30 results
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
Capnocytophaga Canimorsus ... gram-negative bacillus ... Myocarditis & culture-negative ... infection, because ... infection should
Capnocytophaga
Pathogen: Capnocytophaga
 • 9 species, C. canimorsus responsible for the majority of infections
 • Gram-negative rod,
9 species, C. canimorsus ... infections • Gram-negative ... microorganism (Culture ... fusiform gram-negative ... #canimorsus #microbiology
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 ... #Infections #Microbiology ... #Micro #Differential
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
Capnocytophaga spp ... anaerobe; narrow Gram negative ... richdavisphd #Capnocytophaga ... #Smear #clinical ... #microscopy #microbiology
Capnocytophaga
GNR with long fusiform shape.  Fastidious facultative anaerobe that grows slowly and needs enriched agar
C.
Capnocytophaga GNR ... cats) Classic clinical ... #Infection #Diagnosis ... #Cats #Dogs #Microbiology ... #CAnimorsus
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
Duke's Criteria for Infective ... demonstrated by culture ... Immunologic phenomena • Micro ... evidence of active infection ... Duke #criteria #Infective
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... negative infective ... diagnosis #causes #culture ... #negative #Endocarditis ... InfectiousDiseases #Microbiology
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... remain negative ... antimicrobials, clinical ... #BloodCulture #Negative
How to Determine a Contaminant vs True Infection 

What is the organism? Most 
common contaminants:
Contaminant vs True Infection ... • Coagulase-negative ... How many blood culture ... species from the micro
Differentiating NBTE from Infective Endocarditis
No pathognomonic signs/symptoms or echo features that are specific to NBTE, and
Differentiating NBTE from Infective ... high index of clinical ... serology: Serial negative ... Frequent false-negative ... /serology: + (Negative