Antibiotic stewardship: A review of successful, evidence-based primary care strategies.

BACKGROUND: Antibiotic resistance is a rising global threat with only two options for mitigation: 1) invent new antibiotics and/or 2) use current antibiotics more wisely. In Australia, the majority of antibiotic usage is in the community, hence primary care has a key role.  OBJECTIVE: With no single 'magic bullet', a range of approaches is needed. The aim of this article is to describe the options and evidence in three broad categories: 1) regulatory changes such as repeats and pack sizes, 2) policy initiatives such as public campaigns, academic detailing and education and 3) clinical strategies including delayed prescribing, clinical decision support tools, practice-based audit and feedback, and patient information sheets. DISCUSSION: Australia has good antibiotic regulation and guidelines but must invest in sustained primary care stewardship programs, which should include surveillance, information for consumers, support for general practitioners and general practice training, and an ongoing evaluation and research program.

Preserving antibiotics for the future: Where Australian general practice sits on the global spectrum.

BACKGROUND: Antibiotics have revolutionised modern medicine; however, since their discovery a century ago, their effectiveness against common infections is waning. Antimicrobial resistance is one of the most important challenges of our time. Reversing the trend of increasing resistance is vital to ensure procedures such as surgery, neonatal care and organ transplants remain safe. Inappropriate use of antibiotics is the most important driver of resistance. As the vast majority of antibiotics are prescribed by general practitioners, primary care has an important part to play in preserving antibiotics for the future. OBJECTIVE: The aim of this article is to describe how antibiotic use in Australia compares globally and what can be learnt from countries with successful antimicrobial stewardship. DISCUSSION: Australia is making progress, with unnecessary use of antibiotics declining, but there is still a long way to go. The National Antimicrobial Resistance Strategy is Australia's commitment to the health of future generations. General practice is integral to its success.

A cluster randomized controlled trial of a MedicineInsight Educational Quality Improvement Programme to improve the diagnosis and treatment of chronic hepatitis C in general practice (the EQUIP-HEPC trial).

The availability of direct-acting antivirals (DAAs) sparked efforts to eliminate hepatitis C virus (HCV) in Australia. We evaluated whether an educational intervention of a 1-h discussion among staff using audit and feedback data from the MedicineInsight GP programme would improve DAA uptake. Of 296 eligible general practices in MedicineInsight, 11% opted out. Randomization stratified by practice caseload allocated 130 practices to the intervention arm and 129 to control. The primary outcome was the number of patients started on DAAs over 6 months using the negative binomial regression model adjusted for DAA prescription history and clustering by practice. Data for analysis were available for 78% of practices, which included 101 practices and 2469 DAA-naive patients with confirmed/possible HCV in the intervention arm, and 100 practices and 2466 patients in the control arm. At baseline, 49.5% of practices had prescribed ≥1 DAA in the past year; 18.9% of HCV patients had already been treated with DAAs; the mean age of DAA-naive HCV patients was 43 years old, and 57% were men. Over 6 months, 43 patients in the intervention arm and 36 in the control arm started DAAs (adjusted IRR 1.19; 95% CI 0.67-2.11, p = 0.55). In the first 3 months, 27 vs 16 patients started DAAs (adjusted IRR 1.77, 0.88-3.58; p = 0.111). Few patients were started on DAAs, and a facilitated discussion in HCV management did not lead to a significant increase. Alternative measures, such as incentivizing GP initiations or patients, are suggested to address remaining barriers to DAA uptake in Australian primary care. Australian New Zealand Clinical Trial Registry (ANZCTR) Registration Number: ACTRN12619000508178p.

The changing characteristics of patients with chronic hepatitis C prescribed direct acting antiviral medicines in general practice since listing of the medicines on the Australian Pharmaceutical Benefits Scheme.

BACKGROUND AND AIM: The primary objective of this study was to determine whether the characteristics of patients prescribed direct acting antiviral (DAA) medicines have changed since initial listing of the medicines on the Australian Pharmaceutical Benefits Scheme (PBS). METHODS: A cross-sectional study was conducted using data from MedicineInsight, an Australian database of general practice electronic health records, from March 2016 to August 2018. We compared sociodemographic, comorbidity, and clinical characteristics of patients aged at least 18 years who were prescribed at least one DAA in the first 4 months of PBS listing in 2016 with those prescribed at least one DAA in 2018. RESULTS: There were 2251 eligible adult patients prescribed a DAA during the study period, 62% were men and 59% were aged 50 years and older. Patients prescribed DAA medicines initially were older (aged ≥50 years: 67.9% vs 49.3%; P < 0.001), and more likely to have liver cirrhosis (14.2% vs 8.4%; P = 0.01) and an aminotransferase to platelet ratio index (APRI) score >1 (20.4% vs 8.9%; P < 0.001) than those prescribed DAA medicines in 2018. A greater proportion of patients in regional/remote (46.5% vs 35.6%; P < 0.001) and socioeconomically disadvantaged areas (44.4% vs 34.5%; P = 0.003) accessed treatment in 2018 compared with 2016. CONCLUSIONS: Despite evidence of decreasing uptake of DAA medicines across Australia, this study indicates broadened uptake among younger age groups and those residing in regional/remote and socioeconomically disadvantaged areas since 2016. While uptake of DAA medicines in some population subgroups appears to have improved, continuous efforts to improve uptake across the Australian population are essential.

Relationship between antimicrobial-resistance programs and antibiotic dispensing for upper respiratory tract infection: An analysis of Australian data between 2004 and 2015.

Objective NPS MedicineWise aims to ensure that medicines are prescribed and used in a manner consistent with current evidence-based best practice. A series of nationwide educational and advertising interventions for general practitioners and consumers were implemented in Australia between 2009 and 2015 with the aim of reducing antibiotic prescriptions for upper respiratory tract infections (URTIs). The work described in this paper quantifies the change in antibiotic dispensing following these interventions. Methods Antibiotic dispensing data between 2004 and 2015 were obtained from a national claims database. A Bayesian structural time series model was used to forecast a series of antibiotic dispensing volumes expected to have occurred if the interventions had not taken place. These were compared with the volumes that were actually observed to estimate the intervention effect. Results On average, 126,536 fewer antibiotics were dispensed each month since the intervention programs began in 2009 (95% Bayesian credible interval = 71,580-181,490). This change represents a 14% total reduction in dispensed scripts after the series of intervention programs began in 2009. Conclusions Continual educational intervention programs that emphasise the judicious use of antibiotics may effectively reduce inappropriate prescribing of antibiotics for the treatment of URTIs at a national level.

Reducing antibiotic prescribing in Australian general practice: time for a national strategy.

In Australia, the antibiotic resistance crisis may be partly alleviated by reducing antibiotic use in general practice, which has relatively high prescribing rates - antibiotics are mostly prescribed for acute respiratory infections, for which they provide only minor benefits. Current surveillance is inadequate for monitoring community antibiotic resistance rates, prescribing rates by indication, and serious complications of acute respiratory infections (which antibiotic use earlier in the infection may have averted), making target setting difficult. Categories of interventions that may support general practitioners to reduce prescribing antibiotics are: regulatory (eg, changing the default to "no repeats" in electronic prescribing, changing the packaging of antibiotics to facilitate tailored amounts of antibiotics for the right indication and restricting access to prescribing selected antibiotics to conserve them), externally administered (eg, academic detailing and audit and feedback on total antibiotic use for individual GPs), interventions that GPs can individually implement (eg, delayed prescribing, shared decision making, public declarations in the practice about conserving antibiotics, and self-administered audit), supporting GPs' access to near-patient diagnostic testing, and public awareness campaigns. Many unanswered clinical research questions remain, including research into optimal implementation methods. Reducing antibiotic use in Australian general practice will require a range of approaches (with various intervention categories), a sustained effort over many years and a commitment of appropriate resources and support.

Antibiotic therapy for inpatients with community-acquired pneumonia in a developing country.

PURPOSE: The aim of this study was to identify antibiotic prescription patterns for community-acquired pneumonia (CAP) in Vietnam. METHODS: Medical records for CAP adult patients admitted to 10 hospitals across the country were randomly selected from admission lists during the peak pneumonia season. CAP cases were identified from manual record reviews by clinical pharmacists. Data was collected using a standard data collection tool including patient clinical features on admission, comorbidities, microbiological culture results, and antibiotic regimens. Pneumonia severity was estimated using the CURB-65 score. RESULTS: A total of 649 medical records for adult patients (55.2% male and 52.3% urban residents, median age 68 years) met the selection criteria for CAP. Pneumonia severity was assessed as mild (64.1% of patients), moderate (23.0%), and severe (9.2%). Antibiotics were most frequently administered intravenously (93.4%) and as combination therapy (dual therapy 54.4%, monotherapy 42.5%, and triple therapy 3.1% of patients) regardless of CAP severity. Third-generation cephalosporins were used most frequently (29.3% as monotherapy and 40.4% as combination therapy). Third-generation cephalosporins were most commonly combined with penicillins and/or quinolones. CONCLUSIONS: This first nationwide study provides a baseline profile of antibiotic use in the treatment of CAP. Third-generation cephalosporins were widely used for initial empirical management of CAP, often in combination with quinolones, regardless of CAP severity. The study will assist in providing an evidence base to inform new national antibiotic guidelines for CAP management and will contribute locally relevant data for the national master plan addressing antibiotic resistance and the development of educational interventions to improve CAP management.

Improving clinical decision support tools - challenges and a way forward.

Would you prescribe a drug without regulatory approval, for which the safety and efficacy are unknown? Unlikely. Would you use a clinical practice guideline that is not endorsed by a peak body, with no accessible evidence for its recommendations and with its authorship unknown? Unlikely. Do you currently use decision support tools in your prescribing software that have not been evaluated or accredited, with unknown or variable quality and reliability? Very likely.

Modelling and encoding Therapeutic Guidelines: applying ICD-10-AM and European Article Number codes.

This article reports on the assignment of ICD-10-AM and EAN codes to 2500 topics in Therapeutic Guidelines (TG). The analysis of the assignment of ICD-10-AM codes in this project has revealed that ICD-10-AM is not capable of describing the complete clinical information in the guidelines series. It is not likely that any existing single classification scheme will be capable of this and that a combination of schemes will be necessary. The TG data model was integrated with the prototype MCCA data model for drug products. This integration indicates that the representation of drugs, while not ideal, is an appropriate means of linking clinical drug reference information to drug product information.

Improving antibiotic use: 25 years of antibiotic guidelines and related initiatives.

In the late 1970s concern in Melbourne teaching hospitals over the increasing incidence of antibiotic-resistant microorganisms and inappropriate antibiotic prescribing, led to the establishment of a working party to produce guidelines on appropriate antimicrobial therapy. Therapeutic Guidelines: Antibiotic is now produced, marketed and sold by Therapeutic Guidelines Limited, an independent, not-for-profit enterprise that distils best-practice prescribing guidelines for Australian health professionals. Therapeutic Guidelines now cover all major therapeutic areas. Mere distribution of the guidelines had little impact on prescribing habits. However, targeted education campaigns have helped to improve antibiotic prescribing. The Antibiotic title remains the flagship of Therapeutic Guidelines Limited with sales, surveys and endorsements over 11 editions attesting to its wide acceptance and use. Therapeutic Guidelines: Antibiotic is one of many initiatives that have contributed to improving antibiotic use and it serves as a valuable foundation on which to build other strategies. There is demand for a consumer friendly version of the guidelines. In addition, the increasing use of computerised prescribing programs has highlighted the need for electronic guidelines to be closely integrated with decision support software.

Impact of a web-based antimicrobial approval system on broad-spectrum cephalosporin use at a teaching hospital.

OBJECTIVE: To achieve sustained improvement in use of cefotaxime and ceftriaxone (CEFX) in a major teaching hospital, as measured against national antibiotic guidelines. DESIGN AND SETTING: Pre- and post-intervention survey of CEFX use in the Royal Melbourne Hospital, a tertiary hospital in Melbourne, Victoria. INTERVENTION: Web-based antimicrobial approval system linked to national antibiotic guidelines was developed by a multidisciplinary team and implemented in March 2001. MAIN OUTCOME MEASURES: Change in rate of CEFX use (defined daily doses [DDDs] per 1000 acute occupied bed days) over 8 months pre- and 15 months post-intervention; concordance of indication for CEFX with national antibiotic guidelines pre- and post-intervention. RESULTS: CEFX use decreased from a mean of 38.3 DDDs/1000 bed days pre-intervention to 15.9, 18.7 and 21.2 DDDs/1000 bed days at 1, 4 and 15 months post-intervention. Concordance with national antibiotic guidelines rose from 25% of courses pre-intervention to 51% within 5 months post-intervention (P < 0.002). Gentamicin use also increased, from a mean of 30.0 to 48.3 DDDs/1000 bed days (P = 0.0001). CONCLUSION: The web-based antimicrobial approval system achieved a sustained reduction in CEFX use over 15 months as well as increased prescribing concordance with antibiotic guidelines. It has potential for linking to electronic prescribing and for wider use for other drugs, as well as for research into the epidemiology of antibiotic use.

Ceftriaxone and cefotaxime use in Victorian hospitals.

OBJECTIVE: To determine patterns of use of ceftriaxone and cefotaxime (CEFX) in Victorian hospitals and to identify areas for improvement. DESIGN, PATIENTS AND SETTING: A concurrent, observational evaluation of CEFX use in patients commencing a course of these drugs between 8 and 14 September, 1999, in 51 Victorian hospitals. MAIN OUTCOME MEASURES: Proportion of patients treated with CEFX; indications; duration of use; concordance with recommendations of national antibiotic guidelines (Therapeutic guidelines: antibiotic, 10th edition [AG10]). RESULTS: 671 patients were treated with CEFX. The overall rate of use was 43 patients per 1000 inpatient separations. Treatment of respiratory tract infection accounted for 352 patients (52%) and surgical prophylaxis for 99 patients (15%). Treatment of skin/soft tissue, urinary tract and gastrointestinal tract infections accounted for about 7% of patients each. The median duration of CEFX courses was 3.0 days. The overall rate of concordance with indications recommended in AG10 was 27%. The rate of concordance for empirical treatment of respiratory tract infection was 24%. Of the 195 patients treated empirically with CEFX for community-acquired respiratory tract infection and assessed as non-concordant, 64% did not have radiological evidence of pneumonia, and a further 30% did not fulfill the criteria for severe pneumonia. All courses given for surgical prophylaxis were non-concordant. CONCLUSIONS: CEFX is widely used in Victorian hospitals, mostly to treat lower respiratory tract infection and in surgical prophylaxis of infection. The rate of concordance with AG10 is low. Potential areas for intervention include empirical treatment of respiratory tract infection and use in surgical prophylaxis.