Respiratory Tract Infections In Primary Care Research Articles

Clinic Characteristics and Antibiotic Prescribing for Acute Respiratory Infections in Japan

This cross-sectional study examined clinic characteristics associated with antibiotic prescribing for acute respiratory infections in primary care in Japan.

Risk of unintended consequences from lower antibiotic prescribing for respiratory tract infections in primary care

About 60% of antibiotic prescribing in primary care is for respiratory tract infections (RTIs), some of which is likely unnecessary. There is limited evidence on the association between reduced antibiotic prescribing and adverse events. We aimed to identify associations between practice-level prescribing rates for RTIs in general practice, and patient-level adverse outcomes. We included 1471 English General Practitioner (GP) practices, linked to hospital admissions in England, from the Clinical Practice Research Datalink for 2005 to 2019. Outcomes were hospitalisations, RTI-related re-consultations and additional antibiotic prescriptions, adjusted for practice level case-mix prescribing. Prescribing rates for practices falling within the lowest and highest prescribing quintiles were 52 and 139 prescriptions per 1000 RTI-related consultations. Patients from practices in the lowest prescribing quintile did not have significantly higher risk of hospitalisation, adjusted odds ratio 0·99 (95% CI 0·96 to 1·02). Re-consultations within 30 days were significantly higher for the lowest prescribing practices, adjusted odds ratio 1·209 (1·206 to 1·212). Additional antibiotic prescriptionsand subsequent prescriptions upon re-consultationwere significantly lower for the lowest prescribing practices, adjusted odds ratio 0·317 (0·314 to 0·321) and 0·706 (0·699 to 0·712), respectively. Our results contribute to evidence on the safety of reduced antibiotic prescribing for RTIs in primary care. Results suggest that for the majority of practices, further reductions in RTI-related antibiotic prescribing should be possible without an increase in hospitalisation for pneumonia.

C-reactive protein point-of-care testing in primary care-broader implementation needed to combat antimicrobial resistance.

This study presents the perspective of an international group of experts, providing an overview of existing models and policies and guidance to facilitate a proper and sustainable implementation of C-reactive protein point-of-care testing (CRP POCT) to support antibiotic prescribing decisions for respiratory tract infections (RTIs) with the aim to tackle antimicrobial resistance (AMR). AMR threatens to render life-saving antibiotics ineffective and is already costing millions of lives and billions of Euros worldwide. AMR is strongly correlated with the volume of antibiotics used. Most antibiotics are prescribed in primary care, mostly for RTIs, and are often unnecessary. CRP POCT is an available tool and has been proven to safely and cost-effectively reduce antibiotic prescribing for RTIs in primary care. Though established in a few European countries during several years, it has still not been implemented in many European countries. Due to the complexity of inappropriate antibiotic prescribing behavior, a multifaceted approach is necessary to enable sustainable change. The effect is maximized with clear guidance, advanced communication training for primary care physicians, and delayed antibiotic prescribing strategies. CRP POCT should be included in professional guidelines and implemented together with complementary strategies. Adequate reimbursement needs to be provided, and high-quality, and primary care-friendly POCT organization and performance must be enabled. Data gathering, sharing, and discussion as incentivization for proper behaviors should be enabled. Public awareness should be increased, and healthcare professionals' awareness and understanding should be ensured. Impactful use is achieved when all stakeholders join forces to facilitate proper implementation.

An ambispective observational study on antibiotics in pulmonology department in a tertiary care hospital

Background: Respiratory tract infections (RTIs) caused by various viruses and bacteria are a major cause of morbidity and mortality worldwide. Although they are usually more severe in children, the elderly and people with weakened immune systems, people of all ages and backgrounds are susceptible to these infections. Antibiotics are commonly prescribed for RTIs in primary care in adults and children. The main purpose of this study is to monitor the use of different antibiotics for respiratory infections. Methods: It is an ambispective observational study, during which data are collected on specially designed data collection forms. The study lasted 6 months (from December 2022 to May 2023). Results: The source of data is a total of 100 patients who were prescribed at least one dose of antibiotics. Out of 100 people, 53% were men and 47% were women. LRTI and URTI are the most common conditions for which antibiotics are prescribed, and we found that the most commonly prescribed antibiotics are a higher percentage of patients using cephalosporins. Of the various cephalosporins, the most commonly prescribed is ceftriaxone, a third-generation cephalosporin. Conclusions: From this particular observational study, we concluded that the most frequently prescribed antibiotics for respiratory infections were cephalosporins, ceftriaxone, third-generation cephalosporins were most frequently prescribed, followed by macrolides, penicillin, tetracyclines, lincomycin, fluoroquinolones, oxazolidinones. The use of antibiotics helps to improve patient care by reducing side effects such as antibiotic resistance, hypersensitivity reactions, respiratory difficulties and risks associated with respiratory infections.

C-reactive protein point-of-care testing and complementary strategies to improve antibiotic stewardship in children with acute respiratory infections in primary care.

This paper provides the perspective of an international group of experts on the role of C-reactive protein (CRP) point-of-care testing (POCT) and complementary strategies such as enhanced communication skills training and delayed prescribing to improve antibiotic stewardship in the primary care of children presenting with an acute illness episode due to an acute respiratory tract infection (ARTI). To improve antibiotics prescribing decisions, CRP POCT should be considered to complement the clinical assessment of children (6 months to 14 years) presenting with an ARTI in a primary care setting. CRP POCT can help decide whether a serious infection can be ruled out, before deciding on further treatments or management, when clinical assessment is unconclusive. Based on the evidence currently available, a CRP value can be a valuable support for clinical reasoning and facilitate communication with patients and parents, but the clinical assessment should prevail when making a therapy or referral decision. Nearly half of children tested in the primary care setting can be expected to have a CRP value below 20 mg/l, in which case it is strongly suggested to avoid prescribing antibiotics when the clinical assessment supports ruling out a severe infection. For children with CRP values greater than or equal to 20 mg/l, additional measures such as additional diagnostic tests, observation time, re-assessment by a senior decision-maker, and specialty referrals, should be considered.

Antibiotic prescribing in remote versus face-to-face consultations for acute respiratory infections in primary care in England: an observational study using target maximum likelihood estimation

The COVID-19 pandemic has led to an ongoing increase in the use of remote consultations in general practice in England. Although the evidence is limited, there are concerns that the increase in remote consultations could lead to more antibiotic prescribing. In this cohort study, we used patient-level primary care data from the Clinical Practice Research Datalink to estimate the association between consultation mode (remote versus face-to-face) and antibiotic prescribing in England for acute respiratory infections (ARI) between April 2021 and March 2022. Eligibility criteria were applied at both practice-level and patient-level. 400 practices in England were sampled at random and then 600,000 patients were randomly sampled from the eligible patients (whose sex was recorded). Consultations for acute respiratory infections were identified. All antibiotic prescriptions were included, with the exception of antituberculosis drugs and antileprotic drugs, as identified through chapter 5.1 of the British National Formulary. The CPRD Aurum data was linked to the COVID-19 ONS infection survey by region. All analyses were done at the individual level. Repeated consultations from the same patient within 7 days were grouped together. We used targeted maximum likelihood estimation, a causal machine learning method with adjustment for infection type and patient-level, clinician-level and practice-level factors. There were 45,997 ARI consultations (34,555 unique patients) within the study period, of which 28,127 were remote and 17,870 were face-to-face. For children, 48% of consultations were remote and, for adults, 66% were remote. For children, 42% of remote and 43% of face-to-face consultations led to an antibiotic prescription; the equivalent values for adults were 52% and 42%, respectively. After adjustment with TMLE, adults with a remote consultation had 23% (odds ratio [OR] 1.23, 95% CI: 1.18-1.29) higher chance of being prescribed antibiotics than if they had been seen face-to-face. We found no significant association between consultation mode and antibiotic prescribing in children (OR 1.04 95% CI: 0.98-1.11). The higher rates of antibiotic prescribing in remote consultations for adults are cause for concern. We see no significant difference in antibiotic prescribing between consultation mode for children. These findings should inform antimicrobial stewardship activities for health-care professionals and policy makers. Future research should examine differences in guideline-compliance between remote and face-to-face consultations to understand the factors driving antibiotic prescribing in different consultation modes. None.

A CLINICAL RISK PREDICTION TOOL FOR CARDIOVASCULAR EVENTS FOLLOWING RESPIRATORY INFECTIONS

Objective: The risk of cardiovascular (CVD) events increases for four weeks following a respiratory infection. This short-term increase in risk may be an opportunity for clinical intervention, providing one could predict the risk of infection-related CVD. We therefore sought to develop and validate a risk prediction model for use in patients with respiratory infections in primary care. Design and method: We used routinely collected data from two UK general practice databases, provided by Clinical Practice Research Datalink (CPRD). We used cohorts of patients without pre-existing CVD, starting from their first respiratory infection after the age of 40. We followed patients for 28 days. Our outcome was a composite of cerebral and cardiac events. We used logistic regression to develop risk prediction models in CPRD Aurum, and validated it in CPRD Gold. We selected predictors by asking clinicians to prioritize a list of potential predictors. This model uses ten variables. Results: The development cohort comprised 3.8 million patients with respiratory infections, and 7,081 CVD events in the following 28 days (0.18%). The validation cohort comprised 2.6 million patients with infections, and 6,868 events (0.26%). In external validation, we estimated a C statistic of 0.86. Using a 1% threshold of risk as a cut off, the positive predictive value was 3% (3.2 to 3.4%), with a negative predictive value close to one. Conclusions: It is possible to predict risk of primary infection-related CVD. Identifying patients at greatest risk of infection-related CVD opens up possibilities for further research applications.

Implementation of point-of-care testing of C-reactive protein concentrations to improve antibiotic targeting in respiratory illness in Vietnamese primary care: a pragmatic cluster-randomised controlled trial

In previous trials, point-of-care testing of C-reactive protein (CRP) concentrations safely reduced antibiotic use in non-severe acute respiratory infections in primary care. However, these trials were done in a research-oriented context with close support from research staff, which could have influenced prescribing practices. To better inform the potential for scaling up point-of-care testing of CRP in respiratory infections, we aimed to do a pragmatic trial of the intervention in a routine care setting. We did a pragmatic, cluster-randomised controlled trial at 48 commune health centres in Viet Nam between June 1, 2020, and May 12, 2021. Eligible centres served populations of more than 3000 people, handled 10-40 respiratory infections per week, had licensed prescribers on site, and maintained electronic patient databases. Centres were randomly allocated (1:1) to provide point-of-care CRP testing plus routine care or routine care only. Randomisation was stratified by district and by baseline prescription level (ie, the proportion of patients with suspected acute respiratory infections to whom antibiotics were prescribed in 2019). Eligible patients were aged 1-65 years and visiting the commune health centre for a suspected acute respiratory infection with at least one focal sign or symptom and symptoms lasting less than 7 days. The primary endpoint was the proportion of patients prescribed an antibiotic at first attendance in the intention-to-treat population. The per-protocol analysis included only people who underwent CRP testing. Secondary safety outcomes included time to resolution of symptoms and frequency of hospitalisation. This trial is registered with ClinicalTrials.gov, NCT03855215. 48 commune health centres were enrolled and randomly assigned, 24 to the intervention group (n=18 621 patients) and 24 to the control group (n=21 235). 17 345 (93·1%) patients in the intervention group were prescribed antibiotics, compared with 20 860 (98·2%) in the control group (adjusted relative risk 0·83 [95% CI 0·66-0·93]). Only 2606 (14%) of 18 621 patients in the intervention group underwent CRP testing and were included in the per-protocol analysis. When analyses were restricted to this population, larger reductions in prescribing were noted in the intervention group compared with the control group (adjusted relative risk 0·64 [95% CI 0·60-0·70]). Time to resolution of symptoms (hazard ratio 0·70 [95% CI 0·39-1·27]) and frequency of hospitalisation (nine in the intervention group vs 17 in the control group; adjusted relative risk 0·52 [95% CI 0·23-1·17]) did not differ between groups. Use of point-of-care CRP testing efficaciously reduced prescription of antibiotics in patients with non-severe acute respiratory infections in primary health care in Viet Nam without compromising patient recovery. The low uptake of CRP testing suggests that barriers to implementation and compliance need to be addressed before scale-up of the intervention. Australian Government, UK Government, and the Foundation for Innovative New Diagnostics.

Baseline Inappropriate Antibiotic Use in Primary Care Patients with Viral Respiratory Tract Infections with 2019 and 2020.

Context: Respiratory tract infection (RTI) is the leading cause of avoidable antimicrobial use in primary care. How the COVID-19 pandemic has impacted antibiotic prescribing practices across Canada is unknown. The purpose of this study was to examine rates of antibiotic prescribing for RTI in primary care during the first year of the pandemic (2020), compared to baseline in 2019. Study Design and Analysis: Cross sectional study. Dataset: Canadian Primary Care Sentinel Surveillance Network electronic medical record data from sites in British Columbia, Alberta, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland. Population Studied: Patients that met the case definition criteria for an RTI or a Urinary Tract Infection (UTI) in 2019, and in 2020. Outcome measures: We examined oral antibiotic prescribing for patients who were identified as having a primary care visit for RTI. The same analysis was repeated for urinary tract infection (UTI) as a tracer condition. The antibiotic use considered avoidable for RTI was defined by Choosing Wisely Canada. Results: A total of 1,692,876 patients with a valid birth year and sex and at least one visit to primary care in 2019 and 2020 were included. Patient visits for RTI decreased from 2.3% in 2019 to 1.6% in 2020 (p<.0001), as did patient visits for UTI (1.1% vs 0.7%, p<.0001). In 2019, 28.0% of patients visits for RTI were prescribed an antibiotic, and this proportion decreased significantly to 20.6% in 2020 (<.0001). The drop in antibiotic prescriptions for RTI was driven by a decrease in prescribing for common cold (13.6% vs. 11.3%, <.0001) and for acute bronchitis/asthma (15.2% vs. 7.3%, p<.0001). In comparison, antibiotic prescribing for visits related to UTI increased marginally between 2019 and 2020 (71.6% vs. 72.3%, p=0.007). Conclusions: A significant decrease in antibiotic prescribing for RTI across primary care was observed during the first year of the COVID-19 pandemic, likely related to the changes in epidemiology and care delivery models in primary care. CPCSSN can provide pan-Canadian surveillance of antibiotic prescribing practices in primary care that can be used for provider feedback and quality improvement.

Impact of Penicillin Allergy Labels on Children Treated for Outpatient Respiratory Infections.

Penicillin allergy is the most common antibiotic allergy, yet most children labeled as allergic tolerate penicillin. The impact of inaccurate penicillin allergy labels (PALs) on pediatric outpatients is unknown. The objective of this study was to compare outcomes between children with and without a PAL after treatment for outpatient respiratory tract infections (RTI). A retrospective, longitudinal birth cohort study was performed in children who received care in 90 pediatric primary care practices in Philadelphia and Houston metropolitan areas. Prescribing and clinical outcomes of children with a PAL at the time of an RTI were compared to non-allergic children, adjusting for potential confounders. Antibiotics were prescribed for 663,473 non-recurrent RTIs among 200,977 children. Children with a PAL (5% of cohort) were more likely than non-allergic children to receive broad-spectrum antibiotics (adjusted relative risk (aRR) 3.24, 95% CI 3.22-3.26) and second-line antibiotics (aRR 4.87, 95% CI 4.83, 4.89). Compared to non-allergic children receiving first-line antibiotics, children with a PAL were more likely to return with adverse drug events (aRR 1.28, 95% CI 1.18-1.39). There was no difference in treatment failure between groups (aRR 0.95, 95% CI 0.90-1.00). PALs lead to higher rates of broad-spectrum and second-line antibiotic prescribing in children treated for RTIs in primary care and contribute to unnecessary healthcare utilization through increased adverse events. Given the frequency of PALs, efforts to prevent inappropriate penicillin allergy labeling and promote de-labeling of existing inaccurate allergy labels may improve care of children treated for common bacterial infections.

Biomarkers as point-of-care tests to guide prescription of antibiotics in people with acute respiratory infections in primary care.

Biomarkers as point-of-care tests to guide prescription of antibiotics in people with acute respiratory infections in primary care.

The Impact of Point-of-Care Blood C-Reactive Protein Testing on Prescribing Antibiotics in Out-of-Hours Primary Care: A Mixed Methods Evaluation.

Improving prescribing antibiotics appropriately for respiratory infections in primary care is an antimicrobial stewardship priority. There is limited evidence to support interventions to reduce prescribing antibiotics in out-of-hours (OOH) primary care. Herein, we report a service innovation where point-of-care C-Reactive Protein (CRP) machines were introduced to three out-of-hours primary care clinical bases in England from August 2018–December 2019, which were compared with four control bases that did not have point-of-care CRP testing. We undertook a mixed-method evaluation, including a comparative interrupted time series analysis to compare monthly antibiotic prescription rates between bases with CRP machines and those without, an analysis of the number of and reasons for the tests performed, and qualitative interviews with clinicians. Antibiotic prescription rates declined during follow-up, but with no clear difference between the two groups of out-of-hours practices. A single base contributed 217 of the 248 CRP tests performed. Clinicians reported that the tests supported decision making and communication about not prescribing antibiotics, where having ‘objective’ numbers were helpful in navigating non-prescribing decisions and highlighted the challenges of training a fluctuant staff group and practical concerns about using the CRP machine. Service improvements to reduce prescribing antibiotics in out-of-hours primary care need to be developed with an understanding of the needs and context of this service.

Applying Theory of Planned Behavior to Understand Physicians' Shared Decision-Making With Patients With Acute Respiratory Infections in Primary Care: A Cross-Sectional Study.

Background: To understand the physicians’ shared decision-making behavior (SDM) with patients with acute respiratory infections (ARIs) based on the theory of planned behavior (TPB) and identify barriers to the implementation of SDM in primary care. Methods: A cross-sectional study of 617 primary care physicians was conducted in primary facilities in Hubei province, China from December 2019 to January 2020. A self-administered questionnaire based on TPB theory was applied for measuring the physicians’ SDM behavior with patients presenting with ARIs. Results: The proposed TPB model revealed that attitude and subjective norms predicted behavior intention, and behavior intention was one significant predictor of SDM behavior (p < 0.001). After controlling for physicians’ demographic characteristics, receiving training regarding antibiotics was significantly associated with physicians’ attitudes toward SDM, while educational level and gender were significantly associated with physicians’ intention of engaging in SDM (p < 0.05). Physicians’ perceptions of patients’ expectations and incapability of making decisions were the most frequently reported barriers to the implementation of SDM. Conclusion: The TPB theory provides insights for understanding physicians’ SDM behavior with patients with ARIs in primary care. Since attitudes, subjective norms, and behavior intention were demonstrated as significant predictors of SDM behavior, these may be a promising focus of SDM interventions based on TPB theory. The results of the TPB model and potential barriers of SDM behavior would help determine future directions for SDM training and educating the public.

Unneeded antibiotics for acute respiratory infections in primary care: stop as early as possible

In the field of antibiotic treatment, some old dogmas are falling in the light of recent evidence. Some examples include the need to use bactericidal drugs or their intravenous administration for the whole treatment course, and the durations of treatment for specific types of infections, among others [1–3]. The long recommended practice to complete the course of an antibiotic once prescribed [4] was also based on the dogma that not doing so would promote the development of resistance. Again, this dogma has also been seriously challenged, as present knowledge suggests that antibiotics facilitate resistance mostly by selecting resistant bacteria from the colonizing flora, that the longer the exposure the bigger collateral damage and that the development of resistance of the bacteria causing the infection being treated is relevant only for some pathogens and situations [5,6].

A cost-effectiveness and budget impact analysis of C-reactive protein point-of-care testing to guide antibiotic prescribing for acute respiratory tract infections in primary care settings in Ireland: a decision-analytic model.

Approximately 60% of antibiotics issued in primary care are for acute respiratory tract infections (RTIs), which are largely self-limiting and do not require antibiotics. Point-of-care testing (POCT) devices that measure C-reactive protein (CRP)-a biomarker for infection-can be used to guide prescribing decisions. We evaluated the cost-effectiveness and budget impact of a national CRP POCT program to guide antibiotic prescribing for acute RTIs in primary care in Ireland. We compared CRP POCT with and without enhanced communication skills training of general practitioners against usual care. A probabilistic decision tree was used to investigate cost-effectiveness from the perspective of the healthcare system. The model considered outcomes for the Irish population over a 5-year time horizon. Inputs were synthesized from published studies. Cost-effectiveness was estimated using an incremental cost per prescription avoided. CRP POCT with and without communication training were more costly but more effective than usual care over 5 years. CRP POCT alone was dominated, while the combined intervention had a cost per prescription avoided of €111 (95% CI: €45-243) versus usual care. The budget impact was costly over 5 years, but potential budget savings were available depending on the implementation scenario. The findings were largely robust to sensitivity analyses. CRP POCT reduces antibiotic prescribing, but increases healthcare costs. The most cost-effective program of CRP POCT includes enhanced communication skills training. Further research on the impact of CRP POCT beyond 5 years is warranted, as well as the potential impact on antimicrobial resistance.

Effects of patient education to reduce antibiotic prescribing rates for upper respiratory infections in primary care.

Antibiotic stewardship programs in primary care are necessary to reduce the estimated 30% of inappropriately written antibiotic prescriptions and reduce the spread of microbial resistance. Most programs focus on educating prescribers, but this intervention focused on educating patients. To develop and implement an antibiotic stewardship program in a primary care clinic to educate patients with upper respiratory infections (URIs) about antibiotic use and to assess the effectiveness of the program through antibiotic prescribing rates. Using materials from the Centers for Disease Control and Prevention (CDC) Be Antibiotics Aware program, posters on antibiotic use were placed in the exam rooms, graphic interchange formats (GIFs) and memes were displayed on exam room monitors, patient-provider discussions on antibiotic use were held, and written information for symptom management of URIs was provided. Retrospective chart reviews were conducted to assess antibiotic prescribing rates by four prescribers in a primary care clinic for September and October 2020 and compared to the same time period for 2019. The rate of total antibiotic prescriptions decreased by 12.6% (P = 0.044) and the rate of repeat consultation antibiotic prescriptions decreased by 12.2% (P = 0.007), whereas the rate of antibiotics prescribed at the time of the visit remained unchanged (P = 0.937). All providers had decreased rates of antibiotic prescribing after the intervention. Results of this study indicate that providing education about antibiotics to patients in need of treatment for URIs may reduce the rate of antibiotics prescribed in primary care; however, further research is warranted.

Effect of antibiotics in preventing hospitalizations from respiratory tract infections in children with Down syndrome.

Children with Down syndrome (DS) are at high risk of respiratory tract infections (RTIs) due to anatomical variations, comorbidities, and immune system immaturity. Evidence on interventions to reduce this risk is incomplete. This study aims to quantify the effect of antibiotics prescribed for RTIs in primary care on the subsequent risk of RTI-related hospitalization for children with DS versus controls. We conducted a retrospective cohort study of 992 children with DS and 4874 controls managed by UK National Health Service General Practitioners (GPs) and hospitals as identified in CALIBER (Clinical disease research using LInked Bespoke studies and Electronic health Records), 1997-2010. Univariate and multivariate logistic regression were undertaken. In children with DS, the prescription of antibiotics following an RTI-related GP consultation did not significantly reduce the risk of RTI-related hospitalization in the subsequent 28 days (risk with antibiotics, 1.8%; without, 2.5%; risk ratio, 0.699; 95% confidence interval, 0.471-1.036). Subgroup analyses showed a risk reduction only in infants with DS, after adjustment for covariates. There was no reduction in risk for controls, overall or across subgroups. In conclusion, while prescription of antibiotics following RTI-related GP consultations were effective for infants with DS in reducing subsequent RTI-related hospitalization, this was not the case for older children with DS. We would encourage further high-quality cohort and randomized controlled trials to interrogate this finding, and to examine the impact of antibiotics on other endpoints, including symptom duration.

Point-of-Care C-Reactive Protein Testing to Reduce Antibiotic Prescribing for Respiratory Tract Infections in Primary Care: Systematic Review and Meta-Analysis of Randomised Controlled Trials.

C-reactive protein (CRP) point-of-care testing (POCT) is increasingly being promoted to reduce diagnostic uncertainty and enhance antibiotic stewardship. In primary care, respiratory tract infections (RTIs) are the most common reason for inappropriate antibiotic prescribing, which is a major driver for antibiotic resistance. We systematically reviewed the available evidence on the impact of CRP-POCT on antibiotic prescribing for RTIs in primary care. Thirteen moderate to high-quality studies comprising 9844 participants met our inclusion criteria. Meta-analyses showed that CRP-POCT significantly reduced immediate antibiotic prescribing at the index consultation compared with usual care (RR 0.79, 95%CI 0.70 to 0.90, p = 0.0003, I2 = 76%) but not during 28-day (n = 7) follow-up. The immediate effect was sustained at 12 months (n = 1). In children, CRP-POCT reduced antibiotic prescribing when CRP (cut-off) guidance was provided (n = 2). Meta-analyses showed significantly higher rates of re-consultation within 30 days (n = 8, 1 significant). Clinical recovery, resolution of symptoms, and hospital admissions were not significantly different between CRP-POCT and usual care. CRP-POCT can reduce immediate antibiotic prescribing for RTIs in primary care (number needed to (NNT) for benefit = 8) at the expense of increased re-consultations (NNT for harm = 27). The increase in re-consultations and longer-term effects of CRP-POCT need further evaluation. Overall, the benefits of CRP-POCT outweigh the potential harms (NNTnet = 11).

Content and Mechanism of Action of National Antimicrobial Stewardship Interventions on Management of Respiratory Tract Infections in Primary and Community Care.

A major modifiable factor contributing to antimicrobial resistance (AMR) is inappropriate use and overuse of antimicrobials, such as antibiotics. This study aimed to describe the content and mechanism of action of antimicrobial stewardship (AMS) interventions to improve appropriate antibiotic use for respiratory tract infections (RTI) in primary and community care. This study also aimed to describe who these interventions were aimed at and the specific behaviors targeted for change. Evidence-based guidelines, peer-review publications, and infection experts were consulted to identify behaviors relevant to AMS for RTI in primary care and interventions to target these behaviors. Behavior change tools were used to describe the content of interventions. Theoretical frameworks were used to describe mechanisms of action. A total of 32 behaviors targeting six different groups were identified (patients; prescribers; community pharmacists; providers; commissioners; providers and commissioners). Thirty-nine interventions targeting the behaviors were identified (patients = 15, prescribers = 22, community pharmacy staff = 8, providers = 18, and commissioners = 18). Interventions targeted a mean of 5.8 behaviors (range 1–27). Influences on behavior most frequently targeted by interventions were psychological capability (knowledge and skills); reflective motivation (beliefs about consequences, intentions, social/professional role and identity); and physical opportunity (environmental context and resources). Interventions were most commonly characterized as achieving change by training, enabling, or educating and were delivered mainly through guidelines, service provision, and communications & marketing. Interventions included a mean of four Behavior Change Techniques (BCTs) (range 1–14). We identified little intervention content targeting automatic motivation and social opportunity influences on behavior. The majority of interventions focussed on education and training, which target knowledge and skills though the provision of instructions on how to perform a behavior and information about health consequences. Interventions could be refined with the inclusion of relevant BCTs, such as goal-setting and action planning (identified in only a few interventions), to translate instruction on how to perform a behavior into action. This study provides a platform to refine content and plan evaluation of antimicrobial stewardship interventions.

PMD18 A COST-EFFECTIVENESS AND BUDGET IMPACT ANALYSIS OF C-REACTIVE PROTEIN POINT-OF-CARE TESTING TO GUIDE ANTIBIOTIC PRESCRIBING FOR RESPIRATORY TRACT INFECTIONS IN PRIMARY CARE SETTINGS IN IRELAND

The problem of antimicrobial resistance (AMR) is substantial, exacerbated by excessive and inappropriate antibiotic prescribing. Approximately 60% of antibiotics issued in primary care are for respiratory tract infections (RTIs), which are mostly self-limiting and do not require antibiotics. Point-of-care testing (POCT) devices that measure C-reactive protein (CRP) – a biomarker for infection – can be used to guide and ultimately reduce prescribing. We performed a cost-effectiveness and budget impact analysis of a national programme of CRP POCT to improve antimicrobial stewardship for RTIs in primary care in Ireland. We compared CRP POCT – with and without communication skills training of General Practitioners – against usual care. We performed a network meta-analysis to establish clinical effectiveness and developed a probabilistic decision tree to investigate cost-effectiveness and budget impact from the perspective of the healthcare system. The model considered outcomes for the Irish population over five years. Inputs were synthesised from published studies. Cost-effectiveness was estimated using cost-per-prescription avoided. CRP POCT with/out communication training was more costly and effective than usual care, although some uncertainty in long-term effectiveness was observed. CRP POCT without communication training was dominated, while the combined intervention had a cost-per-prescription avoided of €111 (95% CI €45 to €243) versus usual care. The budget impact was costly over five years, estimated at €4.5 million (95% CI €-22.8 to €34.8 million) and €23.9 million (95% CI €5.1 to €43.8 million) with/out communication training. The findings were robust to sensitivity analyses. CRP POCT is most cost-effective when combined with communication training. However, the budget impact is costly, and there’s limited evidence that the effect is sustained in the long-term, suggesting the device may not reflect value for money or sufficiently address the growing problem of AMR. CRP POCT should be considered alongside a suite of interventions aimed at improving antimicrobial stewardship.