15 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 ... streptococci - Culture
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... #culture #negative
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
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
difficile (gut) • Fungi ... : Candida spp. ... (mucosa), Aspergillus ... : Aspergillus spp ... differential #diagnosis #causes
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
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... antibiotics as a cause ... of a negative culture ... Scedosporium, endemic fungi ... Kumfer @AnnKumfer #Culture
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Negative Blood Cultures ... therapy - Number one cause ... of culture negative ... Fungal (Histoplasma/Aspergillus ... patient a surgical candidate
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
fastidious bacteria or fungi ... but important causes ... Tropheryma whipplei, Fungi ... (Aspergillus, Candida ... bacteria) and 18S ( fungi
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,
(SPA) • Other Causes ... Mycobacterial Causes ... M.tuberculosis, M. bovis • Fungi ... : Candida, Cryptococcus ... , Aspergillus, Histoplasma