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diagnosis infectiousdiseases management photo treatment endocarditis differential microscopy canimorsus contaminant infection nejm workup bcnie bloodculture bloodcultures contamination derm dermatology flexor
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 ... Bloodculture #Bloodcx #bcx
Duke's Criteria for Infective Endocarditis Definite IE - Pathologic Criteria: • Pathologic lesions - vegetation or intracardiac
Duke's Criteria for Infective ... Immunologic phenomena • Micro ... : + bcxs that do ... evidence of active infection ... Duke #criteria #Infective
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:
Contaminant vs True Infection ... • Coagulase-negative ... How many blood culture ... species from the micro ... Contamination #Diagnosis #BCx
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
Causes of blood culture negative infective endocarditis Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... negative infective ... diagnosis #causes #culture ... #negative #Endocarditis ... InfectiousDiseases #Microbiology
Capnocytophaga Canimorsus Skin Rash 40 M presents w/ N, V, severe epigastric pain. SHx: smoker, drinks 18
fastidious gram-negative ... Myocarditis & culture-negative ... C. canimorsus infection ... is difficult to culture ... infection should
Tuberculosis Testing LATENT TB • LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
result with no clinical ... developing active infection ... • History of BCG ... • Tuberculosis infection ... Mycobacterial culture
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 ... BloodCultures #BCx ... Interpretation #Laboratory #Microbiology
Blood Culture-Negative Infective Endocarditis (BCNIE) Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... remain negative ... antimicrobials, clinical ... #BloodCulture #Negative
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