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Related Experiment Videos

Extended-spectrum (second- and third-generation) cephalosporins.

N L Eriksen1, J D Blanco

  • 1Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Texas Medical School, Houston.

Obstetrics and Gynecology Clinics of North America
|September 1, 1992
PubMed
Summary

Extended-spectrum cephalosporins offer enhanced activity against specific bacteria but are more expensive. First-generation cephalosporins remain cost-effective for surgical prophylaxis, while third-generation agents are best for resistant infections.

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Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Antimicrobial Stewardship

Background:

  • First-generation cephalosporins are cost-effective but have limited spectrum.
  • Extended-spectrum cephalosporins (second- and third-generation) exhibit broader activity against Gram-negative bacilli and anaerobes.
  • Specific agents like cefoxitin, cefotetan, and ceftriaxone show efficacy against *Bacteroides fragilis*.

Purpose of the Study:

  • To compare the efficacy and cost-effectiveness of different cephalosporin generations.
  • To guide the appropriate use of cephalosporins in surgical prophylaxis and treatment of infections.
  • To inform antimicrobial stewardship by delineating optimal applications for each drug class.

Main Methods:

  • Comparative analysis of antimicrobial activity spectra.

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  • Review of clinical efficacy data for surgical prophylaxis and treatment of specific infections.
  • Cost-effectiveness evaluation of first-generation versus extended-spectrum cephalosporins.

    • Main Results:

    • Extended-spectrum cephalosporins demonstrate superior activity against Gram-negative bacilli and anaerobes compared to first-generation agents.
    • Second- and third-generation cephalosporins are effective for postoperative infections and pelvic inflammatory disease due to activity against *B. fragilis*.
    • Extended-spectrum cephalosporins are as effective as first-generation agents for cesarean section and hysterectomy prophylaxis, but at a higher cost.
    • First-generation cephalosporins are the preferred choice for prophylaxis due to lower cost.
    • Third-generation cephalosporins are recommended for meningitis and resistant nosocomial infections.

    Conclusions:

    • First-generation cephalosporins are the most cost-effective option for surgical prophylaxis.
    • Extended-spectrum cephalosporins offer advantages for treating specific infections like those involving *B. fragilis*.
    • Judicious use of third-generation cephalosporins is essential for managing severe and resistant infections.