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Schmitz, Gillian R., MD; Bruner, David, MD; Pitotti, Rebecca, RN, BSN; Olderog, Cameron, MD; Livengood, Timothy, MD; Williams, Justin, MD; Huebner, Kermit, MD; Lightfoot, Jeffrey, MD; Ritz, Brandon, MD; Bates, Christopher, MD; Schmitz, Matthew, MD; Mete, Mihriye, PhD; Deye, Gregory, MD
Annals of emergency medicine, 09/2010, Volume: 56, Issue: 3Journal Article
Study objective Community-associated methicillin-resistant Staphylococcus aureus is now the leading cause of uncomplicated skin abscesses in the United States, and the role of antibiotics is controversial. We evaluate whether trimethoprim-sulfamethoxazole reduces the rate of treatment failures during the 7 days after incision and drainage and whether it reduces new lesion formation within 30 days. Methods In this multicenter, double-blind, randomized, placebo-controlled trial, we randomized adults to oral trimethoprim-sulfamethoxazole or placebo after uncomplicated abscess incision and drainage. Using emergency department rechecks at 2 and 7 days and telephone follow-up, we assessed treatment failure within 7 days, and using clinical follow-up, telephone follow-up, and medical record review, we recorded the development of new lesions within 30 days. Results We randomized 212 patients, and 190 (90%) were available for 7-day follow-up. We observed a statistically similar incidence of treatment failure in patients receiving trimethoprim-sulfamethoxazole (15/88; 17%) versus placebo (27/102; 26%), difference 9%, 95% confidence interval –2% to 21%; P =.12. On 30-day follow-up (successful in 69% of patients), we observed fewer new lesions in the antibiotic (4/46; 9%) versus placebo (14/50; 28%) groups, difference 19%, 95% confidence interval 4% to 34%, P =.02. Conclusion After the incision and drainage of uncomplicated abscesses in adults, treatment with trimethoprim-sulfamethoxazole does not reduce treatment failure but may decrease the formation of subsequent lesions.
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