18 results
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 ... #contaminants
How to Determine a Contaminant vs True Infection 

What is the organism? Most 
common contaminants:
to Determine a Contaminant ... Most common contaminants ... • Coagulase-negative ... How many blood culture ... species from the micro
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
demonstrated by culture ... Definite IE - Clinical ... major clinical criteria ... blood cultures ... Immunologic phenomena • Micro
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
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Positive Blood Cultures ... Remember that clinician ... call from the micro ... reason to go to micro ... Interpretation #Laboratory #Microbiology
Capnocytophaga
Pathogen: Capnocytophaga
 • 9 species, C. canimorsus responsible for the majority of infections
 • Gram-negative rod,
Capnocytophaga ... infections • Gram-negative ... microorganism (Culture ... fusiform gram-negative ... #canimorsus #microbiology
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
fastidious gram-negative ... Myocarditis & culture-negative ... possible Patient's clinical ... is difficult to culture ... #dermatology #clinical
Diagnosing Brucellosis
Epidemiological Exposures
- Endemic Regions
- Clinical Micro Lab Technicians
- Animal/Vaccine Exposure: Vets, Slaughterhouse workers, hunters
- Unpasteurized
Endemic Regions - Clinical ... Micro Lab Technicians ... cheese, ice cream) Clinical ... Diagnostics: Culture ... Brucellosis #Diagnosis #Criteria
Epicoccum purpurascens on culture and microscopy
 - dematiaceous (black) with orange pigment
 - environmental mold found
purpurascens on culture ... mold found in clinical ... essentially always as a contaminant ... #purpurascens #culture ... #clinical #microbiology
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
following): (1) Clinical ... Positive effluent culture ... Microbiology: • ... • 15-35% Gram negative ... negative peritonitis