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Sensitivity of enterococci to beta-lactam antibiotics, co-trimoxazole, nitrofurantoin, tetracycline and doxycycline.

Authors
  • Grimm, H
Type
Published Article
Journal
Arzneimittel-Forschung
Publication Date
Jan 01, 1983
Volume
33
Issue
3
Pages
419–423
Identifiers
PMID: 6603227
Source
Medline
License
Unknown

Abstract

The current sensitivity of enterococci to a total of 20 antibiotics (5 penicillins, 11 cephalosporins, cotrimoxazole (trimethoprim + sulfamethoxazole), nitrofurantoin, tetracycline, and doxycycline) was evaluated by determining the respective MICs. Ampicillin is certainly the drug of first choice for the treatment of moderately severe infections due to enterococci. Nitrofurantoin is equally effective in urinary tract infections. Co-trimoxazole is a suitable alternative in the presence of penicillin allergy. Penicillin G and tetracyclines should not be used in enterococcal infections. All cephalosporins presently available are ineffective against these bacteria. In view of the results of in vitro sensitivity test for bacteria, acylureido penicillins should be preferred to cephalosporins in very serious infections and mixed infections, especially in immunocompromised hosts. Azlocillin, mezlocillin and piperacillin are the most effective drugs to prevent superinfections with enterococci in clinically and bacteriologically defined situations. The combination of these drugs with aminoglycosides is the most effective antibiotic therapy for serious infections known so far. The influence of inoculum density on MIC and MBC values was investigated. The detailed discussion of the laboratory's own results and of the data reported in the literature points to the inadequacies of the test methods which have been used so far.

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