12 results
Blood culture contaminants
Grouped by gram negative vs gram positive vs other as well as never/maybe/probably
Some additional
negative vs gram positive ... @swinndong via Febrile ... febrilepodcast] #ID ... Bloodculture #Bloodcx #bcx
By @LeaGoren @Aliceclehman @thie0149 via Febrile [febrilepodcast.com  @febrilepodcast]
#ID  #InfectiousDiseases  #Infections
#Microbiology #Micro
#BCG #Mbovis #TB
@thie0149 via Febrile ... febrilepodcast] #ID ... Microbiology #Micro #BCG
Serious Bacterial Illness (SBI):
1) UTI and pyelonephritis
Most common cause of SBI
Accounts for 3-8% of uncharacterized fevers
Female
circumcised Consider BCx ... particularly complex febrile ... seizure) #Diagnosis #Peds
Positive Babinski Reflex with dorsiflexion of the big toe after stroking the sole of the foot.
This
Positive Babinski ... dorsiflexion of the big ... Reflex #Upgoing #Positive ... #Peds #Pediatrics ... #Clinical #Video
Duke's Criteria for Infective Endocarditis
Definite IE - Pathologic Criteria:
 • Pathologic lesions - vegetation or intracardiac
- Persistently positive ... - Single positive ... Echocardiogram positive ... phenomena • Micro: + bcxs ... @swinndong via Febrile
Guide to Interpretation of Positive Blood Cultures

I arrange the potential Gram stain results that one can
Interpretation of Positive ... Remember that clinician ... 1) Number of positive ... Fewer positive cultures ... BloodCultures #BCx
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Specificity: - Serum BDG ... cut-offs defined in clinical ... in HM • False positives ... should not increase BDG ... setting of GVHD) ID
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
patient has a positive ... result with no clinical ... • History of BCG ... • The positive ... NAAT + AFB-positive
Vibrio Vulnificus skin infection
Cirrhosis w/recent consumption of raw oysters w/rapidly evolving rash. 
Vibrio vulnificus part of
Hippocrates in 5 BC ... immunosuppressive meds ... Early abx are critical ... dermatology #legs #clinical ... #photo
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
individual studies Clinical ... diseases, describe clinical ... 100%, then all positive ... proportion of positive ... c/d) = (ad) / (bc