12 results
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... Tropheryma whipplei, Fungi ... #Causes #differential ... causes #culture #negative ... InfectiousDiseases #Microbiology
Fungal Biomarkers: Comparing Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 •
Fungal Biomarkers ... component of many fungi ... febrilepodcast #Fungal ... Galactomannan #diagnosis #comparison ... #microbiology
Septic Arthritis - Pathogens and Clinical Clues

Staphylococcus aureus 
Streptococcal spp. 
Neisseria gonorrhoeae 
Aerobic/Anaerobic 
Gram-negative bacteria 
Brucellosis
Septic Arthritis - Pathogens ... Anaerobic Gram-negative ... Fungal spp. ... Septic #Arthritis #Pathogens ... #Differential #
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... cultures remain negative ... fastidious bacteria or fungi ... PCR for specific pathogens ... Endocarditis #diagnosis #differential
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
epidermidis - Gram-negative ... bacilli - Fungi ... bacilli - Fungi ... Endocarditis #Bacteria #Pathogens ... #Diagnosis #Differential
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
Important Fungal ... and chitin in fungal ... • India ink - "Negative ... #microbiology #microscopy ... #fungus #comparison
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Pathogens: Candida ... Coccidioides - Negative ... Cryptococcus - Negative ... BAL GM does not differentiate ... Galactomannan #diagnosis #comparison
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Native and ... Bacteria #Etiology #Differential ... #Microbiology # ... Diagnosis #Pathogens
Pathogens in Pneumonia

Here is a quick review of the pathogens causing pneumonia (useful for enumerating differentials
Pathogens in Pneumonia ... for enumerating differentials ... strep - Gram-negatives ... #Pneumonia #Differential ... #Microbiology #
Diarrhea Workup and Management Algorithm in Transplant Patients
First Tier Microbiologic-Testing:
1. C. difficile PCR (Stool)
2. CMV qPCR
Patients First Tier Microbiologic-Testing ... range of enteric pathogens ... First Tier Microbiologic-Testing ... above testing negative ... Transplant #diagnosis #differential