Lumbar Puncture Flashcards
1
Q
What position can you get an opening pressure
A
lateral recumbent
2
Q
What position can you not get an opening pressure
A
upright position
3
Q
Manometer
A
measures intracranial pressure
4
Q
Normal opening pressure
A
18-20
5
Q
4 tubes
A
Tube 1- collect cel count and differential
Tube 2- glucose and protein
Tube 3- culture and gram stain
Tube 4- cell count and differential
6
Q
How much fluid do you collect?
A
4-8mL
7
Q
If it is a subarachnoid hemorrhage what will you se in all tubes?
A
blood
8
Q
How much does each tube collect
A
2cc
9
Q
When measuring opening pressure which way is the valve on the stopcock
A
upward
10
Q
CSF analysis WBC
A
>5cells/uL= possible infection Bacteria= increase in neutrophils Viral= increase in lymphocytes
11
Q
CSF analysis RBC
A
<10 cells/UL is normal
12
Q
How to rule out traumatic tap?
A
xanthrocromia
13
Q
CSF analysis glucose
A
range= 50-80mg/dL Low= bacterial meningitis, sarcoidosis, syphilis, subarachnoid hemorrhage Variable= viral
14
Q
What can mask a depressed CSF glucose
A
serum hyperglycemia
15
Q
CSF analysis protein
A
normal= 15-45mg/dL Elevated= infection
