27 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 ... • Coagulase-negative ... ) How many blood ... culture sets are ... species from the 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 ... #Culture #Blood ... clinical #microscopy #microbiology
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Interpretation of Positive Blood ... Cultures I arrange ... call from the micro ... reason to go to micro ... Interpretation #Laboratory #Microbiology
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Endocarditis (IE) Has Negative ... Blood Cultures ... antibiotics prior to cultures ... negative IE - ... BloodCultures #Diagnosis #Management
Capnocytophaga
Pathogen: Capnocytophaga
 • 9 species, C. canimorsus responsible for the majority of infections
 • Gram-negative rod,
infections • Gram-negative ... microorganism (Culture ... fusiform gram-negative ... #canimorsus #microbiology ... infectiousdiseases #diagnosis #management
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... diagnosis #causes #culture ... #negative #Endocarditis ... InfectiousDiseases #Microbiology
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup and Management ... CMV qPCR (Serum/Blood ... Bacterial culture ... above testing negative ... Diarrhea #Workup #Management
Bacteremia Quick Reference - Treatment Duration

Gram Negative Bacteremia:
 • Avoid: Aminoglycosides and tigecycline
 • Catheters should
Duration Gram Negative ... - Follow-up blood ... cultures are negative ... therapy (if repeated blood ... Bacteremia #Treatment #Management
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Diagnosis: • Stool culture ... available • Blood ... culture (Invasive ... Monocytogenes #diagnosis #management ... infectiousdiseases #treatment #microbiology