Diagnosing streptococcal sore throat in adults: randomized controlled trial of in-office aids
- PMID: 17872717
- PMCID: PMC1952596
Diagnosing streptococcal sore throat in adults: randomized controlled trial of in-office aids
Erratum in
- Can Fam Physician. 2007 Jun;53(6):1006
Abstract
Objective: To determine whether use of clinical decision rules or rapid streptococcal antigen detection tests (alone or in combination) can lower the number of unnecessary prescriptions for antibiotics for adults with acute sore throats.
Design: Four-arm randomized controlled trial.
Setting: Family practice offices in eastern Newfoundland.
Participants: Forty urban and suburban family practitioners.
Interventions: Participants were randomly assigned to one of 4 arms (usual practice, decision rules only, rapid antigen test only, decision rules and antigen test combined), and each recruited successive adult patients presenting with acute sore throat as their main symptom. Following usual care or use of decision rules or rapid antigen tests or both (where applicable), physicians were to record what they prescribed for each patient.
Main outcome measures: Prescribing rates and types of antibiotics prescribed.
Results: The prescribing rate using decision rules (55%) did not differ significantly from the rate using usual clinical practice (58%). Physicians using rapid antigen tests, both alone and with decision rules, had significantly lower prescribing rates (27% and 38%, respectively, both P < .001).
Conclusion: Evidence-based clinical decision rules alone do not change family doctors' prescribing behaviour. Use of rapid antigen tests might allow physicians to persuade patients that negative results (and hence, viral infection) mean antibiotic therapy is not required.
OBJECTIF: Déterminer si l’utilisation de règles de décisions cliniques ou de tests rapides de dépistage des antigènes de streptocoques (seuls ou combinés) peut réduire le nombre d’ordonnances d’antibiotiques inutiles pour des adultes souffrant de mal de gorge aigu.
CONCEPTION: Étude contrôlée randomisée à 4 volets.
CONTEXTE: Cabinets de pratique familiale dans l’Est de Terre-Neuve.
PARTICIPANTS: Quarante praticiens de la médecine familiale en milieu urbain et en banlieue.
INTERVENTIONS: On a assigné au hasard les participants à l’un des 4 volets (pratique habituelle, règles de décision seulement, test rapide de dépistage des antigènes seulement, règles de décisions et test des antigènes combinés). Chacun a recruté les patients adultes seprésentant successivement avec un mal de gorge aigu comme principal symptôme. À la suite des soins habituels, de l’utilisation des règles de décisions, des tests de dépistage rapide des antigènes ou des deux (selon le cas), les médecins devaient consigner ce qu’ils avaient prescrit à chacun de ces patients.
PRINCIPALES MESURES DES RÉSULTATS: Taux de prescription et types d’antibiotique prescrits.
RÉSULTATS: Le taux de prescription après avoir utilisé les règles de décisions (55%) ne différait pas considérablement de celui des médecins suivant leur pratique clinique habituelle (58%). Les médecins qui utilisaient les tests de dépistage rapide des antigènes, seuls ou combinés aux règles de décisions, enregistraient des taux beaucoup plus bas de prescription (27% et 38% respectivement, dans les deux cas P < ,001).
CONCLUSION: Les règles de décisions cliniques fondées sur des données scientifiques, utilisées seules, ne changent pas le comportement des médecins de famille en matière de prescription. L’utilisation des tests de dépistage rapide des antigènes pourrait permettre aux médecins de persuader leurs patients que des résultats négatifs (donc une infection virale) signifient que l’antibiothérapie n’est pas nécessaire.
Figures
Comment in
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Should we treat strep throat with antibiotics?Can Fam Physician. 2007 Aug;53(8):1299. Can Fam Physician. 2007. PMID: 17872842 Free PMC article. No abstract available.
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