62 results
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
(TST) False-negative ... because false-negative ... sample = 95% • A negative ... #Diagnosis #Workup ... LatentTB #ActiveTB #InfectiousDiseases
Table 3. Suggested Empiric Treatment Options for Clinically Suspected Ventilator-Associated Pneumonia in Units Where Empiric Methicillin-Resistant
Suggested Empiric Treatment ... Antipseudomonal/Gram-Negative ... Appropriate #Management #InfectiousDiseases
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture Negative ... as a cause of a negative ... Sweet's Syndrome, hidradenitis ... AnnKumfer #Culture #Negative ... Differential #Diagnosis #InfectiousDiseases
Disseminated Gonococcal Infection - Diagnosis and Management Summary

Bacteremic spread of the Gram-negative diplococci Neisseria gonorrhoeae. History
spread of the Gram-negative ... susceptibility testing ... • Laboratory testing ... typically part of the workup ... #Microbiology #InfectiousDiseases
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
Eosinophil Disorders Testing ... INDICATIONS FOR TESTING ... evaluation or workup ... 1,500 cells/µL Workup ... glucocorticoid treatment
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Diarrhea Workup ... Microbiologic-Testing ... Microbiologic-Testing ... negative and diarrhea ... #Diarrhea #Workup
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
disease) - May be negative ... HLA-DQ8 - High negative ... Reflects response to treatment ... Celiac #Disease #Testing ... Tests #Diagnosis #Workup
Tularemia - Diagnosis and Management Summary
Francisella tularensis - Aerobic fastidious gram-negative Coccobacillus - Zoonotic Infection
 •
fastidious gram-negative ... photophobia, increased tearing ... Culture & GS, PCR Treatment ... diagnosis #management #treatment ... #infectiousdiseases
Bacteremia Quick Reference - Treatment Duration

Gram Negative Bacteremia:
 • Avoid: Aminoglycosides and tigecycline
 • Catheters should
Quick Reference - Treatment ... Duration Gram Negative ... at 24 hours are negative ... #Bacteremia #Treatment ... Management #Duration #infectiousdiseases
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... danger of aerosol) Treatment ... first line of treatment ... diagnosis #management #treatment ... #infectiousdiseases