MeningitisC Flashcards
(40 cards)
What are viral pathogens in meningitis?
Enterovirus, arbovirus, herpes
What are parasitic pathogens in meningitis?
Naeglaria sp, Acanthameoba sp
What are bacterial pathogens in meningitis
Step pneumo, neisseria meningitidis, h influenzae, listeria monocytogens
What are fungal pathogens in meningitis
Cryptococcus neoformans
What is meningitis most commonly caused by and how it it treated?
Virus, Empirically w/acyclovir until results are back , Tx symptoms
What is the most common bacterial meningitis?
Strep pneumo
Why is HIB making a comeback?
People arenít vaccinating! ESTUPIDOS!
Clinical presentation of meningitis in adults is typically what?
HA, fever, stiff neck, photophobia, change in mental status, obtundation, seizures, and vomiting
Clinical presentation of meningitis in infants is typically what?
Irritability, altered sleep, vomit, high pitch cry, decreased oral intake
Clinical presentation of meningitis in children is typically what?
Lethargy, confusion, somnolence
What are the 2 ìsignsî you can test for in meningitis?
Brudzinski neck sign and kernigs sign
What are the characteristics of normal CSF?
Clear, 50-60% serum glucose, pH 7.4,
What type of infection has the highest WBC count, neutrophilic differential, 80-500 mg/dL protein, and
Bacterial
Viral and fungal causes of meningitis both have what differential?
Lymphocytic
How do you diagnose meningitis?
CSF evaluaton w/ gram stain and culture, enzyme ammunoassay for bacteria, and PCR for virus, mycobacteria and fungal
When is empiric therapy started and how long is it continued for?
w/in 30 minutes of presentation regardless, 48-72 hrs or until diagnosis of meningitis is ruled out, if ID causative agent, stop empirical and start specific
If the CSF gram stain has nothing growing, is meningitis ruled out?
NO , Start empirical tx until ruled out by other more definitive testing
If clinical presentations are in an infant
Listeria monocytogens
What other pt population is more likely to be infected by listeria?
> 50 or alcoholic
What drug do you add to tx if you suspect listeria?
Ampicillin
What anti-inflammatory is used in meningitis?
Dexamethasone
Should dexamethasone be given before or after antibiotics?
BEFORE
What are concerns associated with use of dexamethasone?
Increased GI bleeds, decreased antibiotic penetration
What drug penetration is NOT affected by dexamethasone?
vancomycin