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Fungal prosthetic valve endocarditis: Mayo Clinic experience with a clinicopathological analysis

Jennifer M Boland1, Heath H Chung, Frans J L Robberts

  • 1Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA. boland.jennifer@mayo.edu

Mycoses
|April 22, 2010
PubMed

Insights

Fungal prosthetic valve endocarditis is a rare but serious condition. Early treatment and lifelong antifungal therapy may improve outcomes for this devastating infection.

Area of Science:

  • Infectious Diseases
  • Cardiology
  • Mycology

Background:

  • Fungal prosthetic valve endocarditis (FPVE) is a rare but severe complication following cardiac valve replacement.
  • Prompt diagnosis and management are crucial due to high morbidity and mortality rates.

Purpose of the Study:

  • To characterize the clinical presentation, risk factors, and outcomes of FPVE.
  • To identify key diagnostic and therapeutic strategies for FPVE.

Main Methods:

  • Retrospective review of 21 cases of FPVE at Mayo Clinic over 40 years.
  • Analysis of patient demographics, clinical features, causative agents, and treatment outcomes.

Main Results:

  • The average patient age was 65 years, with a 2:1 male predominance.
  • Most cases (57%) occurred within 1 year of prosthetic valve placement, commonly affecting the aortic valve.
  • Candida species and Histoplasma capsulatum were the most frequent pathogens. Despite most patients being immunocompetent, risk factors for fungal infection were present.
  • Pathological evaluation yielded high diagnostic accuracy (92%).
  • FPVE was associated with high complication (67%) and mortality (57%) rates.

Conclusions:

  • FPVE is a devastating disease with significant mortality.
  • Early medical therapy, surgical intervention, and suppresssive antifungal treatment are essential for improving cure rates.
  • Further research into risk stratification and novel therapeutic approaches is warranted.

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