17 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Gram-negative bacilli - Fungi ... (Candida, Aspergillus ... Histoplasma) - Culture ... Gram-negative bacilli - Fungi ... #Endocarditis #Bacteria
Morphology and Descriptions of Fungal Infections with Hyphae or Pseudohyphae in Tissues
Yeasts with Pseudohyphae: 
 •
Consistent with Candida ... other hyaline fungi ... with dematiaceous fungi ... #fungi #infections ... septations #pathology #atlas
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
difficile (gut) • Fungi ... : Candida spp. ... Adenovirus, RSV • Fungi ... : Aspergillus spp ... reactivation), RSV • Fungi
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... under BCNIE, these bacteria ... #CNIE #BCNIE #cardiology
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
have a fastidious bacteria ... this be a non-bacterial ... 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 ... exceptions are Aspergillus ... staining #diagnosis #fungi
Morphology and Descriptions of Endemic Fungal Infections with Yeasts in Tissues
Broad-based budding yeasts:
 • Description: Broad-based
Cryptococcus, and Aspergillus ... other hyaline fungi ... with dematiaceous fungi ... #fungi #infections ... morphology #pathology #atlas
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... or fungi (grows ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... ) and 18S ( fungi
Morphology and Descriptions of Endemic Fungal Infections with Yeasts in Tissues
Broad-based budding yeasts:
 • Description: Broad-based
Descriptions of Endemic Fungal ... Cryptococcus, and Aspergillus ... swinndong #endemic #fungal ... pathology #clinical #atlas ... #fungi #microbiology
Alternaria on Culture Plate and Microscopy
Adult w/ aplastic anemia, getting regular blood product infusions. Had Group
Plate and Microscopy ... Group B Strep bacteremia ... Also had blood fungal ... environmental fungi ... #Microscopy #clinical