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Related Experiment Videos

Antibiotic concentrations in intestinal mucosa.

A S Malmborg

    Scandinavian Journal of Infectious Diseases. Supplementum
    |January 1, 1985
    PubMed
    Summary

    This study measured antibiotic levels in colorectal surgery patients. Therapeutic concentrations of cefoxitin, piperacillin, and clindamycin were achieved in intestinal tissue during surgery.

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    Area of Science:

    • Pharmacology
    • Surgical Prophylaxis
    • Microbiology

    Background:

    • Antibiotic prophylaxis is crucial in colorectal surgery to prevent surgical site infections.
    • Understanding antibiotic distribution in target tissues is essential for optimizing prophylaxis regimens.

    Purpose of the Study:

    • To determine the concentrations of cefoxitin, piperacillin, and clindamycin in intestinal mucosa following prophylactic administration.
    • To assess whether therapeutic antibiotic levels are maintained in the intestinal mucosa throughout colorectal surgery.

    Main Methods:

    • Patients undergoing elective colorectal surgery received a single dose of cefoxitin, piperacillin, or clindamycin at anesthesia induction.
    • Antibiotic concentrations in serum and intestinal mucosal biopsies were quantified using the microbiological agar diffusion method.
    • Mucosa to serum concentration ratios were calculated for each antibiotic.

    Main Results:

    • Therapeutic concentrations of cefoxitin, piperacillin, and clindamycin were observed in the intestinal mucosa.
    • These therapeutic levels were sustained for a significant portion of the surgical procedure.
    • Mean mucosa/serum concentration ratios were 0.4 for cefoxitin, 0.5 for piperacillin, and 1.2 for clindamycin.

    Conclusions:

    • Prophylactic administration of cefoxitin, piperacillin, and clindamycin achieves therapeutic concentrations in intestinal mucosa during colorectal surgery.
    • The study provides valuable pharmacokinetic data for these antibiotics in the context of surgical prophylaxis.
    • Findings support the continued use of these antibiotics for infection prevention in this patient population.

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