Chapter 20.pe - Chapter20 AnxiolyticandHypnoticAgents

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Chapter 20 Anxiolytic and Hypnotic Agents
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Types of Anxiolytic and Hypnotic Agents Anxiolytics Prevent feelings of tension or fear Sedatives Calm and make patients unaware of the environment Hypnotics Cause sleep Minor tranquilizers Produce a state of tranquility in anxious patients
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States Affected by Anxiolytic and  Hypnotic Drugs Anxiety  Feeling of tension, nervousness, apprehension, or  fear involving unpleasant reactions to a stimulus Sedation Loss of awareness and reaction to environmental  stimuli   Hypnosis  Extreme sedation resulting in further CNS depression  and sleep
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Sites of Action of Benzodiazepines and  Barbiturates
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Benzodiazepines—Actions Act in the limbic system and the RAS Make GABA more effective Cause interference with neurons firing Lower doses cause anxiolytic effects Higher doses cause sedation and hypnosis
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Benzodiazepines—Indications Anxiety disorders Alcohol withdrawal Hyperexcitability and agitation Preoperative relief of anxiety and tension
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Benzodiazepines—
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Chapter 20.pe - Chapter20 AnxiolyticandHypnoticAgents

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