78 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Responsible for Infective ... Histoplasma) - Culture ... negative #Infective ... Bacteria #Pathogens #Diagnosis ... #Differential #InfectiousDiseases
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
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
negative infective ... #differential #diagnosis ... #negative #Endocarditis ... #InfectiousDiseases ... #Microbiology #
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 ... #zoonotic #infectiousdiseases
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
My Patient with Infective ... Blood Cultures ... negative IE - ... Ahmed_HBabiker #Infective ... BloodCultures #Diagnosis
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Endocarditis Algorithm - Infective ... disease • Systemic infection ... • HACEK • Culture-negative ... epidermidis • Gram-negative ... #Differential #Diagnosis
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
developing active infection ... • Tuberculosis infection ... TB AFB smear microscopy ... Mycobacterial culture ... LatentTB #ActiveTB #InfectiousDiseases
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Diagnosis: ... • Stool culture ... ) • CSF (CNS Infection ... #management #infectiousdiseases ... #treatment #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Diagnosis: ... • Stool culture ... ) • CSF (CNS Infection ... #management #infectiousdiseases ... #treatment #microbiology
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... remain negative ... BCNIE Diagnostic ... #diagnosis #differential ... #workup #infectiousdiseases