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  • Title: The role of adjunctive antibiotics in the treatment of skin and soft tissue abscesses: a systematic review and meta-analysis.
    Author: Fahimi J, Singh A, Frazee BW.
    Journal: CJEM; 2015 Jul; 17(4):420-32. PubMed ID: 26013989.
    Abstract:
    OBJECTIVE: To perform a review and meta-analysis on the effect of antibiotics on treatment of skin and soft tissue abscesses (SSTAs) after incision and drainage. METHODS: We searched MEDLINE, EMBASE, Web of Knowledge, and Google Scholar databases to identify randomized controlled trials (RCTs) and observational studies. For RCTs, we included studies comparing any antibiotic (treatment) to placebo (control). For observational studies, treatment was the use of appropriate antibiotics effective against bacterial isolate, and control was the use of inappropriate (ineffective) or no antibiotics. Outcome was treatment success during follow-up. Two investigators reviewed records, assessed quality (according to Cochrane and Newcastle-Ottawa tools), and extracted treatment success rates. Primary analysis was the effect of treatment among RCTs. Secondary analyses included the effect of treatment in 1) observational studies of confirmed methicillin-resistant Staphylococcus aureus (MRSA) infection (MRSA-only) and 2) all studies after 1998 (MRSA-era). We used random effects modelling, except when no heterogeneity was present when we used fixed effects. RESULTS: We screened 1,968 records. Twelve were included (five RCTs, seven observational studies), representing 1,969 subjects. Seven enrolled from emergency departments, two from surgical clinics, and three from ambulatory clinics. Three enrolled children only. Pooled relative risk (RR) of treatment success among RCTs was 1.03 (95% confidence interval [CI] 0.97-1.08). Pooled RR in the secondary analyses was 1.05 (95% CI 0.96-1.15) in MRSA-only and 0.99 (95% CI 0.98-1.01) in MRSA-era. CONCLUSION: Despite limitations in pooling available data, there is no clear evidence to support antibiotic use in treating uncomplicated SSTAs.
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