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IDSA: Surgical Site Infections Up With Reported Penicillin Allergy

Last Updated: October 09, 2017.

Patients with penicillin allergy have increased odds of surgical site infection, according to a study published online Oct. 9 in Clinical Infectious Diseases to coincide with presentation at IDWeek, the combined annual meeting of the Infectious Diseases Society of America, the Society for Healthcare Epidemiology of America, the HIV Medicine Association, and the Pediatric Infectious Diseases Society, held Oct. 4 to 8 in San Diego.

MONDAY, Oct. 9, 2017 (HealthDay News) -- Patients with penicillin allergy have increased odds of surgical site infection (SSI), according to a study published online Oct. 9 in Clinical Infectious Diseases to coincide with presentation at IDWeek, the combined annual meeting of the Infectious Diseases Society of America, the Society for Healthcare Epidemiology of America, the HIV Medicine Association, and the Pediatric Infectious Diseases Society, held Oct. 4 to 8 in San Diego.

Kimberley G. Blumenthal, M.D., from Massachusetts General Hospital in Boston, and colleagues conducted a retrospective cohort study involving 8,385 patients who underwent 9,004 procedures from 2010 to 2014.

A total of 11 percent of patients reported a penicillin allergy, and 2.7 percent had an SSI. The researchers found that patients reporting a penicillin allergy had increased odds of SSI in multivariable logistic regression (adjusted odds ratio, 1.51). Compared with patients without a reported penicillin allergy, those who reported penicillin allergy were administered less cefazolin and more clindamycin, vancomycin, and gentamicin. The increased risk of SSI was mediated entirely by the patients' receipt of an alternative perioperative antibiotic. To prevent one SSI, between 112 and 124 patients with reported penicillin allergy would need allergy evaluation.

"Patients with a reported penicillin allergy had a 50 percent increased odds of SSI, attributable to the receipt of second-line perioperative antibiotics," the authors write. "Clarification of penicillin allergies as part of routine preoperative care may decrease SSI risk."

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