Path: Infections Flashcards
3 most common causes of bacterial neonatal meningitis.
- Strep agalactiae
- E. coli
- Listeria m.
Group of diseases that cause congenital conditions if a fetus is exposed to them in the uterus.
TORCH Toxoplasmosis Other (HIV, syphilis, varicella, mumps, parvovirus) Rubella CMV Herpes Simplex
Most common bacterial causes of meningitis in adults.
Neisseria meningitidis
Strep pneumo
Complication from meningococcal meningitis.
Waterhouse-Fridereichsen syndrome
-adrenal hemorrhage
What is the difference in the WBC count between bacterial vs. viral meningitis?
Bacterial: increased PMNs
Viral: increased T cells (CD8)
Very common finding that is diagnostic of a brain abscess caused by Toxoplasmosis on CT scan.
Ring Enhanced Lesion
How does a TB meningitis lead to hydrocephalus?
TB causes chronic meningitis which leads to scarring of the arachnoid granulations and prevent CSF reabsorption.
Condition caused by neurosyphilis.
Tabes Dorsalis
-posterior column and dorsal root disease
What structures are affected by HSV-1 encephalitis that lead to memory and mood change?
Memory: temporal lobe
Mood: frontal lobe
Owl Eyes
Histologic characteristic of CMV infection. Most commonly affects AIDS pateints.
Major cause of death from a rabies infection.
It is an ascending infection and causes death by respiratory failure.
Name the virus and cell type that it infects in Progressive Multifocal Leukoencephalopathy.
JC polyomavirus
-infects oligodendrocytes
What infectious agent leads to Subacute Sclerosing Panencephalitis and what is the mechanism of tissue destruction?
Infection with measles virus that doesn’t get cleared from a primary infection and becomes altered.
-demyelinating disease
Main fungal infection in AIDS patients.
Cryptococcus neoformans
