infections of CNS Flashcards
Which of the following is the least likely to cause neonatal meningitis?
a. Group B strep
b. E.coli
c. Listeria
d. Streptococcus pyogenes
d. Streptococcus pyogenes
25F presents with headache, fever, neck stiffness PCR analysis of CSF is + for enterovirus. Which of the following would be another finding of CSF?
a. normal CSF glucose
b. elevated WCC with neutrophil predominance
c. formation of fibrin web
d. low protein
a. normal CSF glucose
b. elevated WCC with neutrophil predominance (bacterial cause)
c. formation of fibrin web (TB meningitis)
d. low protein (shld be high protein in viral meningitis)
patient presents to ED with headache and new onset neurological abnormalities including unilateral difficulty hearing
What is the likely cause?
a. VZV encephalitis
b. viral meningitis
c. barin tumour
d. HSV encephalitis
d. HSV encephalitis
40M with HIV presents with headache, neck stiffness, and confusion. Which of the following pathogens is unlikely to have infected the patient?
a. Cryptococcus neoformans
b. Trepona pallidum
c. Listeria monocytogenes
d. Neisseria meningitidis
d. Neisseria meningitidis (children, adolescents, young adults)
a. predisposing factor: HIV infection
An AIDS patient presented with drowsiness, vomiting and severe headache. His backyard is frequented by large number of pigeons. Indian ink of CSF shown. Which is the causative organism?
a. Cryptococcus Neoformans
b. Streptococcus Pneumoniae
c. Streptococcus Agalactiae
d. Neiserria Meningitidis
e. Haemophilus Influenzae
a. Cryptococcus Neoformans
Which bacteria commonly causes neonatal meningitis and sepsis and is the reason why pregnant women are advised antenatal screening for this bacteria.
a. Cryptococcus Neoformans
b. Streptococcus Pneumoniae
c. Streptococcus Agalactiae
d. Neiserria Meningitidis
e. Haemophilus Influenzae
c. Streptococcus Agalactiae (Group B Strep)
A 40-year-old man, presents with symptoms suggestive of meningitis. Six months ago he had undergone splenectomy for a ruptured spleen sustained during a MVA. CSF Gram stain shown. Which is the most likely organism?
a. Cryptococcus Neoformans
b. Streptococcus Pneumoniae
c. Streptococcus Agalactiae
d. Neiserria Meningitidis
e. Haemophilus Influenzae
b. Streptococcus Pneumoniae (asplenia is a predisposing factor)
how long is the incubation period of rabies?
4-13 weeks (20-90 days)
what type of bacteria is strep pneumoniae?
gram positive diplococci
what type of bacteria is Neisseria meningitidis?
gram negative diplococci
what type of bacteria is haemophilus influenzae?
gram negative coccobacilli
what type of bacteria is listeria monocytogenes?
gram positive rod
what type of bacteria is Streptococcus Agalactiae?
gram positive cocci in short chains
what is subdural empyema?
Collection of pus in space between dura and arachnoid
what is the most common pathogen that causes epidural abscess?
staph aureus
