17 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... infective endocarditis ... #Endocarditis # ... InfectiousDiseases ... #Microbiology #
Osler's Nodes in a patient with infective endocarditis

67yo presents with R occipital intraparenchymal hemorrhage (IPH) attributed
with infective endocarditis ... What’s your ddx? ... TTE negative but ... phenomena due to endocarditis ... #clinical #photo
Capnocytophaga
Pathogen: Capnocytophaga
 • 9 species, C. canimorsus responsible for the majority of infections
 • Gram-negative rod,
infections • Gram-negative ... 13%), Pneumonia, Endocarditis ... fusiform gram-negative ... Capnocytophaga #canimorsus #microbiology ... #zoonotic #infectiousdiseases
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... antimicrobials, clinical ... #Infective #Endocarditis ... differential #workup #infectiousdiseases
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know
Diagnosis (Two of the following):
(1) Clinical
following): (1) Clinical ... Microbiology: • ... • 15-35% Gram negative ... Others • Culture negative ... Diagnosis #Management #InfectiousDiseases
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
on culture and microscopy ... agar - Lactose Negative ... - gram negative ... Acinetobacter #baumanii #clinical ... #microscopy #microbiology
Tuberculosis Testing

LATENT TB
• LTBI is diagnosed when an asymptomatic patient has a positive TST or IGRA
result with no clinical ... TB AFB smear microscopy ... because false-negative ... sample = 95% • A negative ... LatentTB #ActiveTB #InfectiousDiseases
Endocarditis - Overview and Differential Diagnosis Framework

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV
Hypercoagulable (APLAS) Microbiology ... aureus, Coagulase-negative ... staphylococci Culture Negative ... Glomerulonephritis DDX ... Diagnosis #cardiology #infectiousdiseases
Cyclosporiasis - Diagnosis and Management Summary
Pathogen: 
 • Cyclospora cayetanensis
 • Foodborne, waterbone, and soil-transmitted.
 •
Established via stool microscopy ... routine O&P • Clinical ... management #treatment #microbiology ... #infectiousdiseases
What's the Dx?
• 29-year-old male 
• Transfer community hospital 
• Hypotension
• Renal failure
• Altered mental status.
What's the Dx? ... Using IV heroin • Negative ... vegetation secondary to endocarditis ... #Clinical #POCUS ... PLAX #Infective #Endocarditis