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  • Title: Pharmacokinetics of cefuroxime in traumatic wound secretion and antibacterial activity under vacuum therapy.
    Author: Bischoff M, Beck A, Frei P, Bischoff G.
    Journal: J Chemother; 2010 Apr; 22(2):92-7. PubMed ID: 20435567.
    Abstract:
    The objective of this study was to investigate the pharmacokinetics of cefuroxime in wound secretion and the antibacterial activity of the traumatic wound secretion in patients receiving cefuroxime and in those not receiving antibiotics. Included in the present controlled, prospective, non-randomized study were 12 patients with an open fracture who needed vacuum therapy (group A) and 12 patients with a closed fracture, who, due to soft tissue damage, also underwent treatment with vacuum therapy (group B). Wound secretion was obtained on the first, third and fifth postoperative days and exposed to the test bacteria, Staphylococcus aureus and Staphylococcus epidermidis. Patients in group A underwent systemic antibiotic treatment with cefuroxime administered intravenously at a dose of 1.5 g every 8 hours. Patients in group B did not receive antibiotics. Cefuroxime concentrations were determined using high-performance liquid chromatography (HPLC). Antibacterial activity was determined using the inhibition test. Maximum cefuroxime concentrations in wound secretion were measured at 4-5 hours following intravenous administration and, with a mean concentration of 10 mg/l, remained consistently above the minimum inhibitory concentration (MIC) for the test bacteria at all points during the measurement period. As expected, the antibacterial activity of the wound secretion in patients in group A (cefuroxime) was higher than that in group B (no antibiotics). In group A, antibacterial activity against S. aureus was 94.6% and 100% against S. epidermidis. In group B, antibacterial activity against S. aureus was 61% and 81% against S. epidermidis. Cefuroxime reaches the highest level in wound secretion after 4 hours. The high antibacterial activity of the wound secretion in traumatic closed fractures is elevated by cefuroxime. in addition, our findings show that vacuum therapy of wounds is suitable as a non-invasive method for studying the pharmacokinetics of antibiotics.
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