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Pathophysiology: Test 4 > Neurologic Dysfunction > Flashcards

Neurologic Dysfunction Flashcards

0
Q

Neural Systems Vital to Cognitive Function

-Memory and Language system

A
  1. Info is communicated
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1
Q

Neural Systems Vital to Cognitive Function

-Attentional System

A
  1. Provide arousal and maintenance of attention over time
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2
Q

Neural Systems Vital to Cognitive Function

-Affective or emotive system

A
  1. Mediate mood, emotion, and intention
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3
Q

Vegetative State

A
  1. When a person loses cerebral function, the reticular system and brain stem can maintain a crude waking state
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4
Q

Disorders above the Tentorial Plate (Supratentorial)

A
  1. Produces changes in arousal by either diffuse or localized dysfunction
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5
Q

5 Categories of Neurologic function

A
  1. LOC
  2. Pattern of breathing
  3. Pupillary reaction
  4. Oculomotor responses
  5. Motor responses
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6
Q

LOC

A
  1. LOC is the MOST CRITICAL clinical index of nervous systen function
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7
Q

Post-hyperventilation Apnea

A
  1. Lower brain stem centers regulate the breathing pattern by responding only to changes in PaCo2
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8
Q

Cheyne-Stokes Respirations

A
  1. Abnormal pattern of ventilation with alternating periods of tachypnea and apnea
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9
Q

Levels Of Altered Consciousness

-Confusion

A
  1. Loss of ability to think rapidly and clearly

2. Impaired judgement and decision making

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10
Q

Levels Of Altered Consciousness

-Disorientation

A
  1. Beginning loss of consciousness
  2. Disorientation to time followed by disorientation to place and impaired memory
  3. Recognition of self is lost last
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11
Q

Levels Of Altered Consciousness

-Lethargy

A
  1. Limited spontaneous movement or speech
  2. easy arousal w/ normal speech or touch
  3. May or may not be oriented X4
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12
Q

Levels Of Altered Consciousness

-Obtundation

A
  1. Mild to moderate reduction in arousal.
  2. Limited response to environment
  3. Falls asleep unless stimulated verbally or tactilely
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13
Q

Levels Of Altered Consciousness

-Stupor

A
  1. Condition of deep sleep or unresponsiveness from which person may be aroused or caused to open eyes only by vigorous and repeated stimulation
  2. Response is usually withdrawing or grabbing at stimulus
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14
Q

Levels Of Altered Consciousness

-Coma

A
  1. No verbal response to external environment or to any stimuli such as deep pain or suctioning do not yield motor movement
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15
Q

Levels Of Altered Consciousness

-Light Coma

A
  1. Associated with purposeful movement on stimulation
16
Q

Levels Of Altered Consciousness

Coma

A
  1. Associated with non-purposeful movement only on stimulation
17
Q

Levels of Altered Consciousness

-Deep Coma

A
  1. Associated with unresponsiveness or no response to any stimulus
18
Q

Oculocephalic Reflex Response

-Normal Response

A
  1. Eyes turn together to side opposite from turn of head
19
Q

Oculocephalic Reflex Response

-Abnormal Response

A
  1. Eyes do not turn in conjugate manner
20
Q

Oculocephalic Reflex Response

-Absent response

A
  1. Eyes move in direction of head movement

- BRAIN STEM INJURY

21
Q

Oculovestibular Reflex

A
  1. Ice water is injected into the ear canal
22
Q

Oculovestibular Reflex

-Normal Response

A
  1. Nistagmus and conjugate eye movement
23
Q

Oculovestibular Reflex

-Abnormal Response

A
  1. Non-conjugate eye movement
24
Q

Oculovestibular Reflex

-Absent response

A
  1. No eye movements
25
Q

Brain Death

A
  1. An isoelectric, or flat, EEG for 6-12 hrs in a person who is not hypothermic and has not ingested depressant drugs indicates brain death
  2. Brain is damaged so completely that it can never recover and cannot maintain the body’s internal homeostasis
26
Q

Cerebral Death (Irreversible Coma)

A
  1. Death of the cerebral hemispheres exclusive of the brain stem and cerebellum
  2. Brain stem may continue to maintain internal homeostasis
27
Q

Locked-In Syndrome

A
  1. Complete paralysis of voluntary muscles w/ the exception of eye movement
  2. Content of thought and level of arousal are intact
    - efferent pathways are disrupted.
28
Q

Normal ICP Intra-cranial Pressure

A
  1. 1 to 15 mm Hg

Pathophysiology: Test 4 (9 decks)

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