dimanche 29 mars 2015

Cas du 29/03/2015: A prosthetic mitral valve mass


Presentation: A patient had a MVR (replacement) several years ago and is asymptomatic but had this echo loop.




#1: What is the definition of endocarditis?
#2: What is the diagnosis?
 





















Explanation:
The definition of endocarditis requires one of three following requirements being met:
 (Duke Criteria)
1 - Two major criteria are present
2 - One major and three minor criteria are met
3 - Five minor criteria are met

Major Citeria
1. Positive Blood Culture for Infective Endocarditis
2. Evidence of Endocardial Involvement
  • oscillating intracardiac mass on valve or supporting structures, in the path of regurgitant jets,
    or on implanted material in the absence of an alternative anatomic explanation, or
  • abscess, or
  • new partial dehiscence of prosthetic valve
  • new heart murmur

Minor Criteria
1. Predisposition: Predisposing heart condition or intravenous drug use
2. Fever: temperature > 38.0 ° C (100.4 ° F)
3. Vascular Phonomena: major arterial emboli, septic pulmonary infarcts, mycotic aneurysm, intracranial hemorrhage, conjunctival hemorrhages, and Janeway lesions
4. Immunologic Criteria: glomerulonephritis, Osler's nodes, Roth spots, and rheumatoid factor
5.Microbiological Evidence: positive blood culture but does not meet a major criterion as noted above or serological evidence of active infection with organism consistent with IE
6. Echocardiographic Findings: consistent with IE but do not meet a major criterion as noted above

The patient does not meet the above criteria so this mass is a thrombus.

 

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