13 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 ... ID #Infectious Diseases ... #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 ... #Culture #Blood ... #Smear #clinical ... #microscopy #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
food, salad bar Clinical ... Gastroenteritis) • PCR ... available • Blood ... disease) • CSF ... infectiousdiseases #treatment #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
food, salad bar Clinical ... Gastroenteritis) • PCR ... available • Blood ... disease) • CSF ... infectiousdiseases #treatment #microbiology
Capnocytophaga Canimorsus Skin Rash

40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
recently installed air ... fastidious gram-negative ... Myocarditis & culture-negative ... is difficult to culture ... University Infectious Diseases
Diagnosing Brucellosis
Epidemiological Exposures
- Endemic Regions
- Clinical Micro Lab Technicians
- Animal/Vaccine Exposure: Vets, Slaughterhouse workers, hunters
- Unpasteurized
Micro Lab Technicians ... Diagnostics: Culture ... (blood, bone marrow ... SAT, ELISA), 16S PCR ... Brucellosis #Diagnosis #Criteria
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... after 3 separate blood ... negative for 7 ... antimicrobials, clinical ... exists Infectious Diseases
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... • Coagulase-negative ... • Blood cultures ... -> TEE • Duke Criteria
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Interpretation of Positive Blood ... Remember that clinician ... call from the micro ... Interpretation #Laboratory ... #Microbiology #
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... Negative: • Bartonella ... Diagnosis: • Blood ... → TEE • Duke Criteria