Create an account
Choocolate agar base containing vancomycin, colistin, nystatin, and trimethoprim is also known as:
The tablet containing sodium citrate & sodium bicarbonate that is placed on Jembec plate generates _____ when moisture hits it:
A gram-negative diplococcus that grows on modified Thayer-Martin medium can be further confirmed as Neisseria gonorrhoeae if it is:
Neisseria meningitidis can be carried in the ______, which serves as a reservoir for infection:
Organisms that may be mistaken for Neisseria gonorrhoeae in gram-stained smears of uterine cervix exudates include:
Moraxella species (GN diplococci)
A gram-negative diplococcus isolated from a middle ear aspirate grew on chocolate agar. The organism fails to produce acid from glucose, maltose, lactose, and sucrose. It was DNase positive and is most likely:
Moraxella catarrhalis, an opportunistic pathogen
A GNC isolated from the CSF of a 16-yr old ferments glucose and maltose, what is the identity of this organism?
An organism previously thought to be nonpathogenic, Moraxella catarrhalis, is now known to be associated with infection and nosocomial transmission. Characteristic identification criteria include:
all carbohydrates negative
A child was diagnosed with bacterial meningitis. Further testing of the spinal fluid would likely indicate:
increased WBCs with a predominance of neutrophils, increased protein, and decreased glucose
Which of the following organisms is Dnase positive:
A gram stain from a purulent drainage of a synovial fluid reveals numerous gram-negative diplococci. The organism grew on chocolate agar and Thayer-Martin but failed to grow on SBA or MAC. Further testing revealed the organism to be Ox + and glucose + and beta-lactamase +. The organism is most likely:
A gram stain performed on a sputum speciment revealed gram-negative diplococci within PMNs. Oxidase testing is positive and carbohydrate degradation tests are inert. The organism is:
Which statement correctly describes the mode of action of the antibiotic listed for Modified Thayer-Martin agar:
Nystatin inhibits fungi & molds
The specimen of choice for detecting Neisseria meningitidis carriers would be:
nasopharyngeal (N/P) swab
Assuming that the agent isolated from a patient's spinal fluid produces a positive oxidase test, the most likely diagnosis is:
An isolate recovered from a blood culture specimen was subcultured onto chocolate agar and produced gram-negative diplococci that were oxidase positive and produced acid from glucose and maltose but not from lactose and sucrose. The isolate is most likely:
The following results were obtained from a culture of unknown origin:
Glucose+ Maltose, Sucrose -
The most likely source of the specimen would be:
Which of the following would you LEAST expect to culture from a case of otitis media:
Moraxella, S. pneumoniae & Haemophilus influenzae are the three most common causes of otitis media. Neisseria meningitidis may be possible, but is unlikely.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together