ToolsCalculators
Modified Duke Criteria for Infective Endocarditis
Classifies suspected endocarditis as definite, possible, or rejected.
Modified Duke Criteria for Infective Endocarditis
Major: typical positive blood cultures for IE
Major: evidence of endocardial involvement (echo/new regurgitation)
Minor: predisposing heart condition or IV drug use
Minor: fever >=38 C
Minor: vascular phenomena
Minor: immunologic phenomena
Minor: microbiological evidence not meeting a major criterion
ResultRejected
Criteria for infective endocarditis are not met.
- Major criteria
- 0
- Minor criteria
- 0
When to use
- Classifying the likelihood of infective endocarditis in a suspected case.
Formula
Definite: 2 major, or 1 major + 3 minor, or 5 minor. Possible: 1 major + 1 minor, or 3 minor. Otherwise rejected.
Pearls and pitfalls
- Pathologic criteria (positive vegetation histology/culture) independently confirm definite IE.
- Two major criteria: typical positive cultures and echocardiographic endocardial involvement.