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Three cases of destructive native valve endocarditis caused by Staphylococcus lugdunensis

L Van Hoovels1, P De Munter, J Colaert

  • 1Department of Laboratory Medicine and Bacteriology, University Hospital Leuven, Herestraat 49, 3000 Leuven, Belgium.

European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology
|February 5, 2005
PubMed

Insights

Staphylococcus lugdunensis can cause severe native valve endocarditis, leading to fatalities even with treatment. Prompt surgical intervention is crucial for S. lugdunensis endocarditis.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Cardiology

Background:

  • Native valve endocarditis is a serious infection of the heart valves.
  • Coagulase-negative staphylococci are often considered less virulent than Staphylococcus aureus.
  • Accurate identification of bacterial pathogens is critical for effective treatment.

Observation:

  • Three cases of acute native valve endocarditis caused by Staphylococcus lugdunensis were observed.
  • These infections presented with severe complications, including mortality in two patients despite aggressive medical and surgical management.
  • The clinical course highlights the aggressive potential of S. lugdunensis.

Findings:

  • Staphylococcus lugdunensis can be a highly virulent cause of native valve endocarditis.
  • Mortality rates can be high, underscoring the severity of infections caused by this pathogen.
  • Misidentification of S. lugdunensis is a concern, as it may be mistaken for S. aureus or other coagulase-negative staphylococci by commercial systems.

Implications:

  • Species-level identification of coagulase-negative staphylococci is essential, particularly in cases of endocarditis.
  • Isolation of S. lugdunensis from sterile sites should not be dismissed as contamination.
  • Early surgical intervention should be strongly considered for patients with S. lugdunensis endocarditis.

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