Final Study Guide Critical Care
Intracranial Regulation
Mechanisms or conditions that impact intracranial processing and function
Focus is specifically on conditions that affect the contents of the cranium
o Cran
...
Final Study Guide Critical Care
Intracranial Regulation
Mechanisms or conditions that impact intracranial processing and function
Focus is specifically on conditions that affect the contents of the cranium
o Cranium-the bone structure that surrounds the brain
Brain, circulatory system (blood circulating through brain), and cerebrospinal
fluid
**problem with one these if intracranial regulation problem
Normal intracranial regulation
o Interaction between brain areas
Cerebrum (higher level of thinking), diencephalon, brain stem (primitive type of
functioning)
o Transmission of nerve impulses across neuronal synapses by neurotransmitters-requires
intact neurons, neurotransmitter receptors, and adequate amounts of neurotransmitters
o Constant supply of blood delivering oxygen and nutrients-BRAIN DOES NOT HAVE
OXYGEN OR GLUCOSE SUPPLY
If this is impaired, we will see impaired intracranial regulation fast!
Requires sufficient blood volume, cardiac output, and oxygenation
Cells rely heavily on perfusion and gas exchange (mainly oxygen)
Glucose supply
Hypoglycemia-changes in level of consciousness, confused (because of
impaired intracranial regulation), diaphoresis (autoimmune response
related to impaired intracranial regulation)
Hyperglycemia-sleepy
Impairments of different areas of brain reflect certain symptoms
o Frontal lobe:
Expressive aphasia
Contralateral seizures and motor weakness
PERSONAILITY AND BEHAVIOR CHANGES
Anger management and impulse control
o Temporal lobe:
Auditory hallucinations
IMPAIRED MEMORY (with bilateral tumor)
Personality changes
Psychomotor seizures
Visual field deficits
Receptive aphasia
hearing
DYSARTHRIA (difficulty articulating words)
Speech
o Parietal lobe:
Dyslexia (left side)
Position sense loss
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