75 results
Stool Cultures - Indications in Diarrhea
Patient Categories to Order Stool Cultures On:
 • Persisting 1 week
IBD, age > 70, pregnant ... outbreak) Few infectious ... causes of acute ... 196 (1.5%) had a positive ... #Indications #diagnosis
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Monocytogenes - Gram-positive ... • CNS infection ... Diagnosis: ... • Stool culture ... ) • CSF (CNS Infection
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Monocytogenes - Gram-positive ... • CNS infection ... Diagnosis: ... • Stool culture ... ) • CSF (CNS Infection
Algorithm for the Evaluation of Acute Diarrhea (< 7 days)
Are the following present?
   1.
Evaluation of Acute ... Routine stool culture ... HIV infection or ... positive 2. ... algorithm #workup #diagnosis
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
- Persistently positive ... - Single positive ... Echocardiogram positive ... evidence of active infection ... #Endocarditis #diagnosis
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
Blood culture contaminants ... negative vs gram positive ... febrilepodcast] #ID #Infectious ... Diseases #Infections ... Differential #Ddx #Diagnosis
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
TB • LTBI is diagnosed ... patient has a positive ... Mycobacterial culture ... Liquid and solid cultures ... Mycobacterial culture
Endocarditis - Duke Criteria - Major and Minor

MAJOR CRITERIA: 
 - Persistently +ve blood culture for
Persistently +ve blood culture ... Coxiella burnetii infection ... rheumatoid factor - Positive ... blood cultures ... #Major #Minor #Diagnosis
Endocarditis checklist
Initial evaluation
 • Peripheral blood cultures (three sets at three different sites)
 • Additional culture
Peripheral blood cultures ... for metastatic infection ... Persistent fever, positive ... metastatic foci of infection ... #criticalcare #diagnosis
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Differential Diagnosis ... odds of having positive ... counts may delay diagnosis ... overlook severe infections ... #differential #diagnosis