Nurs 121 stages of sleep exam 4

What is the non rapid eye movement stage?

Consists of four stages, typically over a 90 minute cycle

What is the rapid eye movement stage? (REM)

20-25% of a persons sleep time, pulse, RR, BP, metabolic rate, and body temp increase, skeletal muscle tone and DTR’s are depressed.

Stage 1 of sleep N1

Lightest sleep, couple of minutes, just barley closed the eyes, easily wakened

Stage 2 N2

Stage of sound sleep, relaxation progresses, arousal is still easy, brain and muscle activity continue to slow

Stage 3 N3

Slow wave sleep, deepest stage of sleep, difficult to arouse, rarely moving, lower vital signs, brain and muscle activity are significantly decreased.

REM sleep

Takes about 90 minuets after falling asleep, dreaming occurs, very difficult to arouse, gastric secretions increase, duration of this phase increases with each cycle and averages about 20 minutes.

How many stages of NREM sleep does a person go through a night?

4-6

What are the order of the stages of sleep?

1,2,3,4,3,2,REM

Older adults sleep:

Need more time to fall asleep, wakeup more frequently, less able to cope with changes in sleep pattern

What age is insomnia most common?

Middle adults

What are factors affecting sleep?

Diet, alcohol, caffeine, medications, stress, exercise

What are Dyssomnias?

Insomnia or excessive sleepiness

What are Parasomnias?

Patterns of waking behavior, sleep walking, enuresis (bed wetting)

What is insomnia?

Difficulty falling asleep or early awakening

What is narcolepsy?

Uncontrollable desire to sleep