sleep Flashcards
sleep hygiene
sleep schedule exercise diet sleep environment bedtime routine
promote sleep hygiene inpatient setting
- routine - allow 90-120 mins uninterrupted sleep
- noise
- evening care
nonpharmacologic interventions
- insomnia - cognitive therapy
- hypersomnia- correct underlying med cond
- narcolepsy- exercise, reg sleep routines, light meals protein/vitamins
- obstructive sleep apnea- sleep hygiene and weight-loss, CPAP
- restless leg syndrome- decrease caffeine and alcohol
- sleep terrors- schedule and sleep hygiene, hypnosis, relax and cog bx therapy
Which pharmacologic interventions would the nurse suggest for a patient with chronic insomnia who prefers to use supplements over medications?
melatonin
valerian
Which statement made by a patient after education regarding the safe administration of common sleep medications indicates a need for further teaching?
“Maybe I should take a higher dose of antidepressants since it is my first time taking them for my sleep problems.”
This statement shows a need for further teaching. Antidepressants used for sleep assistance are prescribed at lower, not higher, dosages for patients who are not clinically depressed and are taking them solely for sleep assistance.
recommended time sleep
7 hrs
sleep structures
- basal forebrain- releases adenosine, which supports the sleep drive. Caffeine blocks the action of adenosine.
- pineal gland- secretes the hormone melatonin. This hormone helps the body regulate a sleep cycle that correlates with day and night cycles.
- thalamus- relays sensory information to the cerebral cortex for conversion from short-term to long-term memory. This occurs during REM sleep; otherwise, the thalamus is quiet. The thalamus is a paired gray matter structure.
- hypothalamus- receives information from the eyes regarding light exposure. This information helps determine a sleep schedule based on day or night. The hypothalamus secretes hypocretins, which promote both wakefulness and rapid eye movement (REM) sleep.
amygdala- processing emotions. It is most active during REM sleep. The amygdala is a paired structure.
brain stem- communicates transitions between sleep and wake times with the hypothalamus. During sleep, both structures produce chemicals that reduce arousal centers, and they also send signals to relax muscles. This is in effort to keep the body still and asleep.
neurotransmitters and hormones sleep
- Acetylcholine (ACh) receptors in the pons and basal forebrain are important in the initiation of REM sleep.
- Norepinephrine (NE) is an important neurotransmitter and hormone involved in the sleep-wake cycle. In high levels, it can decrease REM sleep.
- Serotonin is similar to NE in its effect on arousal and inhibiting REM sleep.
Gamma aminobutyric acid (GABA) is released by the hypothalamus in an effort to induce sleep. - Histamine acts as a neurotransmitter in the central nervous system to promote wakefulness.
- Adrenaline, also known as epinephrine, is a hormone released in response to stress that increases alertness.
- Cortisol is a stress hormone that helps maintain homeostasis.
- Melatonin is secreted by the pineal gland and regulated by the hypothalamus based on the amount of light in the environment.
- Hypocretins are produced by the hypothalamus and keep the brain active during wakefulness.
- Glutamate is the main excitatory neurotransmitter and is the precursor to GABA.
- Dopamine regulates motor function and can downregulate melatonin.
- Growth hormone–releasing hormone (GHRH) causes the release of growth hormone for the purpose of repairing damaged tissues.
- Corticotropin-releasing hormone (CRH) promotes wakefulness and inhibits REM sleep.
- Adenosine is a neurotransmitter that promotes sleep.
physiologic and psychologic effects sleep
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sleep cycle (90 min intervals)
2 cycles: 3 stages nonrapid eye movement (NREM) and rapid eye movement (REM)
nrem
nrem 1:
- Lightest level of sleep, between sleep and wakefulness
- Vital signs and metabolism begin to decrease/slow down
- Easy arousal by external stimuli, such as noise
- Feeling of drowsiness
- Lasts a few minutes
- May occur during the day as “resting my eyes”
nrem 2:
- Relaxation increases
- Sleep becomes deeper
- Snoring may occur
- Relatively easy arousal
- Physiologic functions continue to slow
- Accompanied by occasional small muscle jerks
- Lasts 10–20 minutes
nrem 3:
- Deepest stage of sleep, called slow-wave or delta wave sleep for the type of brain waves seen during this type of sleep
- More difficult arousal and rare movement
- Muscles relaxed
- Vital signs decrease but regular rhythms/patterns maintained
- Restorative processes (such as the release of growth hormone) occur
- Sleepwalking (somnambulism) and nocturnal enuresis may occur
- Strong stimuli needed for arousal
- Amount of time spent in slow-wave sleep depends on how long since a person slept
- Lasts approximately 30–60 minutes
rem
Occurrence of vivid, colorful dreaming (less vivid dreaming may occur in other stages)
Starts approximately 90 minutes after sleep is initiated
Autonomous response causes rapid eye movements, fluctuating heart rate and respirations, and increased blood pressure
Muscle tone decreased
Gastric secretions increased
Very difficult arousal
Duration of REM sleep increases with each sleep cycle and averages 20 minutes
dreams
Dreams function to process memories, adapt to stress, and sort out immediate concerns.
- REM dreams are often elaborate, vivid, and emotional.
- NREM dreams, when they occur, are more conceptual and less emotional.
- Research indicates that REM sleep is not vital for human survival, but NREM sleep is essential.
- Monoamine oxidase (MAO) inhibitors may cause a person to have very little REM sleep, but these patients show no adverse effects from REM deprivation.
factors affect sleep
relationships lifestyles diet and exercise smoking alcohol stimulants and other meds envir factos
lifespan sleep patterns
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