MUST KNOW for each Microorganisms Flashcards
Organism also known as the VIETNAM ROSE
Neisseria gonorrhoeae
Gram negative, oxidase positive, cocci
Neisseria & Moraxella
Gram negative, semicircular diplococcus with flat opposing ends
Neisseria meningitidis
Gram negative kidney shaped diplococcus with concave opposing ends
Neisseria gonorrhoea
2nd most common cause of community acquired meningitis in adult
Neisseria meningtidis
Infection of this organism commonly occur with a co-infection of Chlamydia trachomatis
Neisseria gonorrhoeae
Causes Ophthalmia Neonatorum
Neisseria gonorrhoeae
3rd most common cause of acute otitis media and sinusitis in children
Moraxella catarrhalis
Presents as smooth, opaque, gray to white colonies with “Hockey puck’” like qualities on BAP
Moraxella catarrhalis
Older colonies of Moraxella catarrhalis shows
Wagon-wheel appearance on BAP
Butyrate Esterase positive organism
(This test may be used as a presumptive test for this organism)
Moraxella catarrhalis
Neisseria gonorrhoeae & Neisseria meningitidis ferments
N. gonorrhoeae: Glucose
N.meningitidis: Glucose & Maltose
Which Neisseria spp. can is often misidentified as N. gonorrhoeae
Neisseria cinerea
Selective medium for Neisseriaceae
Thayer Martin Agar
Modified Thayer Martin Agar
Martin Lewis Agar
New York City Agar
GC-LECT
This is a gram negative diplococci that is able to grow on BAP medium and can produce Gamma-glutamyl transferase
Neisseria meningitidis
N. gonorrhoeae does not grow on BAP and cannot produce GGT
This gram negative organism shows growth on blood agar at 22°C and on nutrient agar at 35°C. Able to reduce nitrate to nitrite. A non-fermenter. Positive for DNase production
Moraxella catarrhalis
N. gonorrheae can only grow on CAP
Gram negative encapsulated organism, able to grow on BAP
Neisseria meningitidis
Physicial demonstrative sign of Meningitis
Principle: Severe neck stiffness causes a patient’s hips and knees to flex when the neck is flexed
Brudzinki’s Sign
This is the most sever form of meningococcemia
Involves hemorrhage of the adrenals, shock, widespread purpura, DIC, thrombocytopenia, and adrenal insufficiency
Waterhouse-Friedreckson Syndrome
CSF Findings suggestive of Meningitis
200-20,000 PMN’s
Glucose: low (<50mg/dL)
Protein: High (>50mg/dL)
Most potent substance responsible for the manifestation of the Meningococcal dx
Endotoxin (Lipid A)
