97 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Gram-negative bacilli - Fungi ... Histoplasma) - Culture ... Gram-negative bacilli - Fungi ... streptococci - Culture
Morphology and Descriptions of Fungal Infections with Hyphae or Pseudohyphae in Tissues
Yeasts with Pseudohyphae: 
 •
other hyaline fungi ... with dematiaceous fungi ... Exophiala spp, Curvularia ... Pseudohyphae #fungal #fungi
Curvularia on Microscopy and Culture Plate
One of the first (and easiest) dematiaceous molds to identify by
Curvularia on Microscopy ... and Culture Plate ... Curvularia is mostly ... richdavisphd #Curvularia ... #microbiology #culture
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... separate blood cultures ... fastidious bacteria or fungi ... Tropheryma whipplei, Fungi ... bacteria) and 18S ( 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 ... identified with modern culture ... diagnosis #causes #culture
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
• HACEK • Culture-negative ... Gram-negative bacilli • Fungi ... Gram-negative bacilli • Fungi
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... of a negative culture ... Scedosporium, endemic fungi ... Kumfer @AnnKumfer #Culture
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
Septic Arthritis: Pathogenesis and clinical findings
Notes:
- Septic Arthritis is typically monoarticular & the knee is involved
& often a +ve culture ... be caused by, fungi
Papillary Muscle Rupture on POCUS

See the "cracking whip"?  This is what papillary muscle rupture looks
Papillary Muscle Rupture ... on POCUS See ... papillary muscle rupture ... Papillary #Muscle #Rupture ... Echocardiogram #POCUS