ICP

Question 1

Normal ICP

Answer 1

10-15 mmHg

Question 2

Cerebral Perfusion Pressure

Answer 2

MAP - ICP

Too low = ischemia
Too high = increased ICP

Question 3

Causes of increased ICP

Answer 3

Anything that causes expansion of the brain

increased thoracic pressure, decreased cerebral venous drainage, blood clot, infection, abscess

Question 4

Big sign of increased ICP

Answer 4

changes in LOC

Question 5

Procedure that should be avoided with increased ICP

Answer 5

lumbar puncture: can cause brain herniation

Question 6

Therapeutic management of increased ICP

Answer 6

drainage catheter via ventriculostomy (best method) to drain CSF and monitor ICP

code cool: barbiturate coma & keep pt at 33 Celsius (decreases metabolic demand & ICP)

elevate HOB @ 30 degrees (promotes CSF drainage); reduce environmental stimuli

Question 7

Medications to manage ICP

Answer 7

Mannitol
Loop diuretics 
Corticosteroids - not used much 
Anticonvulsants - controversial, not used much 
D50W (dextrose) for hypoglycemia

Question 8

Intraparenchymal catheter

Answer 8

goes in the brain tissue; measures temp, O2, pressure
requires surgery to place
not used with strokes

Question 9

Epidural transducer and subdural transducers

Answer 9

location based on the name
surgically implanted
can’t be rezeroed outside of the OR

Question 10

Complications of ventriculostomy

Answer 10

infection, intracerebral hemorrhage, CSF leakage, CSF overdrainage, herniation, mechanical failure, hematoma