malinda
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A 14-year-old boy is brought to the emergency department by his parents because of high fever, headache,
and stiff neck for the past 36 hours. He has become confused over the course of the morning. He
uses no medications, has no allergies, and is not sexually active. On examination, he has a
temperature of 38 C, moderate nuchal rigidity, and marked photophobia. Lumbar puncture is
performed, and the cerebrospinal fluid shows: WBC 3500 with 95% PMNs, elevated protein,
decreased glucose, and gram-positive cocci in pairs and short chains. By which of the following
mechanisms does this organism mediate its attachment to the respiratory mucosa?
A. Production of a C carbohydrate
B. Production of a hemolytic exotoxin
C. Production of a hyaluronic acid capsule
D. Production of an IgA protease
E. Production of an M protein
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| robin082006
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Pneumococcus, teichoic acid for attachment and IgA protease for colinization
D is most suitable in this q
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| malinda
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correct.Just one thing ...is this age group suitable for pneumococcus.
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| Ashley84
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S. pneumoniae causes meningitis at any age. So it's suitable
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| sugandhna
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which out of niesseria gonococci or meningitis is more fatal for neonates?
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| bactitech
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Can you have degrees of fatality? Hmmmm......anyway.....
Neisseria gonorrhoeae doesn't cause bacterial meningitis; N. meningitidis does. However, this organism is not usually associated with bacterial meningitis of neonates. Group B beta strep usually is the biggie in this group. E. coli, Listeria, Kleb. pneumoniae, and S. pneumoniae can also cause meningitis in neonates, assuming by neonate you mean a child only a month or two old.
Viruses can also cause meningitis in neonates. This article gives a good rundown:
http://www.emedicine.com/neuro/topic239.htm
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| sugandhna
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thanks bactitech
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| sugandhna
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| zaidsuror
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D
the 2 most common causes of meningitis in adults and nowadays in vaccinated children is are
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| zaidsuror
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D
the 2 most common causes of meningitis in adults and nowadays in vaccinated children are strp pnem and nissera mening ,and both utelize iga protease to colonize on the mucose
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