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Related Experiment Videos

From trench fever to endocarditis.

P Mann1, F Nye, G Williams

  • 1Aintree Cardiac Centre, University Hospital Aintree, Liverpool, UK. Paul1Mann@aol.com

Postgraduate Medical Journal
|December 5, 2003
PubMed
Summary

A Bartonella quintana infection caused infective endocarditis in a woman, highlighting challenges in diagnosing culture-negative cases. Serological cross-reactivity with Chlamydia spp. can lead to misdiagnosis.

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Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Infective endocarditis is a serious infection of the heart lining or valves.
  • Culture-negative endocarditis presents diagnostic challenges, requiring consideration of atypical pathogens.
  • Bartonella quintana is known to cause trench fever, historically associated with WWI soldiers.

Observation:

  • A case report details a 44-year-old woman diagnosed with infective endocarditis.
  • The causative agent identified was Bartonella quintana.
  • The patient's presentation was characterized as culture-negative endocarditis.

Findings:

  • Bartonella quintana, the cause of trench fever, was identified as the pathogen in infective endocarditis.
  • This case underscores the complexity of diagnosing culture-negative endocarditis.
  • Serological cross-reactivity between Bartonella species and Chlamydia species was observed.

Implications:

  • The findings highlight the importance of considering Bartonella species in the differential diagnosis of culture-negative endocarditis.
  • Awareness of serological cross-reactivity is crucial to prevent misdiagnosis, particularly differentiating between Bartonella and Chlamydia infections.
  • This case contributes to understanding the clinical spectrum of Bartonella quintana infections.

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