33 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
testing (TST) False-negative ... because false-negative ... sample = 95% • A negative ... #Workup #TB #Latent ... LatentTB #ActiveTB #InfectiousDiseases
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
and sources of infection ... • Native and ... • Soft tissue infections ... for TPN) and antibiotic ... #Microbiology #Diagnosis
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
microbiological techniques Work-up ... BCNIE Diagnostic ... #Endocarditis #diagnosis ... #differential #workup ... #infectiousdiseases
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
- Differential Diagnosis ... Consider prior antibiotics ... Dracunculiasis - Non-Infectious ... #Differential #Diagnosis ... #InfectiousDiseases
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... Infectious: Legionella ... spotted fever, Non-infectious ... #differential #diagnosis ... #infectiousdiseases
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
Transplant Infections ... Staphylococci (skin), Gram-negative ... #Transplant #Infections ... #differential #diagnosis ... #causes #infectiousdiseases
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
- Diagnosis and ... spread of the Gram-negative ... Laboratory Diagnosis ... typically part of the workup ... #Microbiology #InfectiousDiseases
Travel History - Clues to Infectious Disease Diagnosis in a Traveler 
 • Where did you
History - Clues to Infectious ... Disease Diagnosis ... Commercial sex worker ... HPI #Interview #InfectiousDiseases ... #Diagnosis #Traveler
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
Things To Know Diagnosis ... • 15-35% Gram negative ... Conncomitant catheter infection ... • Prophylactic antibiotics ... #Management #InfectiousDiseases
Algorithm for the Evaluation of Acute Diarrhea (< 7 days)
Are the following present?
   1.
hospitalization or antibiotics ... HIV infection or ... Consider empiric antibiotic ... management #algorithm #workup ... #diagnosis