Dukes Criteria For Infective Endocarditis

Question 1

Major criteria

Answer 1

2 separate +ve blood cultures w/ organisms typical of IE (strep viridans, strep bovis, HÁČEK group, staph aureus, enterococci)
Echocardiographic evidence of endocardial involvement

Question 2

2 separate +ve blood cultures w/ organisms typical of IE (strep viridans, strep bovis, HÁČEK group, staph aureus, enterococci)

Answer 2

Major

Question 3

Echocardiographic evidence of endocardial involvement

Answer 3

Major

Question 4

Minor criteria

Answer 4

Predisposing heart condition or IV drug use
Temp >38°
Vascular phenomena: major arterial emboli, septic pulmonary infarcts, janeway lesions, haemorrhage
Immunological phenomena: glomerulonephritis, Osler nodes, Roth spots, RF
Microbiological: +ve blood cultures but not meeting major criterion

Question 5

Predisposing heart condition or IV drug use

Answer 5

Minor

Question 6

Temp >38°

Answer 6

Minor

Question 7

Vascular phenomena: major arterial emboli, septic pulmonary infarcts, janeway lesions, haemorrhage

Answer 7

Minor

Question 8

Immunological phenomena: glomerulonephritis, Osler nodes, Roth spots, RF

Answer 8

Minor

Question 9

Microbiological: +ve blood cultures but not meeting major criterion

Answer 9

Minor

Question 10

Requirement for diagnosis

Answer 10

2 major
1 major + 3 minor
5 minor