39 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 ... Dracunculiasis - Non-Infectious ... Blastomycosis - Non-Infectious
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
vs Noninfective Causes ... disease • Systemic infection ... • HACEK • Culture-negative ... bacilli • Fungi ... bacilli • Fungi
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Blood culture contaminants ... Grouped by gram negative ... febrilepodcast] #ID #Infectious ... Diseases #Infections ... #Microbiology #
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
Important Fungal ... preparation from culture ... • India ink - "Negative ... #microbiology #microscopy ... #fungus #comparison
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 ... InfectiousDiseases #Microbiology
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Endocarditis (IE) Has Negative ... Blood Cultures ... therapy - Number one cause ... of culture negative ... Fungal (Histoplasma
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... remain negative ... fastidious bacteria or fungi ... but important causes ... Tropheryma whipplei, Fungi
Fusarium on Culture and Microscopy
Collecting a sample for culture from the eye is never fun, but
Fusarium on Culture ... but a positive fungal ... culture from an ... Eye infections are ... Microscopy #clinical #microbiology
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
and sources of infection ... • Native and ... • Soft tissue infections ... Endocarditis #Sources #Causes ... #Differential #Microbiology
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
Positive effluent culture ... Microbiology: • ... • 15-35% Gram negative ... Conncomitant catheter infection ... negative peritonitis