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What are (3) Types of Unconsciousness
- 1. Syncope
- 2. Orthostatic Hypotension
- 3. Acute Adrenal Insufficiency
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Anoxia
Absence or lack of oxygen
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Coma
- Deep Sleep.
- State of unconsciousness from which you cannot be aroused.
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Consciousness
- Aware
- Capable of responding appropriately to questions or commands
- Protective reflexes are intact
- Ability to maintain a patent airway.
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Faint
Sudden, transient loss of consciousness
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Hypoxia
Low Oxygen Content
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Factors that Cause Syncope:
- -reduction or interruption in cerebral blood flow
- -->usually resultingfrom an abrupt loss of cardiac output
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Syncope
- Sudden, transient loss of consciousness w/out symptoms followed by resumption of consciousness w/in seconds to minutes
- -used interchangeably with the term faint.
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Unconsciousness
Lack of response to sensory stimulation
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(3) Predisposing Factors for Unconsciousness:
- 1. Stress
- 2. Impaired physical status (ASA III or IV)
- 3. Administration or ingestion of drugs:
- -Analgesics (CNS depressant); Antianxiety agents (CNS depressant); Antibiotics, Local Anesthetics (most common dental drug).
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List the (4) General Causes of Unconsciousness
- 1. Inadequate cerebral circulation & oxygen deprivation.
- 2. Metabolic Changes
- 3. Actions of the CNS
- 4. Psychic Mechanisms
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(5) Steps in Management of Unconscious Patient
- PCABD
- P-Position Victim (SUPINE)
- C-Circulation
- A-assess and open AirwayB-Breathing - assess & ventilate if necessary
D- Definitive management
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Vasodepressor Syncope
- aka
- Vasovagal Syncope
- Common (simple, benign) faint
- Neurogenic, psychogenic syncope
- Swoon
- Most Common emergency
- -53% of all emergencies
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What are (5) Psychogenic Predisposing Factors?:
- •anxiety
- •emotional
- •receiving unwelcome news,
- •sudden pain
- •blood
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What are (7) Non-Psychogenic Predisposing Factors:
- –Erect posture,
- –hunger,
- –dieting,
- –exhaustion,
- –poor physical condition,
- –hot humid environment,
- –male,
- –ages
- 16-35
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List (3) Types & Etiologies of Syncope
- •Cardiac Syncope
- •Noncardiac Syncope
- •Neurocardiac/Vasodepressor
- Syncope
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–Inadequate cardiac output
- --Electrical problems (arrhythmias) or
- --mechanical problems (obstructive) cause this
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Noncardiac Syncope
- –Seizures,
- -orthostatic hypotension,
- -situational occurrences,
- -hyperventilation,
- -metabolic disease
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Neurocardiac/Vasodepressor
Syncope
–Pain, fear, exhaustion, acute illness
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