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29 Cards in this Set
- Front
- Back
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What is normal CSF pressure?
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50-180 mm H20
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When should you NOT tap?
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Papilledema, ST mass lesion, cerebellar mas lesion, spinal cord tumor
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How do you test for SAH?
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CT, Detection of blood in CSF (100% more sensitive than a CT), Xanthochromia
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Yellow/Xanthochromia =
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In-vivo
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Pseudoxanthochromia
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Oxyhemoglobin (
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True xanthochromia
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Bilirubin
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Can you make billirubin in a traumatic tap?
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NO
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Heme + HO =
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Bili + Fe + Co (Uses NADPH and O2)
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Will a SAH clot?
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No, it already has
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Does SAH have a proportionability to WBC?
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NO
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What will the RBC count be in all 4 tubes of a SAH?
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Same (It will be less in tubes 3 or 4 for traumatic puncture)
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Where will the color of the tubes fade, in TT or SAH?
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TT
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What are the main cells in CSF?
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Lymphocytes (80%) and Monocytes (17%)
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Are there neutrophils in normal CSF?
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NO
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What will be > in MS?
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Lymphocytes (will be > 50 mm3)
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When is viral meningitis most common?
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warmer months
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The dominant cell of viral meningitis in the first 12 hours is what?
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neutrophils, later lymphocytes will dominate
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What will the WBC range be of viral meningitis?
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25-500 mm3 (max 1000); lower than bacterial
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What is the WBC range of bacterial meningitis?
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1,000-5000
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Where are neutrophils > 95% in CSF?
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Bacterial meningitis
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Where do most cases of bacterial meningitis occur?
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children < 5 years old
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What type of meningitis will you see low glucose levels?
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Bacterial and TB (rare in viral UNLESS its herepes). WBC eat glucose.
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What meningitis will you see proteins rise and glucose fall?
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TB
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What pts will you NOT see a < in glucose with bacterial meningitis?
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neonates with pneumococcal and older patient with < resistance
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What is the gram stain in bacterial men?
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+
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What is the gram stain in viral men?
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-
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< 40 glucose?
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Bacterial
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> 100 protein?
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Bacterial (Viral normal - 100)
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cell count <500
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Viral
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