Pathology of Valvular Heart Disease Flashcards
What population is most at risk for acute rheumatic fever?
Children 5-15yo
What clinical symptoms are associated with acute rheumatic fever?
STREP - Syndenham’s chorea, transitory migratory arthritis, rheumatic subcutaneous nodules, erythema marginatum, pancarditis
What are Janeway lesions?
Associated with infective endocarditis, non-tender lesions of the soles and palms from microemboli
What population is most affected by mitral valve prolapse?
Young women, 20-40yo
What pathogen is most associated with infective endocarditis in patients with a prosthetic heart valve?
Staph epidermidis
True/False. Aschoff bodies are present in chronic rheumatic fever.
False - they are rarely seen in chronic rheumatic fever. Increased vascularity and lymphocytic infiltrates are commonly present.
What pathogen is most associated with subacute endocarditis?
Strep viridans
Fish-mouth deformity describes the gross appearance of what valve pathology?
Chronic rheumatic fever - due to fibrous thickening of the valve leaflets
True/False. Nonbacterial thrombotic endocarditis does not elicit an inflammatory response.
True - only thrombi are present
Acute rheumatic carditis involves all layers of the heart. What histologic findings are present?
Aschoff bodies - fibrinoid necrosis surrounded by monocytes
Anitschkow cells - histiocytes with vesicular nuclei located within Aschoff bodies
What is the most common valvular abnormality?
Acquired aortic stenosis
What type of murmur presents in calcific aortic stenosis?
High-pitched systolic murmur
Marfan’s syndrome is most associated with what valvular disorder?
Mitral valve prolapse
These are tender subcutaneous nodules in the pulp of digits associated with infectious endocarditis.
Osler nodes
True/False. If a patient is unable to take an anticoagulant, a bioprosthetic valve replacement is a better choice.
True - this is compared to use of a mechanical valve which is likely to cause hemolysis