17 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 ... Ddx #Diagnosis #Bloodculture
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
Blood Culture Collection Algorithm - Adult Patients with Suspected Systemic Infection 

Pawlowicz et al evidenced based
Blood Culture Collection ... who meet SIRS criteria ... infections, whose clinical ... #Management #BloodCultures ... #Indications #Criteria
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
How to Determine a Contaminant vs True Infection 

What is the organism? Most 
common contaminants:
• Coagulase-negative ... How many blood culture ... species from the micro ... Jennifer Babik #BloodCultures
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
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... remain negative ... antimicrobials, clinical ... ID_fellows #BCNIE #BloodCulture ... #Negative #Infective
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
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Remember that clinician ... call from the micro ... reason to go to micro ... VarunPhadke2 #BloodCultures ... Interpretation #Laboratory #Microbiology