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Related Experiment Videos

Surgery for active, culture negative endocarditis.

Makiko I Hasegawa1, Shunei Kyo, Haruhiko Asano

  • 1Department of Cardiovascular Surgery, Saitama Medical School, Iruma-gun, Saitama 350-0495, Japan.

Asian Cardiovascular & Thoracic Annals
|December 9, 2004
PubMed
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Culture negative infective endocarditis (CNE) remains a frequent challenge. Despite comparable mortality to culture-positive cases, CNE shows higher recurrence rates, impacting patient outcomes.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Medical Microbiology

Background:

  • Culture negative infective endocarditis (CNE) presents significant therapeutic difficulties.
  • CNE remains prevalent, with causative organisms unidentified in 34.8% of surgically treated patients.

Purpose of the Study:

  • To evaluate pre- and perioperative conditions and clinical outcomes of surgically treated CNE patients.
  • To compare CNE outcomes with culture-positive infective endocarditis and Staphylococcal endocarditis.

Main Methods:

  • Retrospective evaluation of 132 surgically treated infective endocarditis patients.
  • Analysis of clinical data, including diagnosis time, valve involvement, functional class, complications, and outcomes.

Main Results:

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  • Diagnosis of CNE took over 2 months on average, with frequent aortic and mitral valve involvement.
  • NYHA class IV was more common in CNE (61.9%) than culture-positive cases. Complication rates (prosthetic valve endocarditis, periannular abscess, embolism) were similar.
  • In-hospital mortality (14.3%) was comparable to culture-positive endocarditis, but recurrence rates were higher (10.0%).

Conclusions:

  • CNE outcomes are comparable to Staphylococcal endocarditis in some aspects and worse than overall culture-positive endocarditis.
  • Higher recurrence rates in CNE necessitate careful long-term management and follow-up.
  • Pre-treatment with antibiotics often hinders microbiological diagnosis, highlighting the need for optimized diagnostic protocols.