Sigurd Høye

Improving antibiotic prescribing in acute respiratory tract infections: cluster randomised trial from Norwegian general practice (prescription peer academic detailing (Rx-PAD) study)

Objective To assess the effects of a multifaceted educational intervention in Norwegian general practice aiming to reduce antibiotic prescription rates for acute respiratory tract infections and to reduce the use of broad spectrum antibiotics. Design Cluster randomised controlled study. Setting Existing continuing medical education groups were recruited and randomised to intervention or control. Participants 79 groups, comprising 382 general practitioners, completed the interventions and data extractions. Interventions The intervention groups had two visits by peer academic detailers, the first presenting the national clinical guidelines for antibiotic use and recent research evidence on acute respiratory tract infections, the second based on feedback reports on each general practitioner’s antibiotic prescribing profile from the preceding year. Regional one day seminars were arranged as a supplement. The control arm received a different intervention targeting prescribing practice for older patients. Main outcome measures Prescription rates and proportion of non-penicillin V antibiotics prescribed at the group level before and after the intervention, compared with corresponding data from the controls. Results In an adjusted, multilevel model, the effect of the intervention on the 39 intervention groups (183 general practitioners) was a reduction (odds ratio 0.72, 95% confidence interval 0.61 to 0.84) in prescribing of antibiotics for acute respiratory tract infections compared with the controls (40 continuing medical education groups with 199 general practitioners). A corresponding reduction was seen in the odds (0.64, 0.49 to 0.82) for prescribing a non-penicillin V antibiotic when an antibiotic was issued. Prescriptions per 1000 listed patients increased from 80.3 to 84.6 in the intervention arm and from 80.9 to 89.0 in the control arm, but this reflects a greater incidence of infections (particularly pneumonia) that needed treating in the intervention arm. Conclusions The intervention led to improved antibiotic prescribing for respiratory tract infections in a representative sample of Norwegian general practitioners, and the courses were feasible to the general practitioners. Trial registration Clinical trials NCT00272155.

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

Abstract 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.

Antibiotic switch during treatment with antibiotics against respiratory tract infections in ambulatory care in Norway

Abstract Objectives: To compare antibiotic treatment failure evaluated as switch from one type of antibiotics to another in ambulatory care. Methods: Data on all dispensed doxycycline, amoxicillin, phenoxymethylpenicillin and macrolides in Norway June 2013 – May 2015, was retrieved from the Norwegian Prescription Database. We computed switch rates for the selected antibiotics on day 1–28 after initial dispensing, and the corresponding odds-ratios, adjusted for patients´ age and gender, and prescribers´ specialty. Results: Of 1.860.036 dispensed antibiotics, 103.076 (5.5%) were switched within 28 days. Within 10 days after the index date, the switch rate was highest for phenoxymethylpenicillin (4.1%), followed by amoxicillin (2.5%), macrolides and doxycycline (2.2%). Conclusions: The switch rate after initial dispensing of phenoxymethylpenicillin is higher than that of more broad-spectrum antibiotics. However, it is still low, supporting the recommendation of phenoxymethylpenicillin as first line treatment when an antibiotic is indicated for a respiratory tract infection in primary care.

Geographic Variation in Antibiotic Consumption—Is It Due to Doctors’ Prescribing or Patients’ Consulting?

Antibiotic consumption varies greatly between Norwegian municipalities. We examine whether this variation is associated with inhabitants’ consultation rates or general practitioners’ (GP) prescription rates. Our study comprises consultations and antibiotic prescriptions for respiratory tract infections (RTIs) in general practice in all Norwegian municipalities with over 5000 inhabitants in 2014. Data was collected from The Norwegian Prescription Database, The Directorate of Health’s system for control and payment of health reimbursements registry and Norway Statistics. Consultation rates and prescription rates were categorised in age- and gender specific quintiles and the effect on antibiotic consumption was analysed using a Poisson regression model. We found that inhabitants with RTIs received 42% more prescriptions if they belonged to a municipality with high consultation rates compared to low consultation rates [incidence rate ratio (IRR) 1.42 (95% CI 1.41–1.44)] and 48% more prescriptions if they belonged to a municipality with high prescription rates versus low prescription rates [IRR 1.48 (95% KI 1.47–1.50)]. Our results demonstrate that inhabitants’ consultation rates and GPs’ prescription rates have about equal impact on the number of RTI antibiotics prescribed at municipality level. These findings highlight the importance of interventions targeting patients as well as doctors in efforts to reduce unnecessary antibiotic consumption.

Phenoxymethylpenicillin Versus Amoxicillin for Infections in Ambulatory Care: A Systematic Review

Most antibiotics are prescribed in primary care, and commonly for respiratory tract infections (RTIs). Narrow-spectrum phenoxymethylpenicillin is the antibiotic of choice for RTIs in the Scandinavian countries, while broader spectrum amoxicillin is used in most other European countries. This review summarizes the knowledge of the effect of phenoxymethylpenicillin versus amoxicillin for infections treated in ambulatory care. We searched PubMed/Medline and Embase for trials comparing the clinical effect of phenoxymethylpenicillin and amoxicillin. The Norwegian Knowledge Centre for the Health Services’ checklist was used to assess risk of bias. In total, 1687 studies were identified, and 18 of these fulfilled the inclusion criteria. One additional study was found as a reference. The randomized controlled trials revealed no significant differences in clinical effect in acute sinusitis (three RCTs), GAS tonsillitis (11 RCTs) and Lyme borreliosis (two RCTs). One RCT on community-acquired pneumonia found amoxicillin to be superior, while the results were conflicting in the two RCTs on acute otitis. The results suggest that non-Scandinavian countries should consider phenoxymethylpenicillin as the treatment of choice for RTIs because of its narrower spectrum. More studies should be conducted on the clinical effect of phenoxymethylpenicillin versus amoxicillin for acute otitis and lower RTIs.

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Use of antibiotics during pregnancy

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.

Influensavaksine til pleierne – bra for pasientene?

Influensa kan være en livstruende sykdom for eldre beboere i sykehjem. Influensavaksinering av de ansatte kan tenkes å redusere beboernes eksponering for influensasmitte, og slik vaksinering er derfor anbefalt av helsemyndigheter i flere land. I en ny Cochrane-rapport sammenfattes hvilken effekt influensavaksinering av sykehjemsansatte har på forekomst av influensa og komplikasjoner til sykdommen hos sykehjemsbeboere over 60 år (1). Tre randomiserte, kontrollerte studier ble identifisert. Det ble ikke funnet noen effekt av vaksinering, verken på forekomst av influensa, sykehusinnleggelser eller død på grunn av nedre luftveisinfeksjon. – Det finnes få studier der man har undersøkt om vaksinasjon av helsepersonell har en indirekte effekt på influensasykdom og dens konsekvenser hos beboere i sykehjem, sier Marianne A. Riise Bergsaker, overlege ved Avdeling for vaksine, Folkehelseinstituttet. – I Cochrane-rapporten etterlyses randomiserte, kontrollerte studier av høy kvalitet med endepunkt påvist influensavirus og influensarelaterte dødsfall. Slike studier er vanskelige å gjennomføre på grunn av kravet til størrelse og ressurser. Derfor vil nok kunnskap om betydningen av vaksinering av helsepersonell på pasienters risiko for influensasykdom og utfallet av influensainfeksjon primært måtte bygge på ikke-randomiserte studier og erfaringer fra indirekte vaksinasjon i andre sammenhenger, sier Riise Bergsaker. – Slike studier tyder på at vaksinasjon av helsepersonell har betydning for pasientene, sier hun.