Effect of methenamine hippurate shortage on antibiotic prescribing for urinary tract infections in Norway-an interrupted time series analysis.

BACKGROUND: Despite a lack of conclusive evidence of effect, methenamine hippurate is widely prescribed as preventive treatment for recurrent urinary tract infections (UTIs) in Norway. A national discontinuation of methenamine hippurate treatment due to a 4-month drug shortage in 2019 presented an opportunity to evaluate its preventive effect on UTIs among regular users. OBJECTIVE: To estimate the impact of the methenamine hippurate drug shortage on prescription frequency of UTI antibiotics. METHODS: Data from The Norwegian Prescription Database was analysed using an interrupted time series design. The time series consisted of 56 time periods of 14 days. The model included two naturally occurring interruptions: (i) the methenamine hippurate drug shortage, and (ii) reintroduction of the drug. The study population were 18 345 women ≥50 years receiving ≥2 prescriptions of methenamine hippurate in the study period before the shortage. Main outcome measure was number of prescriptions of UTI antibiotics per 1000 methenamine hippurate users. Prescription rates of antibiotics for respiratory tract infections were analysed to assess external events affecting antibiotic prescribing patterns. RESULTS: We found a significant increase of 2.41 prescriptions per 1000 methenamine hippurate users per 14-day period during the drug shortage (95%CI 1.39, 3.43, P < 0.001), followed by a significant reduction of -2.64 prescriptions after reintroduction (95%CI -3.66, -1.63, P < 0.001). CONCLUSIONS: During the methenamine hippurate drug shortage, we found a significant increase in prescribing trend for UTI antibiotics followed by a significant decrease in prescribing trend after reintroduction. This change in trend seems to reflect a preventive effect of the drug on recurrent UTIs.

Antibiotic use for airway infections in Norwegian children-A national register-based study.

AIM: Respiratory tract infections (RTIs) are major contributors to childhood antibiotic use. We aimed to investigate geographical and temporal trends in the prescription of antibiotics and consultations for RTIs in children <18 years living in Norway from 2010 to 2017. METHODS: In a nationwide observational study, we analysed antibiotic prescriptions from the Norwegian Prescription Database and reimbursed contacts from primary care physicians. We limited the study to airway antibiotics and diagnostic codes indicating RTIs. RESULTS: Antibiotic prescriptions due to an RTI varied from 75 to 134 per 1000 consultation due to RTI across counties in Norway (relative risk 1.79, 95% CI 1.68-1.90 for highest compared to lowest). The use of health care varied from 414 to 585 consultations for RTI per 1000 inhabitant/year (relative risk 1.43, 95% CI 1.41-1.44 for highest compared to lowest). From 2010 to 2017, we observed a 21% reduction in antibiotic prescriptions per RTI consultation and of 6% for the number of consultations for an RTI. At the county level, the use of health care was positively associated with the proportion of RTIs that resulted in antibiotic prescription. CONCLUSION: We found a reduction in doctors' antibiotic prescription and the use of health care for RTIs, and a variation across counties.

Quality improvement work in general practice; a Norwegian focus group study.

BACKGROUND: Quality improvement work is an essential feature of healthcare services, including general practice. In this study, we aimed to gain more knowledge regarding general practitioners' (GPs) motivation for such work in their practices, as well as what kind of measures were considered motivating and feasible. MATERIALS AND METHODS: We conducted five focus group interviews among Norwegian GPs between November 2021 and November 2022. We included 21 GPs of varying age, gender, experience, and geographic situation. The data were transcribed verbatim and analysed by Systematic Text Condensation, a thematic cross-case analysis. RESULTS: Many GPs had a diverse and imprecise understanding of the term quality improvement, and sound routines in everyday practice were often given as examples of quality improvement measures. There was a universal attitude that quality improvement initiatives should be close to practice, professionally relevant, and sufficiently small to be manageable. The availability of professional communities, either in the GP practices or in continuous medical education groups, was important for motivation. The role of nurses and health secretaries was highlighted as essential to achieve change. Participants commonly described negative reactions to programs that were imposed by external actors without regard for the GPs' perceived needs. CONCLUSION: GPs were motivated for quality improvement measures provided feasibility within the framework of general practice. Well-functioning professional communities, including involvement of nurses and health-secretaries, were emphasised as requisite for quality improvement. Small scale quality improvement programs suited for the needs of general practice were well received and should be further developed.

Local management of the COVID-19 pandemic in Norway: a longitudinal interview study of municipality chief medical officers.

OBJECTIVE: To explore the experiences and views of Norwegian Municipality Chief Medical Officers (MCMOs) on preparedness, collaboration, and organization during the COVID-19 pandemic to gain insight into local crisis management of value for future pandemic responses. DESIGN: Longitudinal qualitative interview study. We conducted semi-structured digital interviews with nine MCMOs working in different municipalities in Norway from September to December 2020. Five MCMOs were re-interviewed from January to April 2021. We used thematic analysis to analyze the data. RESULTS: Through the analysis, three major themes were identified in the material; 1) The view of preparedness changed from being low-priority and dormant to the desire to strengthen preparedness as a permanent measure; 2) The nature of the pandemic forced a change in internal and external communication and collaboration for the MCMOs towards direct dialogue, teamwork and digital networking; 3) The pandemic changed the role and position of the MCMO within the municipal organization. Although most MCMOs were given a leading role in the municipal pandemic response, some MCMOs experienced that they were not positioned to fully exercise their intended role. In our material, de-authorization of the MCMO role seemed to coincide with the increasing size and organizational complexity of the municipality. CONCLUSIONS: The Norwegian pandemic response and outcome have been regarded as successful internationally. Although the MCMOs managed to implement flexible and quick responses facilitated by teamwork, dialogue, and joint sensemaking, they also identified several challenges and shortcomings of the Norwegian pandemic preparedness requiring organizational and financial changes to sustain future health system resilience.

The Norwegian Infection Control Act gave comprehensive responsibility and authority for local COVID-19 pandemic management to the municipalities and the Municipality Chief Medical Officers (MCMOs).The MCMOs highlighted several challenges and shortcomings of the municipal crisis preparedness, of which lack of detailed organizational plans was the most prominent.Teamwork, digital networking and collective sensemaking seemed to enhance pandemic collaboration and resilience within and across municipalities.Most MCMOs gained a leading role at a higher organizational level within the municipality through the COVID-19 pandemic.To strengthen future crisis management, arrangements must be made, both organizationally and financially, for preparedness to remain on the agenda even between epidemics and pandemics.

Hospitalizations and severe complications following acute sinusitis in general practice: a registry-based cohort study.

OBJECTIVES: To investigate complication rates of acute sinusitis in general practice, and whether antibiotic prescribing had an impact on complication rate. METHODS: All adult patients diagnosed with sinusitis in Norwegian general practice between 1 July 2012 and 30 June 2019 were included. GP consultation data from the Norwegian Control and Payment for Health Reimbursements Database were linked with antibiotic prescriptions (Norwegian Prescription Database) and hospital admissions (Norwegian Patient Registry). Main outcomes were sinusitis-related hospitalizations and severe complications within 30 days. Logistic regression was used to estimate associations between antibiotic prescriptions, prespecified risk factors, individual GP prescribing quintile, and outcomes. RESULTS: A total of 711 069 episodes of acute sinusitis in 415 781 patients were identified. During the study period, both annual episode rate (from 30.2 to 21.2 per 1000 inhabitants) and antibiotic prescription rate (63.3% to 46.5%; P < 0.001) decreased. Yearly hospitalization rate was stable at 10.0 cases per 10 000 sinusitis episodes and the corresponding rate of severe complications was 3.2, with no yearly change (P = 0.765). Antibiotic prescribing was associated with increased risk of hospitalization [adjusted OR 1.8 (95% CI 1.5-2.1)] but not with severe complications. Individual GP prescribing quintile was not associated with any of the outcomes, whereas risk factors such as previous drug abuse, or head injury, skull surgery or malformations, and being immunocompromised were significantly associated with increased risk of both outcomes. CONCLUSIONS: Severe complications of acute sinusitis were rare and no protective effect of high prescribing practice among GPs was found. Recommendations to further reduce antibiotic prescribing are generally encouraged, except for high-risk groups.

Effect of an educational intervention for telephone triage nurses on out-of-hours attendance: a pragmatic randomized controlled study.

BACKGROUND: Telephone triage has been established in many countries as a response to the challenge of non-urgent use of out-of-hours primary care services. However, limited evidence is available regarding the effect of training interventions on clinicians' telephone consultation skills and patient outcomes. METHODS: This was a pragmatic randomized controlled educational intervention for telephone triage nurses in 59 Norwegian out-of-hours general practitioners' (GPs) cooperatives, serving 59% of the Norwegian population. Computer-generated randomization was performed at the level of out-of-hours GP cooperatives, stratified by the population size. Thirty-two out-of-hours GP cooperatives were randomized to intervention. One cooperative did not accept the invitation to participate in the educational programme, leaving 31 cooperatives in the intervention group. The intervention comprised a 90-minute e-learning course and 90-minute group discussion about respiratory tract infections (RTIs), telephone communication skills and local practices. We aimed to assess the effect of the intervention on out-of-hours attendance and describe the distribution of RTIs between out-of-hours GP cooperatives and list-holding GPs. The outcome was the difference in the number of doctor's consultations per 1000 inhabitants between the intervention and control groups during the winter months before and after the intervention. A negative binomial regression model was used for the statistical analyses. The model was adjusted for the number of nurses who had participated in the e-learning course, the population size and patients' age groups, with the out-of-hours GP cooperatives defined as clusters. RESULTS: The regression showed that the intervention did not change the number of consultations for RTIs between the two groups of out-of-hours GP cooperatives (incidence rate ratio 0.99, 95% confidence interval 0.91-1.07). The winter season's out-of-hours patient population was younger and had a higher proportion of RTIs than the patient population in the list-holding GP offices. Laryngitis, sore throat, and pneumonia were the most common diagnoses during the out-of-hours primary care service. CONCLUSIONS: The intervention did not influence the out-of-hours attendance. This finding may be due to the intervention's limited scope and the intention-to-treat design. Changing a population's out-of-hours attendance is complicated and needs to be targeted at several organizational levels.

Decisions regarding antibiotic prescribing for acute sinusitis in Norwegian general practice. A qualitative focus group study.

BACKGROUND: Acute sinusitis is a frequent reason for primary care visits. Most patients recover within two weeks without antibiotic treatment. Despite this, about 50% of patients with acute sinusitis in Norwegian general practice are still prescribed antibiotics. We do not know the reason behind this discrepancy. AIM: To explore the clinical decision-making process and reasons for treatment with antibiotics for acute sinusitis among Norwegian general practitioners (GPs). METHODS: Five focus group interviews were conducted (N = 25) in different parts of Norway, including GPs of various age, gender, and experience. The interviews were analysed using Systematic Text Condensation. RESULTS: The results showed a very diverse management of acute sinusitis among GPs, with decisions regarding antibiotics not always aligning with guideline recommendations. Many of the GPs did not agree with the Norwegian guidelines for antibiotics and chose something other than phenoxymethylpenicillin as their first choice. Clinical predictors emphasized in decision-making were pain complaints and patient exhaustion. Pragmatic factors such as weekday, travel plans, or a full waiting room could also influence the decision. CONCLUSION: GPs found it difficult to identify when patients would benefit from antibiotic treatment for acute sinusitis, and different strategies were used to make prescribing decisions. For several GPs the degree of pain was one of the decisive reasons for antibiotic prescribing, however the guidelines for antibiotics do not give sufficient advice regarding pain treatment. These results suggest a need for revaluation of guideline contents and the way they are communicated to GPs.

We know that antibiotics are often overused in the treatment of acute sinusitis, but there is lack of knowledge about the reasons behind GPs decision to prescribe them.There were considerable variations in clinical decision-making regarding the treatment of acute sinusitis among Norwegian GPs.The patients' pain level, as well as pragmatic factors, were important deciding factors in the prescription of antibiotics.Guidelines for treatment regarding acute sinusitis may include more emphasis on pain management.

Symptoms, symptom severity, and contact with primary health care among nonhospitalized COVID-19 patients: a Norwegian web-based survey.

OBJECTIVE: Dependent on clinical setting, geography and timing during the pandemic, variable symptoms of COVID-19 have been reported. Our aim was to describe self-reported symptom intensity and contact with primary health care among nonhospitalized COVID-19 patients. DESIGN: Web-based survey. SETTING: Norway between March 2020 and July 2021. SUBJECTS: Adults in home isolation. MAIN OUTCOME MEASURES: Participants reported possible COVID-19 symptoms, duration of symptoms, score of symptom severity (Likert scale 0-3), risk factors, comorbidity, and questions regarding follow-up and information from primary health care. RESULTS: Of 477 participants, 379 (79%) had PCR-confirmed COVID-19, 324 (68%) were females, and 90% were younger than 60 years. Most common symptoms were "fatigue and/or muscle ache" (80%), nasal symptoms (79%), and headache (73%). The mean severity of symptoms was generally low. Symptoms with the highest mean scores were "fatigue and/or muscle ache" (1.51, SD 1.02) and headache (1.27 (SD 1.00). Mean scores for severity ranged from 0.28 (nausea) to 1.51 (fatigue and/or muscle ache). Women reported higher symptom scores than men. For "affected sense of smell and/or taste", patients either reported a high symptom score (24%) or no affliction at all (49%). A third of the participants (32%) were followed-up by primary care health personnel, and almost 40% had sought or received information about COVID-19 from general practitioners. CONCLUSION: The mean severity of symptoms among nonhospitalized adult COVID-19 patients was generally low. We found large variations in the occurrence and severity of symptoms between patients.

Dependent on clinical setting, geography and timing during the pandemic, variable symptoms, and follow-up of COVID-19 have been reported.The most common symptoms were fatigue and/or muscle ache, nasal symptoms, and headache, and the overall mean symptom score was low.The symptom where most patients were severely afflicted was a reduced sense of smell and/or taste.Patients with a higher symptom severity were more likely to receive information about COVID-19 from their GP.

Experiences and management strategies of Norwegian GPs during the COVID-19 pandemic: a longitudinal interview study.

OBJECTIVE: When the COVID-19 pandemic reached Norway, primary health care had to reorganize to ensure safe patient treatment and maintain infection control. General practitioners (GPs) are key health care providers in the municipalities. Our aim was to explore the experiences and management strategies of Norwegian GPs during the COVID-19 pandemic - over time, and in the context of a sudden organizational change. DESIGN: Longitudinal qualitative interview study with two interview rounds. The first round of interviews was conducted from September-December 2020, the second round from January-April 2021. In the first interview round, we performed eight semi-structured interviews with GPs from eight municipalities in Norway. In the second round, five of the GPs were re-interviewed. Consecutive interviews were performed 2-4 months apart. To analyze the data, we used thematic analysis. RESULTS: The COVID-19 pandemic required GPs to balance several concerns, such as continuity of care and their own professional efforts. Several GPs experienced challenges in the collaboration with the municipality and in relation to defining their own professional position. Guided by The Norwegian Association of General practitioners, The Norwegian College of General Practice and collegial support, they found viable solutions and ended up with a feeling of having adapted to a new normal. CONCLUSIONS: Although our study demonstrates that the GPs adapted to the changing conditions, the current municipal health care models are not ideal. There is a need for clarification of responsibilities between GPs and the municipality to facilitate a more coordinated future pandemic response.Key PointsFacing the COVID-19 pandemic, the primary health care service in Norway had to reorganize to ensure safe patient treatment and maintain infection control.Several GPs experienced challenges in collaboration with the municipalities.There is a need for clarification of responsibilities between GPs and the municipality.

Decisions on antibiotic prescribing for suspected urinary tract infections in frail older adults: a qualitative study in four European countries.

BACKGROUND: a suspected urinary tract infection (UTI) is the most common reason to prescribe antibiotics in a frail older patient. Frequently, antibiotics are prescribed unnecessarily. To increase appropriate antibiotic use for UTIs through antibiotic stewardship interventions, we need to thoroughly understand the factors that contribute to these prescribing decisions. OBJECTIVES: (1) to obtain insight into factors contributing to antibiotic prescribing for suspected UTIs in frail older adults. (2) To develop an overarching model integrating these factors to guide the development of antibiotic stewardship interventions for UTIs in frail older adults. METHODS: we conducted an exploratory qualitative study with 61 semi-structured interviews in older adult care settings in Poland, the Netherlands, Norway and Sweden. We interviewed physicians, nursing staff, patients and informal caregivers. RESULTS: participants described a chain of decisions by patients, caregivers and/or nursing staff preceding the ultimate decision to prescribe antibiotics by the physician. We identified five themes of influence: (1) the clinical situation and its complexity within the frail older patient, (2) diagnostic factors, such as asymptomatic bacteriuria, (3) knowledge (gaps) and attitude, (4) communication: interprofessional, and with patients and relatives and (5) context and organisation of care, including factors such as availability of antibiotics (over the counter), antibiotic stewardship efforts and factors concerning out-of-hours care. CONCLUSIONS: decision-making on suspected UTIs in frail older adults is a complex, multifactorial process. Due to the diverse international setting and stakeholder variety, we were able to provide a comprehensive overview of factors to guide the development of antibiotic stewardship interventions.

Throat infections and use of streptococcal antigen test and antibiotic treatment in general practice; a web-based survey.

OBJECTIVE: The aim of this study was to investigate the use of streptococcal antigen tests and antibiotic prescription in general practice in Norway in relation to the national guidelines for sore throat. DESIGN: This study was based on a web-based survey. SETTING: Norwegian general practice. SUBJECTS: 4700 members of the Norwegian College of General Practice received the survey by E-mail. MAIN OUTCOME MEASURES: General practitioner (GP) adherence to national guidelines. RESULTS: In total, 807 GPs responded and were included in the study. According to the guidelines, 20% and 30% of the GPs would perform unnecessary streptococcal antigen testing when presented with mild and severe infections respectively, while 52% would not perform the test at moderate infection. Phenoxymethylpenicillin was recommended by 95% of the GPs. CONCLUSION: In this survey of self-selected GPs, we identified some non-adherence to National guidelines for streptococcal antigen testing and antibiotic prescribing. However, when antibiotic treatment was offered, the correct antibiotics were prescribed.Key pointsNorwegian guidelines for diagnosis and treatment of throat infections include the use of Centor criteria as a clinical tool to limit the unnecessary use of antibiotics. In this web-based survey, we investigated the use of streptococcal antigen tests and antibiotic prescription in general practice in relation to the national guidelines.•Streptococcal antigen tests were not always performed according to Norwegian guidelines, causing inappropriate antibiotic prescribing.•National guidelines were followed in the choice of antibiotics for sore throat.

Phone triage nurses' assessment of respiratory tract infections - the tightrope walk between gatekeeping and service providing. A qualitative study.

BACKGROUND: Phone nurses triage callers to Norwegian out-of-hours cooperatives to estimate the appropriate urgency and level of care for the caller. Many callers with mild symptoms of respiratory tract infections receive a doctor's consultation, which may lead to busy sessions and in turn impair clinical decisions. OBJECTIVE: This study explores how phone triage nurses assess callers with mild-to-moderate symptoms of respiratory tract infections and their views and experiences on triaging and counselling these callers. METHODS: We conducted four focus groups with 22 nurses (five men and 17 women aged 24-66 years) in three different locations in Norway. The interviews were transcribed verbatim and analysed by systematic text condensation. RESULTS: The informants were reluctant to call themselves gatekeepers. However, their description of their work indicates that they practice such a role. When nurses and callers disagreed about the right level of care, the informants sought consensus through strategies and negotiations. The informants described external factors such as organisational or financial issues as decisive for the population's use of out-of-hours services. They also described callers' characteristics, such as language deficiency and poor ability to describe symptoms, as determining their own clinical assessments. CONCLUSIONS: Nurses perceive assessments of callers with respiratory tract infections as challenging. They need skills and time to reach a consensus with the callers and guide them to the right level of health care. This should be considered when planning nurse training and staffing of out-of-hours cooperatives.KEY-POINTSPhone triage nurses assess callers to the out-of-hours service and estimate the level of urgencyThis study explores how phone triage nurses assess callers with respiratory tract infections and their views and experiences on this taskThe nurses describe their professional role as a tightrope walk between gatekeeping and service providingThe nurses seek consensus with callers through strategies and negotiations.

Use of antibiotics during the COVID-19 pandemic. / Bruk av antibiotika under covid-19-pandemien.

BACKGROUND: Interest has been shown in the use of antibiotics during the COVID-19 pandemic. In this article we present the consumption of systemic antibiotics in Norway during the period of the pandemic. MATERIAL AND METHOD: Total sales of systemic antibiotics in defined daily doses (DDD) were retrieved from the wholesaler-based medicinal product statistics for 2019 and 2020, and sales of antibiotics for use outside of healthcare institutions were retrieved from the Norwegian prescription database. Information was retrieved on the proportion of users (prevalence), doses (measured in DDD) and prescriptions. RESULTS: Total sales of systemic antibiotics increased in March 2020, but sales to persons outside of healthcare institutions did not. Compared to previous years, both total consumption and use of antibiotics outside of institutions fell steeply in the months that followed. The reduction was greatest for antibiotics against respiratory infections and in the youngest age groups. INTERPRETATION: The significant reduction in the use of systemic antibiotics during the COVID-19 pandemic is attributed to infection control measures and reduced contact with the health service. In 2016, the Norwegian government set a goal for a 30 % reduction in antibiotic use by the end of 2020. The pandemic has contributed to the achievement of that goal.

Quality improvement and antimicrobial stewardship in general practice - the role of the municipality chief medical officer. A qualitative study.

AIMS: This study aimed to explore the conditions for the Municipal Chief Medical Officers' (MCMOs) involvement in quality improvement in general practice, specifically concerning antibiotic prescribing practices. METHODS: This qualitative study consisted of semi-structured in-depth telephone interviews and group interviews with MCMOs (n = 12). The interview guide aimed to explore the MCMOs' views on their role and responsibilities regarding the quality of care in general practice. The data were analysed using systematic text condensation. RESULTS: Three main themes were identified: 1) the relationship between the municipality and the general practitioner (GP), with the MCMO acting as an intermediary, 2) influencing the GPs' work and 3) antibiotic use and infection control. The MCMOs perceived themselves as liaisons between the municipalities and the GPs. They emphasized building trust, showing respect and sharing common values in their interactions with the GPs, upholding the GPs' professional autonomy. Working for quality improvement was considered a priority; however, MCMOs expressed a need for external support to establish a permanent quality improvement framework. The informants were positive about engaging in improving antibiotic prescribing practices because this combined the municipality's responsibilities for quality improvement and communicable disease control. CONCLUSIONS: The MCMOs considered themselves as well-suited agents for quality improvement in general practice, as liaisons between the municipalities and the GPs. Quality improvement in general practice would benefit from a clearer structure in terms of the MCMOs' roles and responsibilities. Within communicable diseases control, the MCMOs have a clear mandate, which places antimicrobial stewardship initiatives in a favourable position amongst other areas of quality improvement.

Antibiotic prescribing for acute respiratory tract infections in Norwegian primary care out-of-hours service.

PURPOSE: To examine factors correlating with antibiotic prescribing for acute respiratory tract infections (ARTIs) in Norwegian primary care out-of-hours service. MATERIALS AND METHODS: Retrospective data analysis for the year 2014 in two out-of-hours primary care units located in the towns of Hamar and Tønsberg in Norway, analysing type and frequency of different antibiotics prescribed by 117 medical doctors for ARTIs, and factors correlating with these. RESULTS: The 117 doctors in two out-of-hours units diagnosed 6757 cases of ARTIs. 2310 (34.2%) of these resulted in an antibiotic prescription, where of 1615 (69.9%) were penicillin V (PcV). Tonsillitis and sinusitis were the two ARTI diagnoses with the highest antibiotic prescription rate. The antibiotic prescription rate increased successively with increasing activity level, measured as shorter median duration of consultations per session, from 28.7% (reference) in the least busy quintile of sessions to 36.6% (OR: 1.38 (95% CI =1.06-1.80)) in the busiest quintile of sessions. Prescribing of broad-spectrum antibiotics was not correlated with median duration of consultations per session. Female doctors had an OR of 0.61 (0.40-0.92) of a broad-spectrum antibiotic prescription compared to their male colleagues. CONCLUSIONS: Antibiotic prescribing for ARTIs in the primary care out-of-hours services investigated is at the same level as in Norwegian general practice, but with a higher prescription rate of PcV. Antibiotic prescribing increases on busy sessions, measured as median duration of consultations per session. The work frame in primary care out-of-hours service might influence the quality of clinical decisions.

[Use of antibiotics during pregnancy]. / Bruk av antibiotika i svangerskapet.

BACKGROUND: Antibiotics are the most widely used medication on prescription in pregnancy. It is therefore important to investigate whether antibiotic use in pregnancy can harm the foetus. During the last decade the availability of data from national registries has made it possible to conduct large-scale epidemiological studies. In this article we aimed to review recent studies on the risk of congenital anomalies and miscarriage resulting from the use of antibiotics in pregnancy. METHOD: A literature search was conducted in MedLine, Embase and PubMed for the period 1 December 2005-1 December 2015. We identified 1,316 articles, of which 23 met the inclusion criteria. RESULTS: Recent epidemiological studies have focused on investigating the risks of malformations and pyloric stenosis after exposure to macrolides, nitrofurantoin, penicillins and trimethoprim-sulphamethoxazole. In nine of ten studies that included in total more than 38,000 patients exposed to macrolides, and two studies with more than 7,000 exposed to nitrofurantoin, no significantly increased risk of malformations was discovered. There are some contradictory findings for certain groups of antibiotics with regard to the risk of miscarriage, heart defects and pyloric stenosis. INTERPRETATION: Recent studies indicate that erythromycin and nitrofurantoin can be used as second-line drugs in the first trimester. The results from recent studies concur with the recommendations for pregnant women in national guidelines regarding antibiotic use in the primary health service.