Long-term impact of an intervention on rapid antigen detection tests in acute pharyngitis.

OBJECTIVE: This study was aimed at evaluating the appropriateness of use and interpretation of rapid antigen detection testing (RADT) and antibiotic prescribing for acute pharyngitis six years after a multifaceted intervention. DESIGN: Before-and-after audit-based study. LOCATION: Primary care centres in eight autonomous Communities. PARTICIPANTS: General practitioners (GP) who had participated in the HAPPY AUDIT intervention study in 2008 and 2009 were invited to participate in a third audit-based study six years later (2015). METHOD: RADTs were provided to the participating practices and the GPs were requested to consecutively register all adults with acute pharyngitis. A registration form specifically designed for this study was used. RESULTS: A total of 121 GPs out of the 210 who participated in the first two audits agreed to participate in the third audit (57.6%). They registered 3394 episodes of pharyngitis in the three registrations. RADTs were used in 51.7% of all the cases immediately after the intervention, and in 49.4% six years later. Antibiotics were prescribed in 21.3% and 36.1%, respectively (P<.001), mainly when tonsillar exudates were present, and in 5.3% and 19.2% of those with negative RADT results (P<.001). On adjustment for covariables, compared to the antibiotic prescription observed just after the intervention, significantly more antibiotics were prescribed six years later (odds ratio: 2.24, 95% confidence interval: 1.73-2.89). CONCLUSIONS: This study shows that that the long-term impact of a multifaceted intervention, focusing on the use and interpretation of RADT in patients with acute pharyngitis, is reducing.

[Twenty-five myths in infectious diseases in primary care associated with overdiagnosis and overtreatment]. / Veinticinco mitos en enfermedades infecciosas en atención primaria que se asocian con sobrediagnóstico y sobretratamiento.

Overdiagnosis and overprescribing is common in current clinical practice of infectious diseases in primary care. On the basis of studies published in the medical literature we identify my means of a non-systematic review a total of 25 myths associated with the diagnosis and treatment and present the literature pertaining to each myth. These myths result in extraneous testing (overdiagnosis) and excessive antimicrobial treatment (overtreatment). Most of these myths are ingrained among general practitioners in our country. Not only should these myths be debunked from our clinical practice, but they should also be reversed, and we encourage our readers to critically appraise their practice when it comes down to the misconceptions treated in this manuscript. We attempt to give guidance to clinicians facing these frequent clinical scenarios.

[Antibiotic susceptibility of Staphylococcus aureus and Streptococcus pneumoniae in healthy carrier individuals in primary care in Barcelona area]. / Sensibilidad antibiótica de Staphylococcus aureus y Streptococcus pneumoniae en personas portadoras nasales sanas en atención primaria en el área de Barcelona.

INTRODUCTION: The information available on antibiotic resistance patterns are generally based on specimens from hospitalised individuals. This study was aimed at evaluating the antibiotic resistance rate of nasal carriage strains of Staphylococcus aureus and Streptococcus pneumoniae in healthy individuals, in accordance with age and gender, attended in Primary Care Centres (PCC). DESIGN: Cross-sectional study. SETTING: Seven PCC in the Barcelona area. PARTICIPANTS: Healthy nasal carriers aged 4years or more who did not present with any sign of infectious disease, and had not taken any antibiotic or had been hospitalised in the previous 3months. MAIN MEASUREMENTS: A total of 3,969 nasal swabs valid for identification were collected between 2010 and 2011 and were sent to one central microbiological laboratory for isolation of both pathogens. Resistance to common antibiotics was determined on the basis of the current European Committee on Antimicrobial Susceptibility Testing guidelines on cut-off points. RESULTS: The prevalence of methicillin-resistant S.aureus was 1.3% (95%CI: 0.5-2.1%), with resistance rates of 87.1% to phenoxymethylpenicillin and 11.6% to azithromycin, with no significant differences with age and gender. A total of 2.4% (95CI%: 0.1-4.7%) of the pneumococcal strains were highly resistant to both phenoxymethylpenicillin and macrolides, whereas the highest resistance rates were to cefaclor (53.3%), followed by tetracycline (20%) and cefuroxime (12.1%). CONCLUSIONS: These pathogens have lower resistance rates in the community than in the hospital setting. Primary Care physicians must be more aware of the current antimicrobial resistance, in order to ensure prudent use of antibiotics.

Estimated saving of antibiotics in pharyngitis and lower respiratory tract infections if general practitioners used rapid tests and followed guidelines.

INTRODUCTION: General practitioners (GP) in Spain do not have access to rapid tests and adherence to guidelines is usually suboptimal. The aim of the study is to evaluate the estimated number of antibiotics that could have been saved if GPs had appropriately used these tests and had followed the guidelines. DESIGN: Observational study. SETTING: Primary care centres from eight Autonomous Communities in Spain. PARTICIPANTS: GPs who had not participated in previous studies on rational use of antibiotics. INTERVENTION: GPs registered all the cases of pharyngitis and lower respiratory tract infections (LRTI) during 15 working days in 2015, by means of a 47-item audit. MAIN MEASUREMENTS: Actual GPs' antibiotic prescription and estimated number of antibiotics that could have been saved according to recent guidelines. RESULTS: A total of 126 GPs registered 1012 episodes of pharyngitis and 1928 LRTIs. Antibiotics were given or patients were referred in 497 patients with pharyngitis (49.1%) and 963 patients with LRTI (49.9%). If GPs had appropriately used rapid antigen detection tests and C-reactive protein tests and had strictly followed current guidelines, antibiotics would have been given to 7.6% and 15.1%, respectively, with an estimated saving of 420 antibiotics in patients with sore throat (estimated saving of 84.5%; 95% CI: 81.1-87.4%) and 672 antibiotics in LRTIs (estimated saving of 69.8%,95% CI: 67.1-72.5%). CONCLUSIONS: GP adherence to guidelines and a correct introduction of rapid tests in clinical practice in Spain could result in a considerable saving of unnecessary prescription of antibiotics in pharyngitis and LRTIs.

[Recommendations for the use of rapid diagnosis techniques in respiratory infections in primary care]. / Recomendaciones de utilización de técnicas de diagnóstico rápido en infecciones respiratorias en atención primaria.

Respiratory tract infections rank first as causes of adult and paediatric infectious morbidity in primary care in Spain. These infections are usually self-limiting and are mainly caused by viruses. However, a high percentage of unnecessary antibiotic prescription is reported. Point-of-care tests are biomedical tests, which can be used near the patient, without interference of a laboratory. The use of these tests, many of which have been recently developed, is rapidly increasing in general practice. Notwithstanding, we must mull over whether they always contribute to an effective and high-quality diagnostic process by primary care clinicians. We present a set of criteria that can be used by clinicians and discuss the pros and cons of the instruments available for the management of respiratory tract infections and how to use them appropriately.

[Recommendations for management of acute pharyngitis in adults]. / Recomendaciones para el manejo de la faringoamigdalitis aguda del adulto.

Acute pharyngitis in adults is one of the most common infectious diseases seen in general practitioners' consultations. Viral aetiology is the most common. Among bacterial causes, the main agent is Streptococcus pyogenes or group A ß-haemolytic streptococcus (GABHS), which causes 5%-30% of the episodes. In the diagnostic process, clinical assessment scales can help clinicians to better predict suspected bacterial aetiology by selecting patients who should undergo a rapid antigen detection test. If these techniques are not performed, an overdiagnosis of streptococcal pharyngitis often occurs, resulting in unnecessary prescriptions of antibiotics, most of which are broad spectrum. Consequently, management algorithms that include the use of predictive clinical rules and rapid tests have been set up. The aim of the treatment is speeding up symptom resolution, reducing the contagious time span and preventing local suppurative and non-suppurative complications. Penicillin and amoxicillin are the antibiotics of choice for the treatment of pharyngitis. The association of amoxicillin and clavulanate is not indicated as the initial treatment of acute infection. Neither are macrolides indicated as first-line therapy; they should be reserved for patients allergic to penicillin. The appropriate diagnosis of bacterial pharyngitis and proper use of antibiotics based on the scientific evidence available are crucial. Using management algorithms can be helpful in identifying and screening the cases that do not require antibiotic therapy.

[Recommendations for management of acute pharyngitis in adults]. / Recomendaciones para el manejo de la faringoamigdalitis aguda del adulto.

Acute pharyngitis in adults is one of the most common infectious diseases seen in general practitioners' consultations. Viral aetiology is the most common. Among bacterial causes, the main agent is Streptococcus pyogenes or group A ß-haemolytic streptococcus (GABHS), which causes 5%-30% of the episodes. In the diagnostic process, clinical assessment scales can help clinicians to better predict suspected bacterial aetiology by selecting patients who should undergo a rapid antigen detection test. If these techniques are not performed, an overdiagnosis of streptococcal pharyngitis often occurs, resulting in unnecessary prescriptions of antibiotics, most of which are broad spectrum. Consequently, management algorithms that include the use of predictive clinical rules and rapid tests have been set up. The aim of the treatment is speeding up symptom resolution, reducing the contagious time span and preventing local suppurative and non-suppurative complications. Penicillin and amoxicillin are the antibiotics of choice for the treatment of pharyngitis. The association of amoxicillin and clavulanate is not indicated as the initial treatment of acute infection. Neither are macrolides indicated as first-line therapy; they should be reserved for patients allergic to penicillin. The appropriate diagnosis of bacterial pharyngitis and proper use of antibiotics based on the scientific evidence available are crucial. Using management algorithms can be helpful in identifying and screening the cases that do not require antibiotic therapy.

Effectiveness of two types of intervention on antibiotic prescribing in respiratory tract infections in Primary Care in Spain. Happy Audit Study.

OBJECTIVE: To evaluate the effectiveness of two types of intervention in reducing antibiotic prescribing in respiratory tract infections (RTI). DESIGN: Before-after audit-based study. SETTING: Primary Care centres in Spain. PARTICIPANTS: General practitioners (GPs) registered all patients with RTIs for 15 days in winter 2008 (pre-intervention), and again in winter 2009 (post-intervention). INTERVENTIONS: Intervention activities included meetings, with the presentation and discussion of the results, and several training meetings on RTI guidelines, information brochures for patients, workshops on point-of-care tests - rapid antigen detection tests and C-reactive protein rapid test - and provision of these tests in the clinic. All GPs, with the exception of those in Catalonia, made up the full intervention group (FIG); conversely, Catalan doctors underwent the same intervention, except for the workshop on rapid tests (partial intervention group, PIG). Multilevel logistic regression was performed taking the prescription of antibiotics as the dependent variable. RESULTS: Out of a total of 309 GPs involved in the first register, 281 completed the intervention and the second register (90.9%), of which 210 were assigned to the FIG, and 71 to the PIG. The odds ratio of antibiotic prescribing after the intervention was 0.99 (95% CI: 0.89-1.10) among GPs assigned to PIG, and 0.50 (95% CI: 0.44-0.57, p<0.001) among those who were allocated to FIG. The reduction in antibiotic prescribing in FIG was more marked in flu infection, common cold, acute pharyngitis, acute tonsillitis, and acute bronchitis. CONCLUSIONS: Active participation of GPs with the performance of point-of-care tests in the clinic is accompanied by a drastic reduction of antibiotic use in RTIs, primarily in infections considered as mainly viral.

[Lifestyles of subjects who take drugs for two or more cardiovascular risk factors. TAR-RISC Study]. / Estilos de vida de los sujetos que toman fármacos para dos o más factores de riesgo cardiovascular. Estudio TAR-RISC.

OBJECTIVE: To describe the basic characteristics and lifestyles of the population of a Health Region, on medication for two or more cardiovascular risk factors. DESIGN: Cross-sectional descriptive study. SETTING: Tarragona Primary Care. PARTICIPANTS: The subjects, less than 65 years-old, were identified by the dispensing data of hypertensive, glucose-lowering and lipid-lowering pharmaceutical drugs. MAIN MEASUREMENTS AND RESULTS: Specific structured questionnaires were designed for each drugs group, and the information was gathered by telephone. Age, sex, sedentarism, alcohol and tobacco habits, diet and body mass index were analysed. A total of 1201 patients, with a mean age of 58.9±7.6 years, were interviewed. There were 54.2% males. A total of 636 (53.0%) subjects took anti-hypertensive and cholesterol lowering drugs, 212 (17.7%) anti-hypertensive and glucose lowering drugs, and 128 (10.8%) cholesterol lowering and glucose lowering drugs, and 225 (18.7%) patients took drugs from the three groups. There were 19.2% active smokers, 5.7% stated excessive alcohol consumption, 266 (22.2%) stated that they did not follow any diet, and 15% were sedentary or did a minimum of physical activity. The mean body mass index was 29.9±4.9 kg/m(2), being highest among the subjects who took anti-hypertensive and glucose lowering drugs (P<0.001), and 44.2% were obese. CONCLUSIONS: Approximately one fifth of the subjects who took at least 2 pharmacological groups was an active smoker, one quarter of the total did not follow a diet, half were obese and two-thirds did little or no physical activity. These results show low compliance to hygienic-dietetic measures by patients with an increased cardiovascular risk.

[Prudent use of antibiotics and suggestions for improvement in the primary health care system]. / Uso prudente de antibióticos y propuestas de mejora desde la atención primaria.

A third of all primary care (PC) visits are due to infectious diseases and more than half of these are due to respiratory tract infections. In most cases, data from the clinical history and physical examinations do not help discern whether the aetiology of the infection is bacterial or not and, when in doubt, the family doctor tends to prescribe antibiotics despite the marginal effect that these drugs have on most respiratory infections. Moreover, PC physicians overestimate the proportion of patients with infections who expect to receive antibiotics and according to the scientific literature this perception is often wrong. In addition, patient expectations are often based on false assumptions or experiences from previous visits. Various strategies have proven useful in promoting more prudent use of antibiotics in PC. Delayed prescription of antibiotics is recommended mainly in non-serious infections of suspected viral aetiology in patients who express a preference for antibiotics. Improving communication skills has also proven useful in reducing prescriptions of antibiotics as has the use of rapid diagnostic tests in the doctor's office, mainly rapid antigen techniques for diagnosis of strep throat and determination of C-reactive protein. The results of the Happy Audit study recently conducted in Spain confirm these findings.

[Infectious disease in primary care: 1-year prospective study]. / Enfermedad infecciosa en atención primaria: estudio prospectivo efectuado durante todo un año.

INTRODUCTION: The frequency and seasonal variability of infectious diseases was determined in patients consulting in the primary care setting. METHODS: In 2007, an observational, prospective study was conducted, including all persons older than 14 with infectious diseases consulting at 2 primary care practices. All infectious diseases identified over the 1-year period were recorded using a template with the following variables: age and sex, present diagnosis, prescription of an antibiotic or not, diagnostic tests used, and referral to a specialist or not. RESULTS: Out of 12,676 patients attended over the year, 4214 presented at least one infectious disease (33.2%). A total of 4353 infections were observed, in patients with a mean age of 44.1 years (SD: 12.1). The most common infectious diseases were respiratory infections (2196, 50.4%), followed by skin infections (586, 13.5%) and urinary tract infections (452, 10.4%). The incidence of infections ranged from 39.8% in January to 30.7% in August. The greatest seasonal variation was related to respiratory tract infections, which were more frequent in winter (69.2%) and less common in summer (25.1%), whereas skin infections accounted for 22.6% of all infectious diseases in summer. A total of 962 patients had self-administered antimicrobial agents (22.8%). In respiratory tract infections, the percentage of antimicrobials self-administered by patients was greater than the percentage of prescriptions by physicians (22.2% vs. 14.7%, respectively). CONCLUSION: Infectious diseases account for one third of the visits to a general practitioner and half of these cases correspond to respiratory tract infections. There is a seasonal variation in infections, mainly for respiratory infections.