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Old 04-01-2011
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Question Most Common cause of meningitis

Most common cause of meningitis in the group age of 39 years old is N meningitidis right??????
I did the kaplan simulated exam yesterday and I mark N meningitidis as the most common cause in a 39 year old pte.
Now I'm reviewing and it says it's S.pneumoniae.

Why is it that these people can't put their minds together????? Is so confusing reading one thing on Kaplan and the other one on FA.
I just don't know what to believe know.

The other day i start watching Pass program for cardiac physiology because they told me it was awesome, I have to turn it off when the gay start saying that systolic pressure is related to TPR because I learned the opposite on Kaplan and in Goljan book.


Ahhhhhhhhhhhh. I just hate this.
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Old 04-01-2011
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I learned in class that the most common cause of meningitis overall is Strep pneumo, then when you divide it into subgroups you have Group B strep for babies, N. meningitidis for adolescents, and Strep. pneumo for adults. I hate the whole age cut-off precise numbers too since it seems like all the sources vary, same with percentages...so annoying!
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Old 04-01-2011
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I agree with heights, the answer is infact S. Pneumonia. If you have referred to KLN then you have to go back to that table with the most common cause of meningitis/pneumonia/UTI among each age group (its given very well - memorize it!)
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Old 04-01-2011
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If you refer to FA-microbiology section, they put N. meningitidis on top of the list for age 6-60 years. So FA is not valid....????
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Old 04-01-2011
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Newborns:
1- GBS
2- E.coli
3- listeria

Children less than 6 years:
1- strep pneumoniae
2- neisseria
3- h influenzae
4- enteroviruses

6 years to 60 years:
1- neisseria meningitidis
2- enteroviruses
3- strep pneumoniae
4- HSV

Over 60 years:
1- strep pneumoniae
2- listeria

The story is different in HIV and immunocompramized patients where you have to think of listeria, fungi, JC virus, TB and toxoplasmosis.
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Old 04-01-2011
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This issue has been discussed previously in the following threads:
Most common cause of Meningitis?
Most common cause of meningitis?
Causes of neonatal meningitis

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