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REM rebound (def).:
:when deprived of REM sleep on successive nights, the person will have more REM sleep at a later time to make up for the loss.
Sleep cycle (p.1082, fig. 34-2) -
Wake --> NREM l --> NREM 2 --> NREM 3 --> NREM 4 --> NREM 3 --> NREM 2 --> REM --> NREM 2
Factors affecting sleep:
: culture, development, lifestyle/habits, motivation, environment, psychological stress, illness, medication
development effects on sleep:
:age affects sleep time, ex., babies - 16-24hr; toddlers, 8-10,12; pre-schoolers, 9-16; school age, 8-10, adults, 8
Physical activity/exercise effects on sleep:
:increases fatigue and promotes relaxation, UNLESS w/in 2 hours of bedtime, where it can hinder
Diet effects on sleep:
: alcohol = sleep, lots of alcohol = bad sleep, caffeine, smoking = hinders sleep
Environment effects on sleep:
: home is best. Noisy, big city, small city. What's around you effects how you sleep and if you have adapted to it or not.
Medications and sleep:
:Drugs that decrease REM - barbiturates, amphetamines, anti-depressants. Diuretics, anti-hypertensives, steroids, decongestants cause problems. zoloft and ambien assist in sleep.
Restless Leg Syndrome:
:creeping, crawling, tingling in legs. People with iron deficiency and end stage renal disease seem to have this, but others as well.
URGE diagnosis for restless leg:
:U - urge to move legs, R - rest-induced, G - gets better with activity, E - evening symptoms more severe.
When 'Disturbed Sleep' is the problem, it receives either of two etiologies -
- 'Disturbed Sleep Pattern' is the problem is time-limited, or 'Sleep Deprivation' if the problem is prolonged.
Etiologies for 'Disturbed Sleep' (common ones):
: Physical discomfort or pain, Emotional discomfort or pain, Changes in bedtime rituals, Disruption of circadian rhythm, * Exercise before sleep, (list is on p. 1095)
When 'Disturbed Sleep' is the etiology, there are many diagnoses that are manifested from it, like -
- Anxiety related to inability to fall asleep, Activity intolerance, *Ineffective coping related to insomnia, (list on p. 1095)
The Cerebral cortex and peripheral sensory organs stimulate the ________to bring about wakefulness.
__reticular activating system__
Circadian synchronization -
When an individual's sleep-wake patterns follow the inner biologic clock.
What is the name of the medical instrument that receives and records electrical currents from the brain?
NREM sleep deprivation is characterized by:
:fatigue, lethargy, depression, and difficulty with ADLs.
The reticular activation system extends___
__upward toward the medulla, the pons, and the midbrain, into the hypothalamus.
During sleep the RAS experiences__
__few stimuli from the cerebral cortex and the periphery of the body.
Characteristics of REM sleep:
:Respirations are irregular and sometimes interspersed with apnea; Metabolism and body temp increase; It constitutes about 20-25% of sleep.
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