54 results
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 ... Kumfer @AnnKumfer #Culture ... Differential #Diagnosis #InfectiousDiseases
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
Important Fungal ... and chitin in fungal ... preparation from culture ... polysaccharide component ... of fungal cell
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 ... #culture #negative ... #Endocarditis #InfectiousDiseases
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
ß-D-glucan: • Most fungi ... Glucan-containing gauzes ... Specificity #Laboratory #InfectiousDiseases ... #Diagnosis #Fungus ... #Fungi #Fungal
Differential diagnosis of Skin + Eye infections
 • Bacterial: Staph spp, Strep spp, Pseudomonas spp, Bartonella,
VZV, CMV, HIV • Fungal ... #eye #ocular #dermatology ... #InfectiousDiseases ... Diagnosis #viral #fungal
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Negative Blood Cultures ... antibiotics prior to cultures ... therapy - Number one cause ... of culture negative ... Fungal (Histoplasma
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Gram-negative bacilli - Fungi ... Histoplasma) - Culture ... Gram-negative bacilli - Fungi ... streptococci - Culture ... #Differential #InfectiousDiseases
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 ... bacteria) and 18S ( fungi ... differential #workup #infectiousdiseases
Age-Focused Initial Evaluation for Pyoderma Gangrenosum 

All Patients: 
 - A thorough history and physical examination
biopsy with tissue culture ... (bacterial, fungal ... Evaluation #Age #Dermatology
Tinea Versicolor: Scaly well demarcated patches caused by fungal skin infection.

Charlie Goldberg, M.D. - UCSD Catalog
demarcated patches caused ... by fungal skin ... Clinical #Photo #Dermatology