Enhanced bleeding with cefoxitin or moxalactam. Statistical analysis within a defined population of 1493 patients.

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Brown RB, Klar J, Lemeshow S, Teres D, Pastides H, Sands M

Enhanced bleeding with cefoxitin or moxalactam. Statistical analysis within a defined population of 1493 patients.

Arch Intern Med. 1986 Nov;146(11):2159-64.

PubMed ID
3778044 [ View in PubMed
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Abstract

Most cases of beta-lactam-associated coagulopathy occur in patients with other risk factors. This study analyzed temporally related clinical bleeding events in 1493 patients who received one antibiotic for at least three days. Univariate and multivariate analyses controlled for condition variables (nutritional status, renal, hepatic, or hematologic dysfunction, intensive care unit stay) and treatment variables (use of antiplatelet agents, anticoagulants, vitamin K, antitumor chemotherapy or antiulcer therapy, steroids) that could have been associated with bleeding independently. Rates of bleeding ranged from 0% (chloramphenicol sodium succinate, vancomycin hydrochloride, erythromycin lactobionate) to 8.2% (cefoxitin) to 22.2% (moxalactam disodium). Multiple logistic regression analyses revealed that only moxalactam (odds ratio, 9.9) and cefoxitin (odds ratio, 2.1) exhibited significantly higher likelihoods of bleeding than other agents. This study statistically confirms increased risk of bleeding with moxalactam, heretofore reported only anecdotally. Cefoxitin may carry risks greater than previously believed.

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