31 results
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... - Differential Diagnosis ... antibiotics as a cause ... #Differential #Diagnosis ... #InfectiousDiseases
Differential diagnosis of Skin + Eye infections
 • Bacterial: Staph spp, Strep spp, Pseudomonas spp, Bartonella,
Differential diagnosis ... , M. leprae • Parasitic ... #dermatology #InfectiousDiseases ... #Differential #Diagnosis ... viral #fungal #Microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Pregnancy • CNS ... infection Diagnosis ... Monocytogenes #diagnosis ... #management #infectiousdiseases ... #treatment #microbiology
Listeriosis Summary - Listeria Monocytogenes
Pathogen: Listeria Monocytogenes - Gram-positive rod, Aerobic, facultative anaerobe, motile, beta-hemolytic, Non-spore-forming
Risk
Pregnancy • CNS ... infection Diagnosis ... Monocytogenes #diagnosis ... #management #infectiousdiseases ... #treatment #microbiology
Causes of Relative Bradycardia - Note the propensity for intracellular organisms.
Infectious: 
Legionella, Psittacosis, Q fever, Typhoid
Causes of Relative ... : ß-blockers, CNS ... #bradycardia #Causes ... #differential #diagnosis ... #infectiousdiseases
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... #differential #diagnosis ... #causes #culture ... #Endocarditis #InfectiousDiseases ... #Microbiology #
Hantavirus
Pathogen: Hantavirus - Rodents are the primary reservoir
Transmission:
 • Shed in the urine, feces, saliva of
barns and lake houses ... +/- diarrhea Diagnosis ... #Hantavirus #diagnosis ... management #treatment #microbiology ... #infectiousdiseases
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
CNS Ring-Enhancing ... Chorioretinitis • Diagnosis ... • Nocardia • Parasitic ... #differential #diagnosis ... #causes #radiology
Nocardiosis - Nocardia spp
Pathogen: Filamentous gram-positive branching rod, grows in acid fast staining and anaerobic conditions
Clinical
infection 39% • CNS ... Nocardiosis #Nocardia #diagnosis ... #management #microbiology ... #infectiousdiseases
Cyclosporiasis - Diagnosis and Management Summary
Pathogen: 
 • Cyclospora cayetanensis
 • Foodborne, waterbone, and soil-transmitted.
 •
Cyclosporiasis - Diagnosis ... intracellular parasite ... • Anorexia, Nausea ... management #treatment #microbiology ... #infectiousdiseases