CVS MICROBIOLOGY

Question 1

Infective endocarditis?

Answer 1

Inflammation of endocardium that lines the surface of cardiac valves; usually due to bacterial infection

Question 2

What villains is the most common overall cause of endocarditis?

Answer 2

Streptococcus viridans
Seen in previously damaged valves chronic rheumatic heart disease ad mitral valve prolapse

Question 3

Results in small vegetation that do not destroy the valve

Answer 3

Subacute endocarditis

Question 4

______________The most common cause in IV drug abuser

Answer 4

Staphylococcus aureus

Question 5

Staph aureus most commonly infect ______

Answer 5

Normal valve and high virulent organism

Question 6

____________ is associated with endocarditis in patient with underlying colorectal carcinoma

Answer 6

Steptococcus bovis

Question 7

___________organisms are associated with endocarditis with negative blood cultures

Answer 7

HACEK (Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, Kingella

Question 8

What are the Clincial features of bacterial endocarditis

Answer 8

Fever - due to bacteremia
Murmur - due to vegetations on heart valves
Jane way lesions ( erythematous non tender lesion on palms and soles
Anemia of chronic disease - due to chronic inflammation

Question 9

Nonbacterial thrombotic endocarditis

Answer 9

Sterile vegetation’s arise in association with hypercoaguable state or underlying adenocarcinoma. Resulting in mitral regurgitation

Question 10

Libyan Sacks endocarditis is due to

Answer 10

Sterile vegetations arise from SLE resulting in mitral regurgitation