22 results
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
Endocarditis (IE) Has Negative ... Did they receive antibiotics ... Decreased yield due to antibiotic ... BloodCultures #Diagnosis ... #Management #Algorithm
The Spectrum of Tuberculosis

As shown in the graphic from our Primer, exposure to M. tuberculosis can
memory, can have negative ... tuberculin skin test ... @paimadhu ‏ #Diagnosis ... #InfectiousDiseases ... Testing #Results #TST
The following graph was prepared based on the latest information on Testing for the Diagnosis of
Testing for the Diagnosis ... bother doing any tests ... There are NO tests ... negative at 2 weeks ... #Diagnosis #InfectiousDiseases
Positive Seidel test on fluorescein stain exam

Globe rupture can be identified by a positive Seidel test
Positive Seidel test ... positive Seidel test ... in making the diagnosis ... , and starting antibiotics ... #PhysicalExam #Video
Legionnaire's Disease - Extrapulmonary organ involvement: CNS: Mental confusion, encephalopathic, headache. Cardiac: Relative bradycardia. GI: Loose
Cardiac: Relative ... insufficiency #Diagnosis ... #IM #InfectiousDisease ... Legionnaires #Legionella #Algorithm
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
- Differential Diagnosis ... and Management Algorithm ... Direct antiglobulin test ... normal • DAT negative ... #Management #Algorithm
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture Negative ... - Differential Diagnosis ... Consider prior antibiotics ... #Differential #Diagnosis ... #InfectiousDiseases
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
TB • LTBI is diagnosed ... ) False-negative ... because false-negative ... sample = 95% • A negative ... LatentTB #ActiveTB #InfectiousDiseases
Psittacosis 
Pathogen: Chlamydia psittaci - obligate intracellular gram negative
Transmission:
 • Birds are the primary reservoir
 •
intracellular gram negative ... hemoptysis, diarrhea Diagnosis ... Microimmunofluorescent antibody test ... #microbiology #diagnosis ... management #treatment #infectiousdiseases
Relative Afferent Pupillary Defect

This maneuver of intermittent light stimulus is called the alternating light test or
alternating light test ... swinging-flashlight test ... very sensitive diagnostic ... test, but not specific ... Neurology #Clinical #Video