24 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 vs gram ... #Infections #Microbiology ... #Bloodculture #Bloodcx
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Interpretation of Positive Blood ... (+) cocci, Gram( ... rods, Gram(–) cocci ... Gram(+) cocci are ... Interpretation #Laboratory #Microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Monocytogenes - Gram-positive ... available • Blood ... culture (Invasive ... infectiousdiseases #treatment ... #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Monocytogenes - Gram-positive ... available • Blood ... culture (Invasive ... infectiousdiseases #treatment ... #microbiology
Abiotrophia defectiva on Blood Culture and Microscopy
 - only growing on Chocolate Agar
 - Gram pos
Abiotrophia defectiva on Blood ... Chocolate Agar - Gram ... pos cocci in chains ... clinical #microscopy #microbiology ... #culture
Coccidiomycosis - Diagnosis
Diagnosis:
 • Mildly elevated peripheral WBC, Eosinophilia (25%), Elevated ESR, Procalcitonin normal (95%)
 •
trend response to treatment ... immunodiffusion test) • Culture ... 7 days to grow culture ... system • Urine & Blood ... Beta D Glucan in blood
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram ... test • PCR • Culture ... danger of aerosol) Treatment ... first line of treatment ... Chlamydia #psittaci #microbiology
Bacteremia Quick Reference - Treatment Duration

Gram Negative Bacteremia:
 • Avoid: Aminoglycosides and tigecycline
 • Catheters should
Quick Reference - Treatment ... Duration Gram ... required Gram ... - Follow-up blood ... #Bacteremia #Treatment
Streptocccus Pneumoniae
Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative
Epidemiology - 10% adult carriers:
 • Most common cause of:
Streptocccus Pneumoniae Microbiology ... : Gram Positive, ... sinus • Sputum culture ... Specificity of 97%) Treatment ... Pneumoniae #strep #microbiology
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
Acinetobacter baumanii on culture ... variable on gram ... violet esp. from blood ... clinical #microscopy #microbiology ... #culture