17 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Gram-negative bacilli - Fungi ... (Candida, Aspergillus ... Histoplasma) - Culture ... streptococci - Culture ... #Endocarditis #Bacteria
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
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
Pre-transplant: • Common bacteria ... difficile (gut) • Fungi ... : Candida spp. ... (mucosa), Aspergillus ... : Aspergillus spp
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Negative Blood Cultures ... have a fastidious bacteria ... this be a non-bacterial ... Fungal (Histoplasma/Aspergillus ... patient a surgical candidate
Morphology and Descriptions of Fungal Infections with Hyphae or Pseudohyphae in Tissues
Yeasts with Pseudohyphae: 
 •
Consistent with Candida ... spp. however Aspergillus ... other hyaline fungi ... with dematiaceous fungi ... septations #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
Cryptococcus, and Aspergillus ... other hyaline fungi ... with dematiaceous fungi ... yeasts #fungal #fungi ... morphology #pathology #atlas
Morphology and Descriptions of Endemic Fungal Infections with Yeasts in Tissues
Broad-based budding yeasts:
 • Description: Broad-based
Coccidioides spp, Candida ... Cryptococcus, and Aspergillus ... , Histoplasma, Candida ... pathology #clinical #atlas ... #fungi #microbiology
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
• Most common bacterial ... M.tuberculosis, M. bovis • Fungi ... : Candida, Cryptococcus ... , Aspergillus, Histoplasma
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
component of many fungi ... • Routine use: Candida ... , Aspergillus. ... Infections with certain bacteria ... closely related fungi