39 results
Abiotrophia defectiva on Blood Culture and Microscopy
 - only growing on Chocolate Agar
 - Gram pos
Abiotrophia defectiva on Blood ... Culture and Microscopy ... defectiva #clinical #microscopy ... #microbiology # ... culture
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... identified with modern culture ... #differential #diagnosis ... #causes #culture
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
for Infective Endocarditis ... demonstrated by culture ... culture - ... culture for Coxiella ... #diagnosis #major
Endocarditis - Duke Criteria - Major and Minor

MAJOR CRITERIA: 
 - Persistently +ve blood culture for
Endocarditis - Duke ... Persistently +ve blood ... culture for typical ... cultures that do ... #Major #Minor #Diagnosis
Endocarditis checklist
Initial evaluation
 • Peripheral blood cultures (three sets at three different sites)
 • Additional culture
Endocarditis checklist ... • Peripheral blood ... • Additional culture ... culture daily ( ... #criticalcare #diagnosis
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... ) Has Negative Blood ... Number one cause of culture ... #Infective #Endocarditis ... BloodCultures #Diagnosis
Streptobacillus moniliformis on peripheral smear and culture microscopy
 - blood culture; patient w/ outdoor exposure
 -
peripheral smear and culture ... microscopy - blood ... culture; patient ... #moniliformis #blood ... #microbiology #
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
Capnocytophaga spp on Culture ... culture of leukemia ... Capnocytophaga #Culture ... clinical #microscopy ... #microbiology
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Blood culture contaminants ... #Infections #Microbiology ... Differential #Ddx #Diagnosis
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... 90% of IE cases Culture ... staphylococci Culture ... • Blood cultures