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Bacillus cereus endocarditis in native aortic valve

H A Ngow1, W M N Wan Khairina

  • 1Internal Medicine Department, Kulliyyah of Medicine, International Islamic University Malaysia, P.O. Box 141, Kuantan, Pahang Darul Makmur, Malaysia. harrisngow@gmail.com

Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy
|May 26, 2012
PubMed

Insights

Bacillus cereus endocarditis is a rare infection, particularly affecting native valves. This case highlights a unique instance in a former intravenous drug user with severe aortic regurgitation.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Bacillus cereus endocarditis is infrequently documented.
  • It is often associated with immunocompromised states, intravenous drug use, or prosthetic cardiac devices.
  • Native valve involvement is exceptionally rare.

Observation:

  • A 31-year-old male with a history of intravenous drug use and previous staphylococcal endocarditis presented with heart failure symptoms.
  • Echocardiography revealed severe aortic regurgitation and a vegetation on the aortic valve's right coronary cusp.
  • Blood cultures confirmed the presence of Bacillus cereus.

Findings:

  • The study reports a rare case of native aortic valve endocarditis caused by Bacillus cereus.
  • This presentation occurred in a patient with significant risk factors for infective endocarditis.

Implications:

  • This case expands the known spectrum of Bacillus cereus as a causative agent of endocarditis.
  • It underscores the importance of considering Bacillus cereus in cases of endocarditis, even in native valves.
  • Clinicians should maintain a high index of suspicion in at-risk populations.

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