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Stomatococcus mucilaginosus endocarditis.

J Prag, E Kjøller, F Espersen

    European Journal of Clinical Microbiology
    |August 1, 1985
    PubMed
    Summary
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    This case report details a rare instance of endocarditis caused by Stomatococcus mucilaginosus, a bacterium that typically adheres to surfaces. Despite susceptibility, the patient experienced a slow response to antibiotic therapy for this heart valve infection.

    Area of Science:

    • Cardiology
    • Infectious Diseases
    • Microbiology

    Background:

    • Endocarditis is a serious infection of the heart valves, often caused by Staphylococcus or Streptococcus species.
    • Spontaneous, non-nosocomial endocarditis cases require thorough etiological investigation.
    • Prolapsed mitral valves represent a potential risk factor for developing infective endocarditis.

    Observation:

    • A unique case of spontaneous endocarditis was observed in a patient with a prolapsed mitral valve.
    • The causative agent identified was Stomatococcus mucilaginosus, a gram-positive coccus.
    • The infection was non-nosocomial, indicating community acquisition.

    Findings:

    • Stomatococcus mucilaginosus demonstrated high in vitro susceptibility to antibiotics.

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  • Clinical response to antibiotic treatment was notably slow, despite in vitro susceptibility.
  • Distinctive microbiological features, including strong colony adherence and weak/absent catalase activity, differentiated it from staphylococci and micrococci.

    • Implications:

    • This case highlights Stomatococcus mucilaginosus as a potential, albeit rare, cause of native valve endocarditis.
    • The discrepancy between in vitro susceptibility and slow clinical response warrants further investigation into treatment strategies for such infections.
    • Understanding the unique adherence and enzymatic properties of Stomatococcus mucilaginosus may inform future diagnostic and therapeutic approaches in endocarditis.