Lesson 9

Question 1

CPP = ___ - ___

Answer 1

CPP = MAP - ICP

Question 2

intracranial contents

Answer 2

brain tissue 80%
blood 10%
CSF 10%

Question 3

Hypoventilation

Answer 3

vasodilation

increased blood volume

Question 4

endless cycle

Answer 4

increased ICP = decreased CPP = decreased cerebral blood flow = ischemia = brain edema = increased tissue pressure

Question 5

C3 compression =

Answer 5

blown pupil

Question 6

once brain swelling starts (increased ICP)

Answer 6

cerebral cortex/RAS is activated
decreased LOC
activate hypothalamus = vomiting
motor neurons activated and cause abnormal posture (decorticate/decerebrate posturing)
brain can herniate

Question 7

what happens when ICP = MAP

Answer 7

no cerebral blood flow

CPP = MAP - ICP

Question 8

RAS =

Answer 8

reticular activating system

Question 9

how does the body react to make up for the decreased cerebral blood flow when ICP increases

Answer 9

BP increases and the patient becomes bradycardia

respirations become fast (decreased CO2) or irregular (increased CO2)

Question 10

O2 is a…

Answer 10

vasoconstrictor

Question 11

CO2 is a…

Answer 11

vasodilator

Question 12

6 neurologic exam components but we only do 4

Answer 12

mental status
cranial nerves
motor function (movement/feeling)
sensory function

Question 13

important questions to know from Tim

Answer 13

what did you find
what did you do
how are they know

Question 14

anisocoria

Answer 14

unequal pupils

Question 15

if you cant move 1 or both eyes theres a neurological deficit between C nerves…

Answer 15

3, 4 and 6

Question 16

skull fractures

Answer 16

linear
depressed
open/closed
basilar

needs a CT to know details

Question 17

brain contusion

Answer 17

brain bruise

similar to concussion but with neurological abnormalities

Question 18

intracranial hematoma types

Answer 18

epidural
subdural
intracerebral

Question 19

epidural hematomas

Answer 19

temporal lobe involvement

Question 20

subdural hematoma

Answer 20

results from tearing of veins between dura mater and arachnoid

Question 21

how long do you suction?

Answer 21

until its not needed

Question 22

if end tidal CO2 is up

Answer 22

increase ventilation effort

Question 23

CPP means…

Answer 23

cerebral perfusion pressure

Question 24

CBF means…

Answer 24

cerebral blood flow

Question 25

MAP means…

Answer 25

mean arterial pressure

Question 26

ICP means

Answer 26

intracranial pressure

Question 27

ICP normal range

Answer 27

10 - 15mm Hg

Question 28

what is ICP

Answer 28

the pressure exerted against the inside of the skull

Question 29

what can increase ICP

Answer 29

swelling, bleeding, CSF accumulation

Question 30

when do you do GCS?

Answer 30

after correctable causes mental status have been addressed

Question 31

anisocoria means…

Answer 31

unequal pupils

Question 32

T/F when you shine a light on one pupil only that one pupil should constrict

Answer 32

F! both should constrict

Question 33

TBI means…

Answer 33

traumatic brain injury

Question 34

EOM means

Answer 34

extraocular movement

Question 35

hyphemia means

Answer 35

blood in the eye (cover it)