Clinical considerations regarding infective Libman-Sacks endocarditis

Area of Science:

• Cardiology
• Infectious Diseases
• Rheumatology

Background:

• Libman-Sacks endocarditis is a non-bacterial thrombotic endocarditis associated with autoimmune diseases, particularly systemic lupus erythematosus (SLE).
• Infective endocarditis (IE) involves microbial infection of the heart valves or endocardium, often requiring prompt antibiotic treatment.

Observation:

• A case presentation of a patient with a history of Libman-Sacks endocarditis who subsequently developed aortic infective endocarditis.
• The causative organism identified was Hemophilus paraphrophilus, a bacterium not commonly associated with severe endocarditis.

Findings:

• This case demonstrates a rare occurrence of Hemophilus paraphrophilus causing aortic infective endocarditis in an immunocompromised patient with a history of Libman-Sacks endocarditis.
• The clinical course and management underscore the potential for unusual pathogens in patients with underlying autoimmune conditions and cardiac involvement.

Implications:

• The findings suggest a need for heightened awareness and potentially revised antibiotic prophylaxis strategies for patients with systemic lupus erythematosus, especially those with a history of Libman-Sacks endocarditis.
• This case contributes to the understanding of infective endocarditis in the context of autoimmune disease, emphasizing the importance of considering a broad spectrum of pathogens.