21. Cardio infections-1 Flashcards
Of the following choices which is a Positive Diagnostic via the Duke criteria?
A. Positive blood culture, History IV drug use, Janeway Lesions , rheumatoid factor
B. Echo with oscillating intracardiac mass, Osler Nodes, Roth Spots
C.Osler Nodes, Roth Spots, Janeway Lesions Glomerulonephritis
D.Pulmonary infarct, History predisposing heart condition, Temp above 100.4 F, arterial emboli.
E. Positive blood culture, History of Predisposing heart conditions
RFA
ANS. A By the Duke Criteria a Diagnonist need 2 major and 0 minor, 1 Major and 3 minor or 0 Major and 5 Minor
The major are a positive blood culture and positive Echo
A has 1 Major and 3 minor
B. 1 Major and 2 Minor
C. 4 minor
D. 4 minor
E. 1 Major 1 Minor
A Patient with a prosthetic heart valve comes to the doctor with fever of 100.7 F Roth spots. Echo is done showing oscillating intracardiac mass. A blood culture comes back positive for a Gram positive, Catalase positive, Mannitol negative organism. What is the most likely infection given the patients history and blood culture.
A. HACEK B. S. Saprophyticus C. S. aureus D. S. lugdunensis E. S. epidermidis
RFA
Ans. E. S. epidermidis is associated with prosthetic valve endocarditis and since the test is mannitol negative it eliminates the other major Prosthetic valve IE organism (C.) S. aureus
A patient with a prosthetic valve that was placed 7 years ago presents to the clinic with retinal spots, lesions on her fingers and toes, and splinter hemorrhages under her nail beds. She has been an IV user of heroin for the last 10 years. Which valve is most likely affected by her bacterial endocarditis? (MG)
A. Aortic
B. Pulmonary
C. Mitral
D. Tricuspid
D. Tricuspid
IV drug use
Which of the below organisms is most likely to grow when culturing an endocarditis patient? (MG)
A. Actinobacillus B. Eikenella C. Kingella D. Cardiobacterium E. Haemophilus F. Staphylococcus
F. Staphylococcus
All others are HACEK which are very difficult to grow in culture
