Chronic hypertension shifts the cerebral autoregulation curve to?

the right

T/F

Autoregulation is present in diseased tissue.

False-it is absent in diseased or traumatized tissue.

Perfusion is therefore dependent on CPP

What will a patient who is unable to autoregulate require to maintain CPP?

A higher MAP

What is the normal CPP?

80-100 mmHg

How is CPP calculated?

CPP= MAP-ICP

CPP= MAP-CVP (if CVP is greater than ICP)

BP 180/90

ICP 35

CVP 14

Calculate CPP

CPP is 85

Brain 80%

Blood 12% 

CSF 8%

An increase in any one of the cranial volumes must be reciprocated by a reduction in another volume to maintain a normal ICP. Who's principle am I?

Monroe-Kellie principle

Whats the normal ICP?

5-15 mmHg

When does focal ischemia occur?

Global ischemia?

Focal ICP 25-55 mmHg

Global ischemia ICP >55mmHg

What is Cushing's Triad?

-Elevated MAP

-Reflexive bradycardia

-irregular respirations

A patient is exhibiting signs of N/V; altered LOC, severe HA. What's my ICP?

assume ICP is >20 mmHg

The patient starts to herniate at?

the critical point, the point of decompensation, irreversible brain damage, global ischemia and herniation

Paralysis of CN III (occulomotor) results in an inability to ______ the eye.

Paralysis of CN VI results in an inability to _____ the eye.

CN III-adduct 

CN VI-abduct

List five s/s of increased intracranial pressure.

-N/V

-HA

-blurred vision

-Altered LOC

-Unilateral pupil dilation

-papilledema

-HTN

-Bradycardia

-Irregular respiration

-Seizures