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Endocarditis due to anaerobic bacteria.

Itzhak Brook1

  • 1Department of Pediatrics, Georgetown University School of Medicine, Washington, DC, USA. ib6@georgetown.edu

Cardiology
|October 10, 2002
PubMed
Summary

Anaerobic bacteria are an uncommon cause of endocarditis, often originating from the GI tract or head and neck. Management involves antibiotics, but mortality remains significant.

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Area of Science:

  • Infectious Diseases
  • Microbiology
  • Cardiology

Background:

  • Endocarditis is an infection of the heart's inner lining, typically caused by bacteria.
  • While facultative anaerobic bacteria are common causes, anaerobic bacteria represent an uncommon yet significant etiology.

Purpose of the Study:

  • To review the microbiology, diagnosis, and management of endocarditis caused by anaerobic bacteria.
  • To highlight specific sources and complications associated with anaerobic endocarditis.

Main Methods:

  • Literature review focusing on anaerobic bacterial endocarditis.
  • Analysis of predisposing factors, clinical presentation, and microbiological sources.
  • Examination of complications, mortality rates, and treatment strategies.

Main Results:

  • Common anaerobic culprits include anaerobic cocci, Propionibacterium acnes, and Bacteroides fragilis group.
  • Specific origins vary: GI tract for B. fragilis, head/neck for Fusobacterium/Bacteroides spp., and head/neck/genitourinary for peptostreptococci.
  • Complications include valvular destruction, mycotic aneurysms, and shock; mortality ranges from 21-43%.

Conclusions:

  • Anaerobic endocarditis requires specific diagnostic and management approaches.
  • Antibiotic therapy targeting these organisms is crucial for treatment.
  • Understanding unique sources and potential complications is vital for patient outcomes.

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