Fungal endocarditis following cardiac surgery

Area of Science:

• Cardiology
• Infectious Diseases
• Surgical Pathology

Background:

• Fungal endocarditis is a rare but serious complication following cardiac surgery.
• Prosthetic valves and homografts are susceptible to fungal infections.
• Candida and Aspergillus species are common causative agents.

Purpose of the Study:

• To analyze the incidence, clinical features, and outcomes of fungal endocarditis after cardiac valve surgery.
• To evaluate the effectiveness of current treatment strategies.

Main Methods:

• Retrospective analysis of fungal endocarditis cases following cardiac surgery between January 1994 and December 1997.
• Review of patient demographics, causative fungal species, affected valve type, clinical presentation, diagnostic methods, and treatment outcomes.

Main Results:

• Eight cases of fungal endocarditis were identified among 887 prosthetic and 114 homograft valve replacements.
• Candida species (n=5) and Aspergillus species (n=3) were the main pathogens.
• Aortic homografts (n=4) were most frequently involved, followed by mitral prosthesis (n=2), aortic prosthesis (n=1), and a Goretex patch (n=1).
• Seven patients presented with early endocarditis, characterized by fever; two had embolic events.
• Positive blood cultures and echocardiographic vegetations were observed in seven patients.
• Despite amphotericin B and repeat surgery, six patients (75%) had a fatal outcome.

Conclusions:

• Fungal endocarditis post-cardiac surgery carries a high mortality rate.
• Aggressive management with antifungal agents and early surgical intervention offers limited survival benefit.
• Further research into novel therapeutic approaches is warranted.