Meningitis Flashcards
What is Meningitis
inflammatory disease of the leptomeninges, the tissues surrounding the brain and spinal cord
…defined by an abnormal number of white blood cells in the cerebrospinal fluid (CSF).
What are the major causes of community-acquired bacterial meningitis in adults in developed countries ?
Streptococcus pneumoniae
Neisseria meningitides
Listeria monocytogenes
What is the maintained CSF pressure in healthy adults?
CSF pressure less than 150 mm H20
What are the meninges consist of three parts?
- Pia
- Arachnoid
- Dura maters
What is the classic triad of meninges?
- Change in Mental Status
- Fever
- Nuchal Rigidity
What is the Most common cause of meningitis in adults
Streptococcus pneumoniae
What are common s/s of adult meningitis?
- Watch neurological changes – hearing loss
- Seizures
- Papilledema
- Cerebral infarction
s/s of Neisseria Meningitis
Characteristic skin changes
- Petechiae and palpable purpura
what is the normal csf production rate?
20 ml/hr
> 3 polymorphonuclear leukocytes (PMNs)/microL are abnormal in adults
TRUE
An elevated CSF WBC concentration does not diagnose an infection, since increases in the CSF WBC concentration can occur in a variety of both infectious and noninfectious inflammatory states
TRUE
What are the two major tests performed in the chemistry laboratory on CSF?
determination of protein and glucose concentrations.