7 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
bacilli - Fungi ... (Candida, Aspergillus ... Histoplasma) - Culture ... bacilli - Fungi ... Endocarditis #Bacteria #Pathogens
Fungal Biomarkers: Comparing Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 •
Fungal Biomarkers ... component of many fungi ... Candida, Aspergillus ... febrilepodcast #Fungal ... Galactomannan #diagnosis #comparison
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Blood Cultures ... non-bacterial pathogen ... Fungal (Histoplasma ... /Aspergillus) / ... patient a surgical candidate
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
preparation from culture ... cell response to fungi ... doesn't stain most fungi ... staining #diagnosis #fungi ... #fungus #comparison
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... #negative #Endocarditis ... #CNIE #BCNIE #cardiology
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
component of many fungi ... • Pathogens: Candida ... Coccidioides - Negative ... closely related fungi ... Galactomannan #diagnosis #comparison
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... fastidious bacteria or fungi ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... bacteria) and 18S ( fungi