Short-course antibiotics for acute otitis media
Anita Kozyrskyj1, Terry P Klassen, Michael Moffatt
1Department of Pediatrics, Faculty of Medicine & Dentistry, University of Alberta, 8226a Aberhart Centre, 11402 University Ave, Edmonton, Alberta, Canada, T6G 2J3.
Insights
Short antibiotic courses (less than seven days) for acute otitis media in children show a slightly higher treatment failure rate compared to longer courses. However, shorter durations significantly reduce gastrointestinal side effects.
Area of Science:
- Pediatrics
- Infectious Diseases
- Pharmacology
Background:
- Acute otitis media (AOM) is a prevalent childhood illness frequently treated with antibiotics.
- Antibiotic prescribing practices for AOM vary, prompting research into optimal treatment durations.
Purpose of the Study:
- To compare the efficacy of short antibiotic courses (less than seven days) versus long courses (seven days or more) for treating AOM in pediatric patients.
- To assess treatment failure rates and adverse events associated with different antibiotic durations in children.
Main Methods:
- A systematic review and meta-analysis of randomized controlled trials were conducted.
- Searches included major databases like CENTRAL, MEDLINE, EMBASE, and others up to November 2009.
- Trials included children aged one month to 18 years with diagnosed AOM, no prior antimicrobial therapy, and randomized to short or long antibiotic courses.
Main Results:
- The study analyzed 49 trials with 12,045 participants.
- Short antibiotic courses were associated with a higher risk of treatment failure (OR 1.34) at one month post-therapy (21% vs. 18% absolute difference).
- Significant reductions in gastrointestinal adverse events were observed with short-acting antibiotics and azithromycin compared to longer courses.
Conclusions:
- While longer antibiotic courses show a marginal benefit in reducing treatment failure for AOM, clinicians must weigh this against the increased risk of adverse events.
- The findings suggest a need for careful consideration of antibiotic duration to balance treatment efficacy and minimize side effects in pediatric AOM management.
Background:
Acute otitis media (AOM) is a common illness during childhood, for which antibiotics are frequently prescribed.
Objectives:
To determine the effectiveness of a short course of antibiotics (less than seven days) in comparison to a long course of antibiotics (seven days or greater) for the treatment of AOM in children.
Search Strategy:
We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2009, issue 4) which contains the Acute Respiratory Infections Group's Specialised Register, MEDLINE, EMBASE, MEDLINE In-Process & Other Non-Indexed Citations, CINAHL, BIOSIS Previews, OCLC Papers First and Proceedings First, Proquest Dissertations and Theses (inception to November 2009); International Pharmaceutical Abstracts, the NLM Gateway, ClinicalTrials.gov and Current Controlled Trials (inception to August 2008).
Selection Criteria:
Trials were included if they met the following criteria: participants aged one month to 18 years; clinical diagnosis of ear infection; no previous antimicrobial therapy; and randomisation to treatment with less than seven days versus seven days or more of antibiotics.
Data Collection And Analysis:
The primary outcome of treatment failure was defined as the absence of clinical resolution, relapse or recurrence of AOM during one month following initiation of therapy. Treatment outcomes were extracted from individual studies and combined in the form of a summary odds ratio (OR). A summary OR of 1.0 indicates that the treatment failure rate following less than seven days of antibiotic treatment was similar to the failure rate following seven days or more of treatment.
Main Results:
This update included 49 trials containing 12,045 participants. Risk of treatment failure was higher with short courses of antibiotics (OR 1.34, 95% CI 1.15 to 1.55) at one month after initiation of therapy (21% failure with short-course treatment and 18% with long-course; absolute difference of 3% between groups). There were no differences found when examining treatment with ceftriaxone for less than seven days (30% failure in those receiving ceftriaxone and 27% in short-acting antibiotics administered for seven days or more) or azithromycin for less than seven days (18% failure in both those receiving azithromycin and short-acting antibiotics administered for seven days or more) with respect to risk of treatment failure at one month or less. Significant reductions in gastrointestinal adverse events were observed for treatment with short-acting antibiotics and azithromycin.
Authors' Conclusions:
Clinicians need to evaluate whether the minimal short-term benefit from longer treatment of antibiotics is worth exposing children to a longer course of antibiotics.
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