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InfDis of NS
infectious diseases affecting the nervous system
12
Microbiology
Undergraduate 2
12/07/2013

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Cards

Term
-anatomically defined-disease
-headache, stiff neck, fever, and usually an increased number of WBC in the CSF
petechiae, intracranial pressue, bleeding or necrosis, stroke, seizures
-bacterial can be serious.. brain damage, hearing loss, learning disabilities
-viral may be self-limiting
-transmittable via coughing, kissing, sneezing (prolonged or intimate contact but not casual)

What is it? how do we treat it?
Definition
meningitis treated with 3rd gen or higher cephalosporins, usually steroids are given to children
Term
sever stiffness of the hamstrings that causes an inability to straighten the leg when the hip is flexed to 90 degrees
-sign of meningitis
Definition
Kernig's sign
Term
severe neck stiffness causes a patient's hips and knees to flex when the neck is flexed
-sign of meningitis
Definition
Brudzinski's sign
Term
Gram(-)"kidney bean shaped" diplococci
VF: pili, capsule, LPS (superantigen toxin)
-sudden onset of high fever + 'flu-like'
-weakens endothelial, leading to BBB permeability
-edema and WBC involvment: IC pressure, thrombosis, and damage
-causes the most serious form of acute bacterial meningitis
-can also develop complications and other manifestations within hours (Meningococcemia, Waterhouse-Friderchsen Syndrome)

30-50% mortality rate

what is it? treat with?
Definition
Neisseria Meningitidis, treat with Ceftriaxone, ciprofloxacin
Term
Systemic N.meng infection of the bloodstream, LPS
-fever, rash, joint pain, diffuse Intravascular coagulation (DIC), shock, death within hours
Definition
Meningococcemia
Term
N.meng infection of the adrenal glands
Definition
Waterhouse-Friderichsen Syndrome
Term
Gram(+) "lancet shaped" diplococci
-most frequent cause of community acquired meningitis
-99% similar to N.meng, but no petechiae (hemorrhagic spots on skin)
-1/3 of survivors will have neurological deficits
-many different types, type 3 is worst
vaccine available: Prevnar and Pneumovax
Definition
Meningitis caused by strep. pneumo
Term
tiny Gram(-) pleomorphic rods
-nasopharynx pathogen
-causes severe meningitis
-leading cause of otitis media
-opportunistic pathogen
-was the main causative agent of disease but now there's a vaccine

what is it? treatment?
Definition
Haemophilus influenza treated with Cefotaxime
Term
Gram(+), varies in shape
-food-borne pathogen, "the Hot Dog Bug", resistant to cold
-in normal adults: diarrhea, mild infection with symptoms of fever and sore throat
-in elderly or immunocomp patients, fetuses, or neonates: affects the brain/meninges and septicemia
what is it? treatment?
Definition
listeria monocytogenes treated with ampicillin, trimethoprim-sulfamethoxazole
Term
Neonatal bacterial meningitis has two very common causes:
1) _________: Gram(+) cocci in short chains, looks similar to L.monocytogenes but nonmotile
-also causes RDS in infants and puerperal sepsis (childbed fever) in mother
-if you are pregnant you will be tested for this
2) _______:Gram(-) rods, from fecal flora contamination, ID (+) indole test

what are they? treatments?
Definition
1) streptococcus agalactiae (Group B strep)treat with penicillin G plus aminoglycosides
2) E.coli treated with cefotaxime plus aminoglyosides
Term
-"gummy" skin rash
more chronic form of meningitis with gradual onset of symptoms, a lot of
time with respiratory inf.
-may be associated with birds or decaying plant matter
-fungal meningitis

what is it? treatment?
Definition
Crytococcus neoformans treated with Amphotericin B and fluconazole
Term
fungus causing secondary meningitis
-usually begins with pulmonary infection prior to meningitis
-found in soil in SW USA
-"bag of coins" and "blocky spores" appearance microscopically
what is it? treatment?
Definition
Coccidioides immitis treated with Amphotericin B or oral or IV itraconazole
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