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Gentamicin-resistant enterococci and endocarditis.

R Holliman1, E Smyth

  • 1Department of Medical Microbiology, St George's Hospital, London, UK.

Postgraduate Medical Journal
|June 1, 1989
PubMed
Summary
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A rare case of endocarditis caused by gentamicin-resistant enterococci highlights the need for specialized treatment. In vitro testing and cardiac surgery led to recovery when standard therapies failed.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Endocarditis is a serious infection of the heart valves.
  • Enterococcal infections can be challenging to treat, especially with rising antibiotic resistance.
  • Gentamicin resistance in enterococci complicates standard treatment regimens.

Observation:

  • A patient presented with endocarditis caused by an enterococcus strain exhibiting high-level gentamicin resistance.
  • Conventional antibiotic combination therapy proved ineffective in resolving the infection.
  • The patient's clinical condition did not improve with standard treatment protocols.

Findings:

  • Successful clinical resolution was achieved through a combination of cardiac surgery and tailored antimicrobial therapy.

Related Experiment Videos

  • Antimicrobial treatment was guided by in vitro susceptibility testing of the specific enterococcal isolate.
  • This case underscores the limitations of standard therapies against highly resistant pathogens.

    • Implications:

    • Clinical laboratories should routinely test blood culture isolates of enterococci for high-level gentamicin resistance.
    • Management strategies for endocarditis caused by gentamicin-resistant enterococci necessitate individualized patient assessment.
    • Extensive laboratory investigation is crucial for guiding effective antimicrobial selection in complex cases.