Brain Injury: IICP

Question 0

Causes of IICP

Answer 0

1. Rise in CSF pressure
2. Increased pressure w/in the brain matter
3. Bleeding into brain or fluid around the brain
4. Swelling w/in the brain matter itself

Question 1

Normal Level for ICP

Answer 1

1. 5 to 15 mmHg

Question 2

IICP

-Ways it Damages Brain?

Answer 2

1. Pressure itself can damage the brain or spinal cord

2. Restriction of blood flow into the brain

Question 3

Monroe-Kellie Hypothesis

-Brain Components

Answer 3

1. Brain Tissue (Mass)
2. Blood
3. CSF

Question 4

Monroe-Kellie Hypothesis TEST

Answer 4

1. ICP is stable as long as volume added is balanced by volume displaced
2. Expansion by any one causes rise in ICP if volume of other two remains constant

Question 5

Causes of IICP

Answer 5

1. Brain Tumors
2. Subarachnoid Hemorrhage
3. Toxic or viral encephalopathy

Question 6

IICP

-Compensatory Mechanisms

Answer 6

1. CSF Regulation
   - shunted from brain to spinal subarachnoid space
2. Pressure Autoregulation
3. Metabolic Regulation
   - CO2 is most potent vasodilator affecting the brain

Question 7

IICP

-CO2 TEST

Answer 7

1. CO2 is the most potent vasodilator affecting the brain **TEST
2. Hyperthermia increases O2 and glucose consumption

Question 8

The Brain

-O2 & Glucose TEST

Answer 8

1. Oxygen and glucose are not stored by the brain

2. With decreased LOC, check glucose level which can cause it

Question 9

IICP

-First Manifestation

Answer 9

1. Change in LOC

2. Restlessness w/out apparent cause, confusion, increased drowsiness