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Abstract:
The clinical, laboratory, and histopathological features of seven cases of Aspergillus fumigatus prosthetic valve endocarditis are presented. The exact nature of the lesion, a combination of infective fungal endocarditis and thrombosis on the prosthetic valve, is discussed and the difficulties in clinical diagnosis are emphasized. Helpful indications were sudden unexplained heart failure with the appearance of new murmurs, and emboli to large or medium-sized systemic arteries. Fever and anaemia were inconstant, and in no case was blood culture or precipitin investigation helpful. Spore contamination of operating theatre air was the likely source of infection, and measures taken to overcome this and other predisposing factors are discussed. Since medical diagnosis is usually late and the few reported cures in this condition have included replacement of the prosthesis, early surgical intervention combined with antifungal chemotherapy is advised.
Insights
Aspergillus fumigatus prosthetic valve endocarditis is challenging to diagnose, often presenting as heart failure or arterial emboli. Early surgical intervention with antifungal drugs is recommended for better outcomes.
Area of Science:
- Infectious Diseases
- Cardiology
- Mycology
Background:
- Prosthetic valve endocarditis (PVE) poses significant clinical challenges.
- Aspergillus fumigatus is a rare but serious cause of PVE.
- Diagnosis and management of fungal PVE remain difficult.
Purpose of the Study:
- To present clinical, laboratory, and histopathological findings of Aspergillus fumigatus PVE.
- To discuss the nature of the lesions and diagnostic challenges.
- To recommend optimal treatment strategies.
Main Methods:
- Retrospective case series analysis of seven patients with Aspergillus fumigatus PVE.
- Review of clinical presentations, laboratory results, and histopathology.
- Evaluation of diagnostic indicators and treatment outcomes.
Main Results:
- Common presentations included sudden heart failure and systemic arterial emboli.
- Fever and anemia were inconsistent findings.
- Blood cultures and precipitin tests were not helpful in diagnosis.
- Operating theatre air contamination was the suspected source of infection.
Conclusions:
- Early diagnosis of Aspergillus fumigatus PVE is often delayed.
- Surgical replacement of the prosthesis combined with antifungal chemotherapy is advised.
- Preventive measures against spore contamination in operating rooms are crucial.