Sunday, October 12, 2014

Duke Criteria For Infective Endocarditis

Major Criteria:
1. Positive blood culture

  • typical organism in 2 separate cultures or
  • persistently +ve blood culture 
2. Endocardium involved
  • positive echocardiogram  showing vegetations, abscess or dehiscence of prosthetic valves or
  • new valvular regurgitation (change in murmur is not sufficient)
Minor Criteria:
1. Predisposition like cardiac lesion, Iv drug abuse
2. Fever >38C
3. Vascular /Immunological signs
4. Positive blood culture that does not meet major criteria
5. Positive echocardiogram that does not meet major criteria.

Definite infective endocarditis is diagnosed if 2 major OR 1 major and 3 minor OR all 5 minor criteria are met. 

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