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AUBF 1 Final > CSF > Flashcards

CSF Flashcards

1
Q

3rd major body fluid

A

CSF

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2
Q

provides physiological system to supply nutrients to the nervous system

A

CSF

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3
Q

Functions of CSF

A
  1. Supply nutrients to CNS
  2. Remove metabolic waste
  3. Produce mechanical barrier to cushion the brain and spinal cord against trauma
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4
Q

Lines the brain and spinal cord

A

Meninges

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5
Q

3 Layers of Meninges

A
  1. Dura mater
  2. Arachnoid mater
  3. Pia mater
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6
Q

outer layer and lines the skull and vertebral canal

A

Dura mater

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7
Q

spider-like and filamentous inner membrane

A

Arachnoid mater

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8
Q

innermost layer and lines the surface of brain and spinal cord

A

Pia mater

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9
Q

It is between arachnoid mater and pia mater
It is where CSF flows

A

Subarachnoid space

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10
Q

specific part of brain that produces CSF

A

Choroid Plexus

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11
Q

The choroid plexuses are ____ that form the CSF from plasma by mechanisms of ____ under ____ and active transport secretion

A

capillary networks
selective filtration
hydrostatic pressure

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12
Q

T/F
chemical composition of the CSF
resemble an ultrafiltrate of plasma

A

FALSE
It does not resemble

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13
Q

rate of CSF production

A

20 mL/hr

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14
Q

A tightly fitting junctures structure of endothelial cells in the choroid plexus

A

Blood-brain barrier

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15
Q

Protects the brain from chemicals and other substances circulating in the blood that can harm the brain tissue

A

Blood-brain barrier

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16
Q

Disruption of BBB allows WBC, protein and other chemicals to enter CSF

A

Blood brain barrier

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17
Q

specimen collected for CSF

A

lumbar puncture/tap and cisternal puncture

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18
Q

pressure of patient when CSF is collected

A

90 and 180 mmHg

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19
Q

Volume collected/removed for CSF if the pressure is normal

A

20 mL

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20
Q

On closing, the pressure should be between

A

10 and 30 mmHg

21
Q

A marked decrease in pressure following this procedure suggests

A

cerebellar herniation or spinal cord compression

22
Q

If the CSF pressure is less than or greater than normal 90-180 mmHg, what is the volume to be collected/ used

A

only 1-2 ml is used

23
Q

If the CSF pressure is greater than 200 mmHg, what is the volume to be collected/ used

A

not more than 2 mL

24
Q

Normal CSF volume for:
Adults
Neonates

A

90-150 mL
10-60 mL

25
Q

Tube distribution should be:

A
  1. Chem/IS
  2. Microbio
  3. Hema/ Cytology studies
  4. Microbio or Sero
26
Q

In tube distribution, what is the storage temp of Chem/ IS

A

Freezer temp

27
Q

In tube distribution, Microbiology is for ____, what is the storage temp

A

better, exclude skin contamination
Room temp

28
Q

In tube distribution, Hematology is for _____, and what is the storage temp

A

cell count
Ref temp

29
Q

Tube distribution if there is 1 tube only

A

Microbiology, Hematology, Chem/Sero

30
Q

T/F
Excess CSF should be discarded after

A

FALSE
should not be discarded and should be frozen until there is no further use of it.

31
Q

Appearance of a Normal CSF

A

Crystal clear

32
Q
  • Increase WBC that is greater than 200 /ul
  • Increase RBC that is greater than 400/ ul
  • Presence of microorganism
  • Increase Proteins and Lipid
A

Hazy, Cloudy, Turbid, Milky

33
Q

Pink: Slight amount of oxyhemoglobin
Yellow: bilirubin traces
Orange: In case of heavy hemolysis
Brownish: methemoglobin formation

A

Xanthochromic (Reddish to pinkish)

34
Q
  • Increase dietary carotene
  • Increase rifampin
    intake
  • Increase melanin
  • Normal neonate
  • Protein concentration exceeding 150mg/dL
  • Previous traumatic tap
A

Xanthochromic (Reddish to pinkish)

35
Q

Greater than 6000 RBCs/ul due
to:
- Traumatic tap or
- Intracranial hemorrhage/cerebral
hemorrhage

A

Bloody / grossly bloody

36
Q

Radiographic contrast dye

A

Oily

37
Q

Protein and clotting factors Meningitis, Froin’s syndrome

A

Clotted

38
Q

Tubercular meningitis

A

Pellicle

39
Q

Distribution of blood in 3 tubes in Traumatic tap

A

1>2>3

40
Q

Clot formation in Traumatic tap

A

Presence of clot

41
Q

Supernatant in Traumatic tap

A

Clear

42
Q

Erythrophages in Traumatic tap

A

Absent

43
Q

D-dimer test in Traumatic tap

A

Negative

44
Q

Distribution of blood in 3 tubes in Intracranial hemorrhage

A

1=2=3

45
Q

Clot formation in Intracranial hemorrhage

A

No clot formation

46
Q

Supernatant in Intracranial hemorrhage

A

After 2 hrs it will be Xanthochromic

47
Q

Erythrophages in Intracranial hemorrhage

A

Present

48
Q

D-dimer test in Intracranial hemorrhage

A

Positive

AUBF 1 Final (14 decks)

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