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Related Experiment Videos

Analysis of cefepime tissue penetration into human appendix.

M P Okamoto1, A Chin, M A Gill

  • 1School of Pharmacy, University of Southern California, Los Angeles 90033.

Pharmacotherapy
|January 1, 1991
PubMed
Summary

This study measured cefepime concentrations in appendicitis patients. Cefepime demonstrated significant penetration into appendix tissue and peritoneal fluid, suggesting efficacy against abdominal infections.

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Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Surgical Infections

Background:

  • Cefepime is a broad-spectrum cephalosporin effective against Gram-positive and Gram-negative bacteria.
  • Appendicitis, particularly perforated or gangrenous forms, requires effective antibiotic treatment.
  • Understanding antibiotic distribution in infected tissues is crucial for optimizing therapy.

Purpose of the Study:

  • To evaluate cefepime concentrations in plasma, peritoneal fluid, and appendix tissue.
  • To compare cefepime's pharmacokinetic profile with a standard regimen in appendicitis patients.
  • To assess the correlation between drug concentrations and time after administration.

Main Methods:

  • Randomized trial comparing cefepime plus metronidazole with gentamicin plus clindamycin.

Related Experiment Videos

  • Analysis of plasma, peritoneal fluid, and appendix tissue samples using high-pressure liquid chromatography.
  • Measurement of drug concentrations at various time points post-administration.

    • Main Results:

    • Cefepime achieved measurable concentrations in plasma, peritoneal fluid, and appendix tissue.
    • The appendix tissue to plasma ratio was 0.66, and peritoneal fluid to plasma ratio was 0.66.
    • Statistically significant negative correlations were found between drug concentrations and the time elapsed since administration (delta time).

    Conclusions:

    • Cefepime demonstrates good penetration into the peritoneal cavity and appendix tissue in patients with appendicitis.
    • These findings support the potential clinical utility of cefepime in treating complicated appendicitis.
    • Further research may explore optimal dosing strategies based on these pharmacokinetic data.