospital antimicrobial stewardship programs [ASPs]: a systematic review

Background

Hospital antimicrobial stewardship programs (ASPs) aim to promote judicious use of antimicrobials to combat antimicrobial resistance. For ASPs to be developed, adopted, and implemented, an economic value assessment is essential. Few studies demonstrate the cost-effectiveness of ASPs. This systematic review aimed to evaluate the economic and clinical impact of ASPs.

Methods

An update to the Dik et al. systematic review (2000–2014) was conducted on EMBASE and Medline using PRISMA guidelines. The updated search was limited to primary research studies in English (30 September 2014–31 December 2017) that evaluated patient and/or economic outcomes after implementation of hospital ASPs including length of stay (LOS), antimicrobial use, and total (including operational and implementation) costs.

Results

One hundred forty-six studies meeting inclusion criteria were included. The majority of these studies were conducted within the last 5 years in North America (49%), Europe (25%), and Asia (14%), with few studies conducted in Africa (3%), South America (3%), and Australia (3%). Most studies were conducted in hospitals with 500–1000 beds and evaluated LOS and change in antibiotic expenditure, the majority of which showed a decrease in LOS (85%) and antibiotic expenditure (92%). The mean cost-savings varied by hospital size and region after implementation of ASPs. Average cost savings in US studies were $732 per patient (range: $2.50 to $2640), with similar trends exhibited in European studies. The key driver of cost savings was from reduction in LOS. Savings were higher among hospitals with comprehensive ASPs which included therapy review and antibiotic restrictions.

Conclusions

Our data indicates that hospital ASPs have significant value with beneficial clinical and economic impacts. More robust published data is required in terms of implementation, LOS, and overall costs so that decision-makers can make a stronger case for investing in ASPs, considering competing priorities. Such data on ASPs in lower- and middle-income countries is limited and requires urgent attention.

Multifaceted intervention to curb in-hospital over-prescription of proton pump inhibitors: A longitudinal multicenter quasi-experimental before-and-after study

BACKGROUND

Proton pump inhibitors (PPIs) are indicated for a restricted number of clinical conditions, and their misuse can lead to several adverse effects. Despite that, the proportion of overuse is alarmingly high.

OBJECTIVE

To test the efficacy of a multifaceted strategy in order to achieve a significant reduction of new PPI prescriptions at discharge in hospitalized patients.

DESIGN

Multicenter longitudinal quasi-experimental before-and-after study conducted from July 1st, 2014 to June 30th, 2017.

PARTICIPANTS

44,973 admissions in a network of 5 public teaching hospitals of the Italian-speaking region of Switzerland.

INTERVENTION

Multifaceted strategy consisting in a continuous transparent monitoring-benchmarking and in capillary educational interventions applied in the internal medicine departments. To confirm the causality of the results we monitored the trend of new PPI prescriptions in the, not exposed to the intervention, surgery departments of the same hospital network.

MAIN MEASURES

New PPI prescriptions at hospital discharge.

KEY RESULTS

Over the 36month study period 44,973 patient files were analyzed. At admission, comparing internal medicine vs. surgery departments, 44.9% vs. 23.3% of patients were already being treated with a PPI. The annual rate of new PPI prescriptions, for internal medicine showed a decreasing trend: 19, 19, 18, 16% in years 2014, 2015, 2016, 2017, respectively (p<0.001, 2014 vs. 2017; p-for-trend <0.001), while an increasing rate was found in the surgery departments in the same years: 30, 29, 36, 36%, respectively (p<0.001, 2014 vs. 2017; p-for-trend <0.001). The case mix was significantly associated with the probability of new PPI prescriptions in both departments (OR1.35, 95% CI 1.26-1.44 for internal medicine and 1.24, 95% CI 1.19-1.30 for surgery).

CONCLUSIONS

The introduction of a multifaceted intervention significantly reduced the time trend of PPI prescriptions at hospital discharge in internal medicine departments. Further studies are needed to confirm whether the strategy proposed could contribute to optimize the in-hospital drug prescription behavior in other healthcare settings as well.

A Systematic Review of Quality Indicators for Appropriate Antibiotic Use in Hospitalized Adult Patients

Many quality indicators for appropriate antibiotic use have been developed. We aimed to make a systematic inventory, including the development methodology and validation procedures, of currently available quality indicators (QIs) for appropriate antibiotic use in hospitalized adult patients. We performed a literature search in the Pubmed interface. From the included articles we abstracted i) the indicators developed ii) the type of infection the QIs applied to iii) study design used for the development of the QIs iv) relation of the QIs to outcome measures v) whether the QIs were validated and vi) the characteristics of the validation cohort. Fourteen studies were included, in which 200 QIs were developed. The most frequently mentioned indicators concerned empirical antibiotic therapy according to the guideline (71% of studies), followed by switch from IV to oral therapy (64% of studies), followed by drawing at least two sets of blood cultures and change to pathogen-directed therapy based on culture results (57% of studies). Most QIs were specifically developed for lower respiratory tract infection, urinary tract infection or sepsis. A RAND-modified Delphi procedure was used in the majority of studies (57%). Six studies took outcome measures into consideration during the procedure. Five out of fourteen studies (36%) tested the clinimetric properties of the QIs and 65% of the tested QIs were considered valid. Many studies report the development of quality indicators for appropriate antibiotic use in hospitalized adult patients. However, only a small number of studies validated the developed QIs. Future validation of QIs is needed if we want to implement them in daily practice.

Current State of Antimicrobial Stewardship in Children's Hospital Emergency Departments

BACKGROUND Antimicrobial stewardship programs (ASPs) effectively optimize antibiotic use for inpatients; however, the extent of emergency department (ED) involvement in ASPs has not been described. OBJECTIVE To determine current ED involvement in children's hospital ASPs and to assess beliefs and preferred methods of implementation for ED-based ASPs. METHODS A cross-sectional survey of 37 children's hospitals participating in the Sharing Antimicrobial Resistance Practices collaboration was conducted. Surveys were distributed to ASP leaders and ED medical directors at each institution. Items assessed included beliefs regarding ED antibiotic prescribing, ED prescribing resources, ASP methods used in the ED such as clinical decision support and clinical care guidelines, ED participation in ASP activities, and preferred methods for ED-based ASP implementation. RESULTS A total of 36 ASP leaders (97.3%) and 32 ED directors (86.5%) responded; the overall response rate was 91.9%. Most ASP leaders (97.8%) and ED directors (93.7%) agreed that creation of ED-based ASPs was necessary. ED resources for antibiotic prescribing were obtained via the Internet or electronic health records (EHRs) for 29 hospitals (81.3%). The main ASP activities for the ED included production of antibiograms (77.8%) and creation of clinical care guidelines for pneumonia (83.3%). The ED was represented on 3 hospital ASP committees (8.3%). No hospital ASPs actively monitored outpatient ED prescribing. Most ASP leaders (77.8%) and ED directors (81.3%) preferred implementation of ED-based ASPs using clinical decision support integrated into the EHR. CONCLUSIONS Although ED involvement in ASPs is limited, both ASP and ED leaders believe that ED-based ASPs are necessary. Many children's hospitals have the capability to implement ED-based ASPs via the preferred method: EHR clinical decision support. Infect Control Hosp Epidemiol 2017;38:469-475.

Potentially Inappropriate Medications in Elderly Haemodialysis Patients Using the STOPP Criteria

Background

Polypharmacy is commonly applied to elderly haemodialysis patients for treating terminal renal failure and multiple co-morbidities. Potentially inappropriate medications (PIMs) in multidrug regimens in geriatric populations can be identified using specially designed screening tools.

Objective

The aims of this study were to estimate the prevalence of PIMs by applying the Screening Tool of Older Persons’ Prescriptions (STOPP) criteria and the Beers criteria to elderly haemodialysis patients and to assess the association of some risk factors with the presence of PIMs.

Methods

Fifty-one elderly haemodialysis patients participated; their median age was 74 (range 65–89) years, and 77 % of them were male. Demographic data, co-morbidity and medication lists were collected from the electronic medical records of the patients. The STOPP criteria were applied by two physicians independently to identify PIMs. The association of some risk factors with PIMs were assessed using Fisher’s exact test.

Results

The patients used a median of 13 (range 7–21) medications per day. The overall prevalence of PIMs using the STOPP criteria was 63 %, and using the Beers criteria was 43 %. The most prevalent PIMs were proton-pump inhibitors. Benzodiazepines and first-generation antihistamines were related to side effects such as falls in the previous 3 months, and calcium-channel blockers were associated with chronic constipation. The number of PIMs was not significantly associated with number of medications, age, sex and co-morbidity.

Conclusions

The STOPP criteria revealed a high prevalence of PIMs in a population of elderly patients receiving haemodialysis.

Implementation of an antimicrobial stewardship program targeting residents with urinary tract infections in three community long-term care facilities: a quasi-experimental study using time-series analysis

BACKGROUND

Asymptomatic bacteriuria in the elderly commonly results in antibiotic administration and, in turn, contributes to antimicrobial resistance, adverse drug events, and increased costs. This is a major problem in the long-term care facility (LTCF) setting, where residents frequently transition to and from the acute-care setting, often transporting drug-resistant organisms across the continuum of care. The goal of this study was to assess the feasibility and efficacy of antimicrobial stewardship programs (ASPs) targeting urinary tract infections (UTIs) at community LTCFs.

METHODS

This was a quasi-experimental study targeting antibiotic prescriptions for UTI using time-series analysis with 6-month retrospective pre-intervention and 6-month intervention period at three community LTCFs. The ASP team (infectious diseases (ID) pharmacist and ID physician) performed weekly prospective audit and feedback of consecutive prescriptions for UTI. Loeb clinical consensus criteria were used to assess appropriateness of antibiotics; recommendations were communicated to the primary treating provider by the ID pharmacist. Resident outcomes were recorded at subsequent visits. Generalized estimating equations using segmented regression were used to evaluate the impact of the ASP intervention on rates of antibiotic prescribing and antibiotic resistance.

RESULTS

One-hundred and four antibiotic prescriptions for UTI were evaluated during the intervention, and recommendations were made for change in therapy in 40 (38 %), out of which 10 (25 %) were implemented. Only eight (8 %) residents started on antibiotics for UTI met clinical criteria for antibiotic initiation. An immediate 26 % decrease in antibiotic prescriptions for UTI during the ASP was identified with a 6 % reduction continuing through the intervention period (95 % Confidence Interval ([CI)] for the difference: -8 to -3 %). Similarly, a 25 % immediate decrease in all antibiotic prescriptions was noted after introduction of the ASP with a 5 % reduction continuing throughout the intervention period (95 % CI: -8 to -2 %). No significant effect was noted on resistant organisms or Clostridium difficile.

CONCLUSION

Weekly prospective audit and feedback ASP in three community LTCFs over 6 months resulted in antibiotic utilization decreases but many lost opportunities for intervention.

Appropriate prescribing in the elderly: Current perspectives

Advances in medical therapeutics have undoubtedly contributed to health gains and increases in life expectancy over the last century. However, there is growing evidence to suggest that therapeutic decisions in older patients are frequently suboptimal or potentially inappropriate and often result in negative outcomes such as adverse drug events, hospitalisation and increased healthcare resource utilisation. Several factors influence the appropriateness of medication selection in older patients including age-related changes in pharmacokinetics and pharmacodynamics, high numbers of concurrent medications, functional status and burden of co-morbid illness. With ever-increasing therapeutic options, escalating proportions of older patients worldwide, and varying degrees of prescriber education in geriatric pharmacotherapy, strategies to assist physicians in choosing appropriate pharmacotherapy for older patients may be helpful. In this paper, we describe important age-related pharmacological changes as well as the principal domains of prescribing appropriateness in older people. We highlight common examples of drug-drug and drug-disease interactions in older people. We present a clinical case in which the appropriateness of prescription medications is reviewed and corrective strategies suggested. We also discuss various approaches to optimising prescribing appropriateness in this population including the use of explicit and implicit prescribing appropriateness criteria, comprehensive geriatric assessment, clinical pharmacist review, prescriber education and computerized decision support tools.

Evaluation of dedicated infectious diseases pharmacists on antimicrobial stewardship teams

PURPOSE

Patient care improvements and cost savings achieved by a large integrated health system through the implementation of antimicrobial stewardship programs (ASPs) at two hospitals are reported.

METHODS

A pre-post analysis was conducted to evaluate cost and quality outcomes at the two ASP sites and three similar sites within the same health system not included in the ASP initiative. The utilization of 15 targeted antimicrobials and associated costs at the five sites during designated preimplementation and postimplementation periods were compared; changes in Hospital Standardized Mortality Ratio (HSMR) values for specific infections among Medicare patients were also assessed.

RESULTS

In the year after ASP implementation, aggregate direct antimicrobial acquisition costs at the two study sites decreased 17.3% from prior-year levels and increased by 9.1% at the three comparator sites. Significant decreases in the consumption of targeted antimicrobial classes (antipseudomonals, quinolones, and agents active against methicillin-resistant Staphylococcus aureus) were observed at the ASP sites. Among the 2446 ASP interventions recorded, 72% involved discontinuing or narrowing the use of broad-spectrum antimicrobials. Although rates of health care-associated Clostridium difficile infection were little changed at both study sites after ASP implementation, HSMR data indicated substantial gains in combating sepsis and C. difficile and respiratory infections.

CONCLUSION

After implementation of ASPs at two study sites, the utilization of all classes of antibiotics decreased and antimicrobial costs per 1000 patient-days decreased. While HSMR values for sepsis (including C. difficile-associated cases) and respiratory infections improved, the rate of C. difficile infections stayed the same.

Educational interventions to improve prescription and dispensing of antibiotics: a systematic review

Background

Excessive and inappropriate antibiotic use contributes to growing antibiotic resistance, an important public-health problem. Strategies must be developed to improve antibiotic-prescribing. Our purpose is to review of educational programs aimed at improving antibiotic-prescribing by physicians and/or antibiotic-dispensing by pharmacists, in both primary-care and hospital settings.

Methods

We conducted a critical systematic search and review of the relevant literature on educational programs aimed at improving antibiotic prescribing and dispensing practice in primary-care and hospital settings, published in January 2001 through December 2011.

Results

We identified 78 studies for analysis, 47 in primary-care and 31 in hospital settings. The studies differed widely in design but mostly reported positive results. Outcomes measured in the reviewed studies were adherence to guidelines, total of antibiotics prescribed, or both, attitudes and behavior related to antibiotic prescribing and quality of pharmacy practice related to antibiotics. Twenty-nine studies (62%) in primary care and twenty-four (78%) in hospital setting reported positive results for all measured outcomes; fourteen studies (30%) in primary care and six (20%) in hospital setting reported positive results for some outcomes and results that were not statistically influenced by the intervention for others; only four studies in primary care and one study in hospital setting failed to report significant post-intervention improvements for all outcomes. Improvement in adherence to guidelines and decrease of total of antibiotics prescribed, after educational interventions, were observed, respectively, in 46% and 41% of all the reviewed studies. Changes in behaviour related to antibiotic-prescribing and improvement in quality of pharmacy practice was observed, respectively, in four studies and one study respectively.

Conclusion

The results show that antibiotic use could be improved by educational interventions, being mostly used multifaceted interventions.

Electronic supplementary material

The online version of this article (doi:10.1186/1471-2458-14-1276) contains supplementary material, which is available to authorized users.

The impact of drug interactions and polypharmacy on antimicrobial therapy in the elderly

Infectious diseases are more prevalent in older people than in younger adults, and represent a major healthcare issue in older populations. Indeed, infections in the elderly are often associated with higher morbidity and mortality, and may present atypically. Additionally, older patients are generally treated with polypharmacy regimens, which increase the likelihood of drug-drug interactions when the prescription of an antimicrobial agent is needed. A progressive impairment in the functional reserve of multiple organs may affect either pharmacokinetics or pharmacodynamics during aging. Changes in body composition occurring with advancing age, reduced liver mass and perfusion, and reduced renal excretion may affect either pharmacokinetics or pharmacodynamics. These issues need to be taken into account when prescribing antimicrobial agents to older complex patients taking multiple drugs. Interventions aimed at improving the appropriateness and safety of antimicrobial prescriptions have been proposed. Educational interventions targeting physicians may improve antimicrobial prescriptions. Antimicrobial stewardship programmes have been found to reduce the length of hospital stay and improve safety in hospitalized patients, and their use in long-term care facilities is worth testing. Computerized prescription and decision support systems, as well as interventions aimed at improving antimicrobial agents dosage in relation to kidney function, may also help to reduce the burden of interactions and inherent costs.

Special considerations of antibiotic prescription in the geriatric population

Infectious diseases pose a major challenge in the elderly for two reasons: on the one hand the susceptibility to infection increases with age and when infections occur they often present atypically-on the other hand diagnostic uncertainty is much more pronounced in the geriatric population. Reconciling the opposing aspects of optimizing patient outcomes while avoiding antibiotic overuse requires significant expertise that can be provided by an infectious diseases consultant. In addition, geriatric facilities are reservoirs for multidrug-resistant organisms and other nosocomial pathogens, and infectious diseases consultants also play a vital role in assuring appropriate infection control measures. In this review we outline the challenges of diagnosis and management of infectious diseases in the elderly, and discuss the importance of appropriate antibiotic use in the elderly in order to demonstrate the value of the infectious diseases consultant in this special setting.

['Third day intervention': an analysis of the factors associated with following the recommendations on the prescribing of antibiotics]

INTRODUCTION

Stewardship programs on the use of antibiotics usually include interventions based on non-compulsory recommendations for the prescribers. Factors related to the adherence to expert recommendations, and the implementation of these programmes in daily practice, are of interest.

METHODS

A randomized, controlled, multicentre intervention study was performed in 32 hospitalization units. Antibiotic prescriptions were evaluated by an infectious disease specialist on the third day. We describe the implementation of the intervention, the factors associated with adherence to recommendations, and the impact of the intervention.

RESULTS

A total of 3,192 interventions were carried out. Information sources used to prepare the recommendations varied significantly between centres. A modification was recommended in 65% of cases: withdrawal (47%), change in administration route (26%), change of drugs or number of antibiotics (27%), and change in dose (5%). Simplification of treatment accounted for 75% of all recommendations. Adherence was 68%, with significant differences between hospitals, and higher when the recommendations consisted of a dose adjustment or change of route, during the first intervention period, and also when recommendations were personally commented on, in addition to writing a note in the clinical chart. We did not find any reduction in antibiotic consumption or variation in the incidence of resistant pathogens.

CONCLUSIONS

An important proportion of antibiotic prescriptions may be susceptible to improvement, most of them towards simplification. The adherence to the intervention was high, but significant variations at different centres were observed, depending on the type of recommendation, and the study period. Those recommendations that were personally commented on were more followed more than those only written.

No impact of early real-time PCR screening for respiratory viruses on length of stay and use of antibiotics in elderly patients hospitalized with symptoms of a respiratory tract infection in a single center in Norway

We tested the hypothesis that the results of real-time polymerase chain reaction (PCR) analyses for respiratory viruses would reduce antibiotic treatment and length of stay in elderly patients hospitalized with respiratory infections. Within 24 h of hospital admission, a total of 922 patients aged ≥60 years were interviewed for symptoms of ongoing respiratory tract infection. Symptomatic patients were swabbed for oropharyngeal/nasopharyngeal presence of viral pathogens immediately by members of the study group. During a 2-month period, non-symptomatic volunteers among interviewed patients were swabbed as well (controls). Oropharyngeal/nasopharyngeal swabs were analyzed with real-time PCR for nine common respiratory viruses. A total of 147 out of 173 symptomatic patients and 56 non-symptomatic patients (controls) agreed to participate in the study. The patients were allocated to three cohorts: (1) symptomatic and PCR-positive (S/PCR+), (2) symptomatic and PCR-negative (S/PCR−), or (3) non-symptomatic and PCR-negative (control). There were no non-symptomatic patients with a positive PCR result. A non-significant difference in the frequency of empiric antibiotic administration was found when comparing the S/PCR+ to the S/PCR− cohort; 16/19 (84 %) vs. 99/128 (77 %) (χ² = 0.49). Antibiotic treatment was withdrawn in only two patients in the S/PCR+ cohort after receiving a positive viral diagnosis. The length of stay did not significantly differ between the S/PCR+ and the S/PCR− groups. We conclude that, at least in our general hospital setting, access to early viral diagnosis by real-time PCR had little impact on the antimicrobial treatment or length of hospitalization of elderly patients.

[Inter-individual and intra-individual pharmacokinetic variability during teicoplanin therapy in geriatric patients]

OBJECTIVES

The authors had for aim to assess the inter- and intra-individual variability of teicoplanin pharmacokinetic parameters in geriatric patients.

METHODS

A cohort of 90 geriatric patients, treated with teicoplanin, was used to build two models describing the pharmacokinetics of teicoplanin, at the beginning and at the end of treatment respectively.

RESULTS

The inter- and intra-individual variability of parameters were important as shown respectively by the coefficients of variation of pharmacokinetic parameters ranging from 125 to 694% and the half-life change during the treatment (by a factor of three to more than 30) for 60% of patients.

CONCLUSIONS

The results revealed that elderly patients presented significant variability, which was only partly explained by the renal function. Therapeutic monitoring of teicoplanin in geriatric patients should be undertaken at the end of the loading dose and repeatedly during the maintenance phase to prevent over- or underexposure.

Management and prevention of ventilator-associated pneumonia caused by multidrug-resistant pathogens

Ventilator-associated pneumonia (VAP) due to multidrug-resistant (MDR) pathogens is a leading healthcare-associated infection in mechanically ventilated patients. The incidence of VAP due to MDR pathogens has increased significantly in the last decade. Risk factors for VAP due to MDR organisms include advanced age, immunosuppression, broad-spectrum antibiotic exposure, increased severity of illness, previous hospitalization or residence in a chronic care facility and prolonged duration of invasive mechanical ventilation. Methicillin-resistant Staphylococcus aureus and several different species of Gram-negative bacteria can cause MDR VAP. Especially difficult Gram-negative bacteria include Pseudomonas aeruginosa, Acinetobacter baumannii, carbapenemase-producing Enterobacteraciae and extended-spectrum β-lactamase producing bacteria. Proper management includes selecting appropriate antibiotics, optimizing dosing and using timely de-escalation based on antiimicrobial sensitivity data. Evidence-based strategies to prevent VAP that incorporate multidisciplinary staff education and collaboration are essential to reduce the burden of this disease and associated healthcare costs.

Antimicrobial use and stewardship programs among dialysis centers

Antimicrobial exposure contributes to the emergence and spread of multidrug-resistant organisms. As rates of colonization and infection with these organisms are among the highest in the population of chronic hemodialysis patients and antimicrobial exposure among this patient population is extensive, it is imperative to prescribe antimicrobials judiciously. Thirty to forty percent of chronic hemodialysis patients receive at least one dose of antimicrobials in outpatient centers over a one-year period. Up to 30% of these antimicrobials are prescribed inappropriately, as per national guidelines. The predominant reasons include (i) failure to de-escalate to a more narrow-spectrum antimicrobial, (ii) criteria for infection, especially skin and soft tissue infections, are not met, and (iii) indications and duration for surgical prophylaxis for minor vascular-access-related procedures do not follow recommended guidelines. Vancomycin, third- or fourth-generation cephalosporins and cefazolin are the most common antimicrobials or antimicrobial classes prescribed inappropriately. Antimicrobial stewardship programs reduce both inappropriate antimicrobial exposure and associated costs. Effective strategies include (i) education, (ii) guidelines and clinical pathways, (iii) antimicrobial order forms, (iv) de-escalation therapy, and (v) prospective audit and feedback. Dialysis centers need to identify a team of individuals that will lead the antimicrobial stewardship program. Administrative and financial support for this team is essential. After implementation of the program, regular monitoring for compliance with strategies, and identifying factors that are preventing compliance are necessary. The efficacy of the program should also be evaluated at regular intervals through process and outcome measures.

Employing infectious disease physicians affects clinical and economic outcomes in regional hospitals: evidence from a population-based study

BACKGROUND/PURPOSE

Infectious disease physicians (IDPs) play a major role in patient care, infectious disease control, and antibiotic use in hospitals. The aim of this research is to explore the effects of employment of IDPs on patients' prognosis and the related medical and antibiotic expenses in hospitals.

METHODS

This population-based study provides evidence-based information on IDPs' contribution to patients' prognosis and antibiotic expenditure containment with inpatient claim data from the Taiwan Bureau of National Health Insurance in 2004. We further classified regional hospitals into those with and without IDPs and analyzed patient prognosis, length of stay, total medical expenses, and antibiotic expenses to test the effects of IDPs.

RESULTS

The likelihood of developing a poor prognosis among patients was found to be higher in non-IDP hospitals, with an odds ratio of 1.14 and a 95% confidence interval of 1.05-1.23 (p = 0.002). Medical expenses, excluding those of nonrestricted drugs, were found to be higher in the non-IDP group than in the IDP group. The total medical expenses were also found to be 10% higher in the non-IDP group than in the IDP group (p < 0.001).

CONCLUSION

Employment of IDPs was likely to improve patient prognosis and reduce overall medical expenses. It is suggested that healthcare administrators consider the employment of or investment in IDPs as a cost-effective strategy for improving patient quality of care.

Geriatric pharmacology and pharmacotherapy education for health professionals and students: a systematic review

WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT

The rate of medication errors is high, and these errors can cause adverse drug reactions. Elderly individuals are most vulnerable to adverse drug reactions. One cause of medication errors is the lack of drug knowledge on the part of different health professionals. Medical curricula have changed in recent years, resulting in less education in the basic sciences, such as pharmacology.

WHAT THIS STUDY ADDS

Our study shows that little curricular time is devoted to geriatric pharmacology and that educational programmes in geriatric pharmacology have not been thoroughly evaluated. While interest in pharmacology education has increased recently, this is not the case for geriatric pharmacology education. Education on geriatric pharmacology should have more attention in the curricula of health professionals, given the often complex pharmacotherapy in elderly patients. Educational topics should be related to the known risk factors of medication errors, such as polypharmacy, dose adjustments in organ dysfunction and psychopharmacotherapeutics.

AIMS

Given the reported high rates of medication errors, especially in elderly patients, we hypothesized that current curricula do not devote enough time to the teaching of geriatric pharmacology. This review explores the quantity and nature of geriatric pharmacology education in undergraduate and postgraduate curricula for health professionals.

METHODS

Pubmed, Embase and PsycINFO databases were searched (from 1 January 2000 to 11 January 2011), using the terms 'pharmacology' and 'education' in combination. Articles describing content or evaluation of pharmacology education for health professionals were included. Education in general and geriatric pharmacology was compared.

RESULTS

Articles on general pharmacology education (252) and geriatric pharmacology education (39) were included. The number of publications on education in general pharmacology, but not geriatric pharmacology, has increased over the last 10 years. Articles on undergraduate and postgraduate education for 12 different health disciplines were identified. A median of 24 h (from 15 min to 4956 h) devoted to pharmacology education and 2 h (1-935 h) devoted to geriatric pharmacology were reported. Of the articles on education in geriatric pharmacology, 61.5% evaluated the teaching provided, mostly student satisfaction with the course. The strength of findings was low. Similar educational interventions were not identified, and evaluation studies were not replicated.

CONCLUSIONS

Recently, interest in pharmacology education has increased, possibly because of the high rate of medication errors and the recognized importance of evidence-based medical education. Nevertheless, courses on geriatric pharmacology have not been evaluated thoroughly and none can be recommended for use in training programmes. Suggestions for improvements in education in general and geriatric pharmacology are given.

A systematic review of educational interventions to change behaviour of prescribers in hospital settings, with a particular emphasis on new prescribers

AIMS

Prescribing is a complex task and a high risk area of clinical practice. Poor prescribing occurs across staff grades and settings but new prescribers are attributed much of the blame. New prescribers may not be confident or even competent to prescribe and probably have different support and development needs than their more experienced colleagues. Unfortunately, little is known about what interventions are effective in this group. Previous systematic reviews have not distinguished between different grades of staff, have been narrow in scope and are now out of date. Therefore, to inform the design of educational interventions to change prescribing behaviour, particularly that of new prescibers, we conducted a systematic review of existing hospital-based interventions.

METHODS

Embase, Medline, SIGLE, Cinahl and PsychINFO were searched for relevant studies published 1994-2010. Studies describing interventions to change the behaviour of prescribers in hospital settings were included, with an emphasis on new prescibers. The bibliographies of included papers were also searched for relevant studies. Interventions and effectiveness were classified using existing frameworks and the quality of studies was assessed using a validated instrument.

RESULTS

Sixty-four studies were included in the review. Only 13% of interventions specifically targeted new prescribers. Most interventions (72%) were deemed effective in changing behaviour but no particular type stood out as most effective.

CONCLUSION

Very few studies have tailored educational interventions to meet needs of new prescribers, or distinguished between new and experienced prescribers. Educational development and research will be required to improve this important aspect of early clinical practice.

Evidence-based strategies for the optimization of pharmacotherapy in older people

Geriatric pharmacotherapy represents one of the biggest achievements of modern medical interventions. However, geriatric pharmacotherapy is a complex process that encompasses not only drug prescribing but also age-appropriate drug development and manufacturing, appropriate drug testing in clinical trials, rational and safe prescribing, reliable administration and assessment of drug effects, including adherence measurement and age-appropriate outcomes monitoring. During this complex process, errors can occur at any stage, and intervention strategies to improve geriatric pharmacotherapy are targeted at improving the regulatory processes of drug testing, reducing inappropriate prescribing, preventing beneficial drug underuse and use of potentially harmful drugs, and preventing adverse drug interactions. The aim of this review is to provide an update on selected recent developments in geriatric pharmacotherapy, including age discrimination in drug trials, a new healthcare professional qualification and shared competence in geriatric drug therapy, the usefulness of information and communication technologies, and pharmacogenetics. We also review optimizing strategies aimed at medication adherence focusing on complex elderly patients. Among the current information technologies, there is sufficient evidence that computerized decision-making support systems are modestly but significantly effective in reducing inappropriate prescribing and adverse drug events across healthcare settings. The majority of interventions target physicians, for whom the scientific concept of appropriate prescribing and the acceptability of the alert system used play crucial roles in the intervention's success. For prescribing optimization, results of educational intervention strategies were inconsistent. The more promising strategies involved pharmacists or multidisciplinary teams including geriatric medicine services. However, methodological weaknesses including population and intervention heterogeneity do not allow for comprehensive meta-analyses to determine the clinical value of individual approaches. In relation to drug adherence, a recent meta-analysis of 33 randomized clinical trials in older patients found behavioural interventions had significant effects, and these interventions were more effective than educational interventions. For patients with multiple conditions and polypharmacy, successful interventions included structured medication review, medication regimen simplification, administration aids and medication reminders, but no firm conclusion in favour of any particular intervention could be made. Interventions to optimize geriatric pharmacotherapy focused most commonly on pharmacological outcomes (drug appropriateness, adverse drug events, adherence), providing only limited information about clinical outcomes in terms of health status, morbidity, functionality and overall healthcare costs. Little attention was given to psychosocial and behavioural aspects of pharmacotherapy. There is sufficient potential for improvements in geriatric pharmacotherapy in terms of drug safety and effectiveness. However, just as we require evidence-based, age-specific, pharmacological information for efficient clinical decision making, we need solid evidence for strategies that consistently improve the quality of pharmacological treatments at the health system level to shape 'age-attuned' health and drug policy.

Clinical impact of unsolicited post-prescription antibiotic review in surgical and medical wards: a randomized controlled trial

This study aimed to determine the clinical course of patients and the quality of antibiotic use using a systematic and unsolicited post-prescription antibiotic review. Seven hundred and fifty-three adult patients receiving antibiotic therapy for 3-5 days were randomized to receive either a post-prescription review by the infectious disease physician (IDP), followed by a recommendation to the attending physician to modify the prescription when appropriate, or no systematic review of the prescription. In the intervention group, 63.3% of prescriptions prompted IDP recommendations, which were mostly followed by ward physicians (90.3%). Early antibiotic modifications were more frequent in the intervention group (57.1% vs. 25.7%, p <0.0001), including stopping therapy, shortening duration and de-escalating broad-spectrum antibiotics. IDP intervention led to a significant reduction of the median [IQR] duration of antibiotic therapy (6 [4-9] vs. 7 days [5-9], p <0.0001). In-hospital mortality, ICU admission and new course of antibiotic therapy rates did not differ between the two groups. Fewer patients in the intervention group were readmitted for relapsing infection (3.4% vs. 7.9%, p 0.01). There was a trend for a shorter length of hospital stay in patients suffering from community-acquired infections in the intervention group (5 days [3-10] vs. 6 days [3-14], p 0.06). This study provides clinical evidence that a post-prescription antibiotic review followed by unsolicited IDP advice is effective in reducing antibiotic exposure of patients and increasing the quality of antibiotic use, and may reduce hospital stay and relapsing infection rates, with no adverse effects on other patient outcomes.

Implementation of early goal-directed therapy and the surviving sepsis campaign resuscitation bundle in Asia

OBJECTIVE

To examine the impact of implementing sepsis bundle in multiple Asian countries, having 'team' vs. 'non-team' models of patient care.

DESIGN

Prospective cohort study.

SETTING

Eight urban hospitals, five countries in Asia.

PARTICIPANTS

Adult patients with severe sepsis or septic shock.

INTERVENTIONS

Implementation was divided into six quartiles: Baseline, Education and four Quality Improvement quartiles.

MAIN OUTCOME MEASURES

Quarterly bundle compliance and in-hospital mortality with respect to bundle completion and implementation model.

METHODS

In the team model, the implementation was championed by intensivists, where the bundle was completed in the intensive care unit. The non-team model led by emergency physicians completed the bundle in the emergency department as part of standard care.

RESULTS

Five hundred and fifty-six patients were enrolled. The overall in-hospital mortality rate was 29.9%, and 67.1% of the patients had septic shock. Compliance to the bundle was 13.3, 26.9, 37.5, 45.9, 48.8 and 54.5% over the six quartiles of implementation (P < 0.01). With team model, compliance increased from 37.5% baseline to 88.2% in the sixth quartile (P < 0.01), whereas hospitals with a non-team model increased compliance from 5.2 to 39.5% (P < 0.01). Crude in-hospital mortality was better in the patients who received the entire bundle (24.5 vs. 32.7%, P = 0.04). Bundle completion was associated with crude in-hospital mortality reduction (odds ratio 0.67, 95% confidence interval 0.45-0.99), but this survival benefit disappeared after adjustment for confounding variables.

CONCLUSIONS

Through education and quality improvement efforts, initially low sepsis bundle compliance was improved in Asia. A team model was more effective in achieving bundle compliance compared with a non-team model.

Antimicrobial stewardship

Antimicrobial resistance is increasing; however, antimicrobial drug development is slowing. Now more than ever before, antimicrobial stewardship is of the utmost importance as a way to optimize the use of antimicrobials to prevent the development of resistance and improve patient outcomes. This review describes the why, what, who, how, when, and where of antimicrobial stewardship. Techniques of stewardship are summarized, and a plan for implementation of a stewardship program is outlined.

Antimicrobial stewardship: bridging the gap between quality care and cost

PURPOSE OF REVIEW

Antibiotic resistance continues to rise, whereas development of new agents to counter it has slowed. A heightened need exists to maintain the effectiveness of currently available agents. This review focuses on the need for better antimicrobial stewardship, expected benefits of well designed antimicrobial stewardship programs (ASPs), and provides suggestions for development of an effective ASP.

RECENT FINDINGS

Healthcare-associated infections (HAIs) are a significant cause of poor treatment outcomes and elevated healthcare and societal costs worldwide. HAIs are often caused by antibiotic-resistant pathogens; overuse of antibiotics has been linked with antibiotic resistance. Benefits of improved antimicrobial stewardship include reduced emergence of antibiotic resistance, limitation of drug-related adverse events, minimization of other consequences of antibiotic use (e.g., superinfection), and reduction of societal and healthcare-related costs. In 2007, the Infectious Diseases Society of America (IDSA) and the Society for Healthcare Epidemiology of America (SHEA) provided guidelines for the development of institutional programs to enhance antimicrobial stewardship. Experiences at The Ohio State University Medical Center (OSUMC) reinforce this message, while providing specific examples of ways to optimize ASP development and implementation. The focus of an ASP should be on improving quality of care, reducing drug resistance, and cost savings. When implementing an ASP, it is important to identify those most likely to resist the ASP, understand their concerns, and develop easy-to-understand messages that address these concerns and highlight the benefits of the proposed changes. Antibiograms play a key role in identifying local and interdepartmental trends in antibiotic susceptibility or resistance. These data are important not only in devising best-treatment practices for the institution, but also in evaluating the impact of a recently implemented ASP. Other measures of the impact of an ASP should include patient outcomes and overall costs or savings.

SUMMARY

Better antimicrobial stewardship is needed to limit the emergence of antibiotic resistance, prolong the effectiveness of currently available agents, improve patient outcomes, and reduce healthcare and societal costs associated with HAIs. Guidelines from the IDSA/SHEA and experiences at OSUMC provide examples of how best to develop an institutional ASP to accomplish these goals.

Impact of antimicrobial stewardship by infection control team in a Japanese teaching hospital

The objective of this study is to investigate an effect on the antimicrobial appropriate use of the antimicrobial stewardship. We investigated the consumption of injectable antimicrobials from 2001 to 2007 and the administration period of specific antimicrobials (carbapenems, fourth-generation cephalosporins, anti-methicillin-resistant Staphylococcus aureus (MRSA) agents) in the individual patient. Since September 2004, the infection control team at Osaka University Hospital has been promoting appropriate use of antimicrobials through consultation, education, and weekly surveillance of specific antimicrobial usage. We obtained the amount of all antimicrobial injections as titer from the medical information database of the electronic medical chart system retrospectively. Antimicrobial use densities (AUD) were evaluated by measuring the number of doses administered/1000 patient-days. Although the number of inpatient admissions and operations increased 1.53- and 1.39-fold, respectively, in the seven years from 2001 to 2007, the expenditure on specific antimicrobials decreased markedly with AUD of specific antimicrobials decreasing from 39.6 to 29.2. The percentage of inpatients receiving specific antimicrobials decreased from 19.8% to 9.8%, and the ratio of the number of inpatients administered a specific antimicrobial within seven days to the number of inpatients administered each specific antimicrobial increased to over 60%. This led to reduction in the total expenditure of antimicrobials by about 100 million yen annually. The incidence of hospital-associated MRSA (HA-MRSA) infection decreased from 0.93% (2003) to 0.68% (2007). We can reduce the expenditure of antimicrobials without increasing incidence of the HA-MRSA by antimicrobial stewardship, and we think that appropriate use of antimicrobials is achieved progressively.

Managing antimicrobial resistance in intensive care units

The challenges in managing patients with infection in the intensive care unit are increased in an era where there are dwindling antimicrobial choices for multidrug-resistant pathogens. Clinicians in the intensive care unit must balance between choosing appropriate antimicrobial treatment for patients with suspected infection and utilizing antimicrobials in a judicious fashion. Improving antimicrobial utilization is a critical component to reducing antimicrobial resistance. Although providing effective antimicrobial therapy and improving antimicrobial utilization may seem to be competing goals, there are effective strategies to accomplish both. Antimicrobial stewardship programs provide an organized way to implement these strategies and can enhance the intensive care unit physician's success in improving patient outcomes and combating antimicrobial resistance in the intensive care unit.

Antimicrobial stewardship: application in the intensive care unit

Critical-care units can be barometers for appropriate antimicrobial use. There, life and death hang on empirical antimicrobial therapy for treatment of infectious diseases. With increasing therapeutic empiricism, triple-drug, broad-spectrum regimens are often necessary, but cannot be continued without fear of the double-edged sword: a life-saving intervention or loss of life following Clostridium difficile infection, infection from a resistant organism, nephrotoxicity, cardiac toxicity, and so on. While broadened initial empirical therapy is considered a standard, it must be necessary, dosed according to pharmacokinetic-pharmacodynamic principles, and stopped when no longer needed. Antimicrobial stewardship interventions shepherd these considerations in antimicrobial therapy. With pharmacists and physicians trained in infectious disease and critical care, clear-cut interventions can be focused on beginning or growing a stewardship program, or proposing future studies.

Outcomes of early switching from intravenous to oral antibiotics on medical wards

Objectives

To evaluate outcomes following implementation of a checklist with criteria for switching from intravenous (iv) to oral antibiotics on unselected patients on two general medical wards.

Methods

During a 12 month intervention study, a printed checklist of criteria for switching on the third day of iv treatment was placed in the medical charts. The decision to switch was left to the discretion of the attending physician. Outcome parameters of a 4 month control phase before intervention were compared with the equivalent 4 month period during the intervention phase to control for seasonal confounding (before–after study; April to July of 2006 and 2007, respectively): 250 episodes (215 patients) during the intervention period were compared with the control group of 176 episodes (162 patients). The main outcome measure was the duration of iv therapy. Additionally, safety, adherence to the checklist, reasons against switching patients and antibiotic cost were analysed during the whole year of the intervention (n = 698 episodes).

Results

In 38% (246/646) of episodes of continued iv antibiotic therapy, patients met all criteria for switching to oral antibiotics on the third day, and 151/246 (61.4%) were switched. The number of days of iv antibiotic treatment were reduced by 19% (95% confidence interval 9%–29%, P = 0.001; 6.0–5.0 days in median) with no increase in complications. The main reasons against switching were persisting fever (41%, n = 187) and absence of clinical improvement (41%, n = 185).

Conclusions

On general medical wards, a checklist with bedside criteria for switching to oral antibiotics can shorten the duration of iv therapy without any negative effect on treatment outcome. The criteria were successfully applied to all patients on the wards, independently of the indication (empirical or directed treatment), the type of (presumed) infection, the underlying disease or the group of antibiotics being used.

Bacteriuria in a geriatric hospital: impact of an antibiotic improvement program

OBJECTIVES

To prospectively evaluate a management approach to bacteriuria including advice from an infectious diseases consultant (IDC) in geriatric inpatients.

DESIGN

Prospective study from July 1, 2003, to June 30, 2004.

SETTING

A 205-bed geriatric university-affiliated hospital.

PARTICIPANTS

Consecutive hospitalized patients with positive urine cultures.

INTERVENTION

The hospital's infection control department developed recommendations about antimicrobial use for bacteriuria, which were discussed at staff meetings. Treatments for bacteriuria prescribed by ward physicians were reviewed by an IDC, who suggested changes where appropriate. Physicians were free to follow or to disregard the IDC's suggestions.

MEASUREMENTS

Patients with positive urine cultures (UC) were classified as having asymptomatic bacteriuria (AB), urinary tract infection (UTI) or pyelonephritis (PN). Prescribed and actual treatments were compared.

RESULTS

Of 252 consecutive positive UCs in 181 patients, 124 (49%) were classified as AB, 88 (35%) as UTI, and 38 (15%) as PN; 2 cases of prostatitis were excluded. The total number of prescribed antimicrobial days before IDC advice was 729 and the actual number (after IDC advice) was 577, for a 152-day (21%) reduction. Most of the reduction was generated by shortening the treatment duration.

CONCLUSION

Intervention of an IDC resulted in reduced antimicrobial use in older inpatients with bacteriuria.

Activity and impact on antibiotic use and costs of a dedicated infectious diseases consultant on a septic orthopaedic unit

The Orthopaedic Service of the Geneva University Hospitals engages dedicated infectious disease (ID) specialists to assist in the treatment of infected patients. We investigated the daily clinical activity and the impact on antibiotic costs in the Septic Unit since 2000.

METHODS

Retrospective analysis of various databases. Prospective survey of clinical activity from January 2008 to March 2008.

RESULTS

According to the survey, the ID specialist performed 265 first-time and 1420 follow-up consultations (average of 11.4 consultations per working day). In 88% of cases the antibiotic regimen initiated by the surgeons was approved. When the ID specialist had to change antibiotic treatment, it was for de-escalation in 43.7%, discontinuance in 32.4%, and initiation in 24.4% of cases. From April 2007 to March 2008, the ID specialist decreased total antibiotic use by 43 DDD/100 patients-days (p=0.0006) in the Septic Unit. Direct antibiotic costs decreased by US$64,380 over the same period, equal to the annual salary of the ID specialist. There was no change in the number of recurrent infections.

CONCLUSIONS

The main antibiotic-related activity of the dedicated orthopaedic ID specialist in Geneva our institution was to discontinue or adjust a pre-existing antimicrobial therapy. This activity significantly reduced antibiotic use and related costs on a septic orthopaedic unit.

The value of infectious diseases specialists: non-patient care activities

Recent developments in health care have focused efforts on both the national and local levels to reduce unnecessary health care costs and the number of hospital stays while increasing the quality of care, particularly in the context of hospital-associated infections. Infectious diseases specialists who contract to oversee infection-control and antibiotic-stewardship programs are uniquely positioned to play a pivotal role in helping hospitals to prosper in this new environment. This article will detail the available data supporting the value of infectious diseases specialists in their roles of directing antimicrobial-management and infection-control programs, maintaining health care workers' well-being, and minimizing exposure. The evidence in support of the influence of infectious diseases specialists to achieve cost-savings, decrease the length of hospital stays, and improve outcomes is robust and can be used as the framework for negotiating appropriate compensation from hospital management for these activities. Presenting this information in an amicable but definitive framework may be the linchpin to the overall success of the movement to improve quality of care while minimizing hospital costs and antimicrobial use. Developing this ability is critical to infectious diseases specialists' success as they redefine their role in the quality-of-care and risk-management arenas.