Neuro

Question 1

Metabolic demands of brain

Answer 1

20% CO

Question 2

MAP in head injury pt

Answer 2

Need to maintain higher map to overcome ICP

-85-90

Question 3

Secondary brain injuries

Answer 3

Biochemical & cellular response to initial insult.
Exacerbate, and injure uninsured brain.
-hypoxia, Hypotension, hyper/hypocapnia

Question 4

Subdural Hematoma, higher incidence in which type of injury?

Answer 4

Acceleration

Question 5

Mannitol in subdural hematoma

Answer 5

Osmotic diuresis, decreases viscosity of blood, improves micro circulation.
-Lasix can be used instead.

Question 6

Serum Na levels in head injuries:

Answer 6

155 (Hypernatremic)

Question 7

Serum osmolality in head injuries

Question 8

Brown-Sequard cord injury

Answer 8

• hemisection of cord (usually cervicle)

- ipsilateral loss of motor position, vibratory sense, contra lateral loss of pain and temp perception.

Question 9

Central cord syndrome

Answer 9

Greater motor weakness in upper Extremities than lower

-varying degree of sensory loss.

Question 10

Anterior cord Syndrome

Answer 10

Complete motor, pain, temp loss below lesion, w/ sparing proprioception, vibration & touch.

Question 11

Cord transection

Answer 11

Parasympathetic dominance below lesion.

Question 12

Autonomic Dysreflexia or neurogenic bladder

Answer 12

HTN caused by transection above T6

-check foley for kinks, drain slowly.

Question 13

Monroe Kelli hypothesis

Answer 13

Cranial valet fixed space- blood, brain, CSF

-increase one, must decrease another.