25 results
Gram Negative Bacteria Overview Identification Algorithm #Diagnosis #Microbiology #GramNegative #Bacteria #Identification #Differential #Algorithm #Oxidase #Lactose #Urease
Gram Negative Bacteria ... Algorithm #Diagnosis #Microbiology ... #GramNegative #Bacteria ... Identification #Differential
Algorithm demonstrating identification of aerobic gram negative bacteria #Diagnosis #Microbiology #GramNegative #Bacteria #Identification #Differential #Algorithm #Lactose
of aerobic gram negative ... bacteria #Diagnosis ... #Microbiology # ... GramNegative #Bacteria ... Identification #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
Septic Arthritis - Pathogens and Clinical Clues

Staphylococcus aureus 
Streptococcal spp. 
Neisseria gonorrhoeae 
Aerobic/Anaerobic 
Gram-negative bacteria 
Brucellosis
Anaerobic Gram-negative ... bacteria Brucellosis ... Fungal spp. ... Arthritis #Pathogens #Differential
Transplant Infections Timeline
Pre-transplant:
 • Common bacteria (endogenous): Staphylococci (skin), Gram-negative bacilli (gut)
 • Viruses: HSV (reactivation)
Engraftment:
Pre-transplant: • Common bacteria ... Staphylococci (skin), Gram-negative ... Staphylococci (skin), Gram-negative ... difficile (gut) • Fungi ... Infections #Timeline #differential
Differential diagnosis of Skin + Eye infections
 • Bacterial: Staph spp, Strep spp, Pseudomonas spp, Bartonella,
Differential diagnosis ... infections • Bacterial ... VZV, CMV, HIV • Fungal ... Diagnosis #viral #fungal ... #Microbiology
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
blood culture negative ... Tropheryma whipplei, Fungi ... under BCNIE, these bacteria ... BCNIE #Causes #differential ... InfectiousDiseases #Microbiology
(1,3)-β-d-glucan
Abundant cell wall polysaccharide, found in most fungi, except cryptococci, zygomycetes (mucor, rhizophus) and blastomyces.
Sensitivity 64%-93%;
found in most fungi ... 87%-100% False Negatives ... Positives: • Bacteremia ... #diagnosis #laboratory ... #microbiology #
Infective endocarditis - etiology and sources of infection. 
 • Native and prosthetic 
valve endocarditis
 •
Native and ... Sources #Causes #Bacteria ... #Etiology #Differential ... #Microbiology #