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Prosthetic valve endocarditis caused by Histoplasma capsulatum
Archives of Internal Medicine
|October 1, 1981
Summary
This study highlights a case of Histoplasma capsulatum infection in a prosthetic mitral valve, diagnosed via serology years before surgical detection. Early serologic diagnosis aids in managing this rare fungal endocarditis.
Area of Science:
- Mycology
- Infectious Diseases
- Cardiology
Background:
- Histoplasma capsulatum (H. capsulatum) fungal infections can affect prosthetic heart valves.
- Diagnosis of H. capsulatum endocarditis is often delayed, with many cases first identified post-mortem.
Observation:
- A patient with H. capsulatum infection was diagnosed using serologic tests 1.5 years prior to prosthetic mitral valve involvement being confirmed during surgery.
- Initial attempts to detect H. capsulatum through cultures and biopsies of bone marrow and liver were negative.
Findings:
- Serologic tests proved crucial for diagnosing H. capsulatum endocarditis and monitoring treatment effectiveness in this patient.
- The management of this case was compared to 29 previously documented instances of H. capsulatum endocarditis.
Implications:
- This case underscores the utility of serologic testing for early diagnosis of H. capsulatum prosthetic valve endocarditis.
- Timely serologic diagnosis can facilitate earlier intervention and potentially improve outcomes for patients with fungal endocarditis.