167 results
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Histoplasma) - Culture ... streptococci - Culture ... #Differential #InfectiousDiseases
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood culture ... identified with modern culture ... diagnosis #causes #culture ... #Endocarditis #InfectiousDiseases
Coverage of common antibiotics used in the hospital

For empiric coverage, first define the type of infection,
then review prior cultures ... Obtain cultures ... #management #infectiousdisease
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 ... diagnosis #management #infectiousdiseases
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 ... diagnosis #management #infectiousdiseases
Papillary Muscle Rupture on POCUS

See the "cracking whip"?  This is what papillary muscle rupture looks
Papillary Muscle Rupture ... on POCUS See ... papillary muscle rupture ... Papillary #Muscle #Rupture ... Echocardiogram #POCUS
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Coccidiomycosis - Diagnosis
Diagnosis:
 • Mildly elevated peripheral WBC, Eosinophilia (25%), Elevated ESR, Procalcitonin normal (95%)
 •
-8%), Empyema (rupture ... immunodiffusion test) • Culture ... 7 days to grow culture ... Diagnosis #workup #infectiousdiseases
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
having positive cultures ... including blood cultures ... sensitivity of 67% for culture ... sensitivity of 48% for culture ... CBC #hematology #pathophysiology
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... of a negative culture ... Kumfer @AnnKumfer #Culture ... Differential #Diagnosis #InfectiousDiseases
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... separate blood cultures ... identified with modern culture ... - Standard culture ... differential #workup #infectiousdiseases