Pathology Flashcards
What is stenosis?
failure of valve to open completely
What is insufficiency or regurgitation
Failure of valve to close completely
What are causes for stenosis
What are the causes of insufficiency?
Why is mitral valve prolapse associated with Marfan syndrome?
Fibrillin-1
Describe mitral valve prolapse?
Ballooning of the valvular cusps and Myxoid (jelly-like substance) degeneration of valve leaflets
What is the cause of rheumatic fever?
Abnormal immune response to grp A strep pharyngitis
What is the pathogenesis of rheumatic fever?
Immune response to strep antigens crossreact with host proteins
How to diagnose rheumatic fever?
JONES criteria
What is the term for inflammation of all 3 layers of the heart due to acute rheumatic heart disease
Pancarditis
What is in Aschoff bodies?
- T cells
- Plasma cells
- Aschoff giant cells
- Activated macrophage (caterpillar cell/ Anitschkow cell)
Which valves are mostly affected in rheumatic heart disease
Mitral valve
What factors are considered to determine if infective endocarditis is acute or subacute
What is infective endocarditis
How is infective endocarditis diagnosed
Duke criteria
Common ways to get infective endocarditis are …
IV drug addicts, open heart surgery, septicaemia
What are the organisms involved in infective endocarditis?
What can predispose to infective endocarditis?
What are complications of infective endocarditis?
Which group of patients get Nonbacterial thrombotic endocarditis?
Cancer/ sepsis
What can be seen in nonbacterial thrombotic endocarditis?
Small, non-infective, platelet-rich vegetation of heart valves
What are the complications of heart valvular disease?