Sleep Notes - Sleep Sleep Overview Sleep readily reversible...

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Sleep Sleep Overview Sleep- readily reversible state of altered consciousness in which awareness and responsiveness to the environment are decreased 1/3 of life spent sleeping Biological sleep clock- circadian rhythm Sleep patterns 8 hours of sleep typical for adult Takes 7-10 minutes to fall asleep on average Body naturally changes positions many times throughout the night 1-2 awakenings per night for adults and increases with age 15-30 minute naps considered energizing Stages of Sleep Stage I Stage II Stage III Rapid eye movement (REM) sleep Stage I Transition between drowsiness and sleep Only lasts a few minutes Feels as though daydreaming if awakened during this state Heart rate decreases Stage II 40-50% of sleep time Can be easily awakened Muscles relax Body functions slow Stage III Deep sleep Body functions continue to slow Sleep walking and bed-wetting can occur Dreams occur- often realistic
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  • Spring '13
  • Jones
  • Nursing, REM Sleep, rapid eye movement, Circadian rhythm, restless leg syndrome

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