Viral CNS Infection Flashcards
important physical exam findings to rule out when suspecting viral meningitis
pulmonary: rule out pneumonia; dermatological: rash could indicate bacterial
important lab tests to rule out when suspecting viral meningitis
test for syphilis, HIV; looks at WBC count and determine if monocyte or neutrophil predominance (neutrophil means bacterial); urine; chest x-ray for TB; CSF glucose and protein, CSF gram stain
when a person presents with fever and headache, what are our two largest concerns?
meningitis & encephalitis (or combination)
if it is acute meningitis, what organisms would we suspect?
enterovirus, strep pneumo, neiss meningitidis
if it is chronic meningitis, which organisms would we suspect?
mycobacteria TB, fungal, sarcoid, malignancy
encephalopathy
altered consciousness with no evidence of inflammation in the CNS on imaging or CSF analysis
encephalitis
altered consciousness, evidence of CNS inflammation or imaging (virologically confirmed if pathogen identified in CSF by culture/PCR)
meningism
headache with neck stiffness and/or photophobia; NO evidence of altered consciousness or inflammation
purulent meningitis
meningism (headache, photophobia and/or stiff neck) with high WBC, predominance of PMNs, low glucose, high protein (microbiologically confirmed if pathogen identified)
aseptic meningitis
meningism with moderately high WBC (lymphocyte predominance), normal CSF glucose, high CSF protein (viral, TB)
prisoner, homeless, or immigrant is at greatest risk for what type of meningitis?
chronic from mycobacterium TB
Ohio River Valley is associated with what bacterial meningitis?
subacute histoplasma
agammaglobulinemia is associated with what form of meningitis?
chronic enterovirus meningitis
NSAID use is assoc. with what form of meningitis?
drug-induced acute meningitis
HIV is assoc with what meningitis organisms?
toxoplasma abscess, cryptococcal meningitis, HIV/CMV meningoencephalitis