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Infective endocarditis caused by Finegoldia magna following aortic dissection repair: a case report and data

Khetam Hussein1, Ziv Savin2, Liran Shani2

  • 1Infectious Disease Unit, Rambam Health Care Campus, Haifa, Israel.

The American Journal of Case Reports
|December 18, 2014
PubMed
Abstract

Insights

Finegoldia magna (F. magna) is a rare cause of infective endocarditis (IE). Tissue cultures, not blood cultures, were key for diagnosing this prosthetic valve IE case.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Microbiology

Background:

  • Finegoldia magna (F. magna) is an infrequent pathogen implicated in infective endocarditis (IE).
  • Literature documents only seven previously reported cases of F. magna IE.

Observation:

  • A 45-year-old male developed F. magna IE two months post-Bentall procedure.
  • Clinical presentation included fever, dyspnea, and chest pain.
  • Transesophageal echocardiogram revealed prosthetic valve findings, including a vegetation.

Findings:

  • Blood cultures were initially sterile, complicating diagnosis.
  • Tissue cultures from the infected area during reoperation were positive for F. magna.
  • Antibiotic susceptibility testing guided treatment with piperacillin/tazobactam.

Implications:

  • This case highlights the diagnostic challenge of F. magna IE, particularly prosthetic valve involvement.
  • Tissue cultures are crucial for definitive microbiologic diagnosis when blood cultures are negative.
  • Prompt diagnosis and targeted antibiotic therapy are essential for managing rare IE pathogens.

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