ch 43 potter sleep Flashcards
is a cyclical physiological process that alternates with longer periods of wakefulness.
Sleep
familiar rhythm is the 24-hour, day-night cycle known as the
diurnal or circadian rhythm
nerve cells in the hypothalamus control the rhythm of the sleep-wake cycle and coordinate this cycle with other circadian rhythms
suprachiasmatic nucleus (SCN)
influence the pattern of major biological and behavioral functions.
- sleep disorders are caused by a misalignment between the timing of sleep and individual desires or the societal norm.
Circadian rhythms
predictable changing of body temperature, heart rate, blood pressure, hormone secretion, sensory acuity, and mood depend on the maintenance of the
24-hour circadian cycle
Factors such as light, temperature, social activities, and work routines
affect circadian rhythms and daily sleep-wake cycles
All people have biological clocks that synchronize their sleep cycles
biological clocks
, which measures electrical activity in the cerebral cortex;
electroencephalogram (EEG)
which measures muscle tone
electromyogram (EMG)
which measures eye movements provide information about some structural physiological aspects of sleep.
electrooculogram (EOG)
major sleep center in the body is the
hypothalamus
hypocretins (orexins) that promote wakefulness and rapid eye movement (REM) sleep.
hypothalamus secretes
Prostaglandin D2, L-tryptophan, and growth factors
control sleep
located in the upper brainstem contains special cells that maintain alertness and wakefulness
reticular activating system (RAS)
receives visual, auditory, pain, and tactile sensory stimuli.
- cerebral cortex (e.g., emotions or thought processes) stimulate RAS
RAS (reticular activating system)
- The homeostatic process (Process S), which primarily regulates the length and depth of sleep;
- circadian rhythms (Process C: “biological time clocks”), which influence the internal organization of sleep and the timing and duration of sleep-wake cycles, operate simultaneously to regulate sleep and wakefulness
2 processes help to regulate sleep/wake cycles.
nonrapid eye movement (NREM) sleep and rapid eye movement (REM) sleep
two sleep phases
sleep, people progress through four stages during a typical 90-minute sleep cycle.
NREM ( nonrapid eye movement)
Lighter sleep is characteristic of ? when a person is more easily arousable.
stages 1 and 2, NREM ( nonrapid eye movement)
involve a deeper sleep called slow-wave sleep, from which a person is more difficult to arouse
-Called slow-wave sleep.
Combined stages 3 and 4 NREM ( nonrapid eye movement)
sleep is the phase at the end of each 90-minute sleep cycle.
-Stage usually begins about 90 minutes after sleep has begun.
REM (rapid eye movement)
decreases the last sleep stage
Hypothyroidism
causes people to take more time to fall asleep.
hyperthyroidism
which occurs before sleep onset
- CNS disorder.
- risk of lower levels of iron, pregnancy, renal failure, stress, diet, Parkinson’s disease, or a side effect of drugs
restless legs syndrome (RLS)
often awaken in the middle of the night
peptic ulcer disease
gastric acid secretion and stages of sleep are conflicting.
GI conflict with sleep
three problems:
insomnia, abnormal movements or sensation during sleep or when waking up at night, or excessive daytime sleepiness (EDS)
Sleep disorders
which classifies sleep disorders into eight major categories
International Classification of Sleep Disorders version 2 (ICSD-2)
are sleep disturbances that result in daytime sleepiness and are not caused by disturbed sleep or alterations in circadian rhythms
Hypersomnias
are undesirable behaviors that occur usually during sleep.
parasomnias
involves the use of EEG, EMG, and EOG to monitor stages of sleep and wakefulness during nighttime sleep.
polysomnogram
provides objective information about sleepiness and selected aspects of sleep structure by measuring eye movements, muscle-tone changes, and brain electrical activity during at least four napping opportunities spread throughout the day.
-takes 8 to 10 hours to complete
Multiple Sleep Latency Test (MSLT)
on the wrist to measure sleep-wake patterns over an extended period of time such as one week.
-data provide information about sleep time, sleep efficiency, number and duration of awakenings, and levels of activity and rest
Actigraph device
is symptomatic, including improved sleep-hygiene measures, biofeedback, cognitive techniques, and relaxation techniques
Treatment for insomnia
is a disorder in which an individual is unable to breathe and sleep at the same time
-lack of flow 10 seconds to 1 to 2 minutes in length.
Sleep apnea
obstructive; central; and mixed apnea, which has both an obstructive and a central component.
3 types of sleep apnea
, which is a cessation or stopping of airflow despite the effort to breathe
most common form is obstructive sleep apnea (OSA
hypoxic and must awaken to breathe. Structural abnormalities such as a deviated septum, nasal polyps, narrow lower jaw, or enlarged tonsils sometimes
-Obesity and hypertension major risk
leads to obstructive sleep apnea:
involves dysfunction in the respiratory control center of the brain.
- impulse to breathe fails temporarily, and nasal airflow and chest wall movement cease
- common in brainstem injury, stroke, obesity, muscular dystrophy, and encephalitis.
- Mild and intermittent snoring is also present.
Central sleep apnea (CSA)// type of sleep apnea
is a common complaint in people experiencing OSA and CSA.
Excessive daytime sleepiness (EDS)
bilevel positive airway pressure (BPAP or BiPAP), continuous positive airway pressure (CPAP),
- weight-reduction program in people who are obese, improved sleep hygiene
- surgery, and oral repositioning devices for the jaw and tongue
treatments for OSA
is a dysfunction of the processes that regulate sleep and wake states
- most complaint is . Excessive daytime sleepiness
- REM sleep occurs within 15 minutes of falling asleep.
- vivid dreams
- symptom: Sleep paralysis, or the feeling of being unable to move or talk just before waking or falling asleep,
- treated wtih stimulants, antidepressant meds
Narcolepsy
, or sudden muscle weakness during intense emotions such as anger, sadness, or laughter that occurs at any time during the day, is a symptom of narcolepsy type 1, differentiating it from narcolepsy type 2
-lasts only a few seconds
Cataplexy (symptom of Narcolepsy type 1)
is severe, a patient loses voluntary muscle control and falls to the floor
cataplectic attack
associated w/ obesity, type 2 diabetes, poor memory, depression, digestive problems, and the development of cardiovascular disease
sleep deprivation
Physiological Symptoms • Ptosis, blurred vision • Fine-motor clumsiness • Decreased reflexes • Slowed response time • Decreased reasoning and judgment • Decreased auditory and visual alertness • Cardiac arrhythmias
sleep deprivation physiological symptoms
Psychological Symptoms • Confused and disoriented • Increased sensitivity to pain • Irritable, withdrawn, apathetic • Agitated • Hyperactive • Decreased motivation • Excessive sleepiness
sleep deprivation psychological symptoms
are sleep problems that are more common in children
-hypothesized that sudden infant death syndrome (SIDS)
parasomnias
occur among older children include confusional arousals, somnambulism (sleepwalking), night terrors, nightmares, nocturnal enuresis (bed-wetting), body rocking, and bruxism (teeth grinding).
Parasomnias (older children)
they are in a state of mental, physical, and spiritual activity that leaves them feeling refreshed, rejuvenated, and ready to resume the activities of the day.
rest (does not imply inactivity)
age of 3 months averages about 16 hours of sleep a day
-REM sleep which stimulates the higher brain centers
Neonates sleep
usually develop a nighttime pattern of sleep by 3 months of age
- 8 to 10 hours during the night for a total daily sleep time of 15 hours
- 30% of sleep is in REM cycle
Infants
2 children usually sleep through the night and take daily naps
- 12 hours day sleep
- after age 3> give up day time sleep
- fear of sleep bc autonomy or fear separation from their parents
Toddlers
sleeps about 12 hours a night
- REM 20%
- age 5 rarley takes day naps
- awake period the child exhibits brief crying, walking around, unintelligible speech, sleepwalking, or bed-wetting.
preschooler
6-year-old averages 11 to 12 hours of sleep nightly, whereas an 11-year-old sleeps about 9 to 10 hours
-older child often resists sleeping because he or she is unaware of fatigue or has a need to be independent.
school age
teenagers get about 7 hours or less of sleep per night, although the recommended requirement is 8 to 10 hours
-school demands, after-school social activities, and part-time jobs, which reduce the time spent sleeping
Adolescent
6 to 8½ hours of sleep a night
- 20% sleep time REM
- common for the stresses of jobs, family relationships, and social activities to frequently lead to insomnia, and some may use medication to help them sleep
- Pregnancy increases the need for sleep and rest
young adult
First-trimester sleep disturbances include a reduction in overall sleep time and quality
First-trimester sleep disturbances//young adult
Daytime drowsiness, insomnia, and nighttime awakenings also increase because of frequent nocturnal voiding.
second trimester//young adult
Insomnia, periodic limb movements, RLS, and sleep-disordered breathing are common problems during the
third trimester of pregnancy //young adult
7 to 9 hours per night
- night begins to decline.
- Anxiety, depression, or certain physical illnesses cause sleep disturbances.
- Women experiencing menopausal symptoms often experience insomnia.
Middle adults
spend more time in stage 1 and less time in stages 3 and 4
- REM sleep tend to shorten. Older adults experience fewer episodes of deep sleep and more episodes of lighter sleep
- Changes in sleep pattern are often caused by changes in the CNS that affect the regulation of sleep.
- insomnia have co-morbid psychiatric illness or medical conditions, take medications that disrupt sleep patterns, or use drugs or alcohol.
- Sensory impairment reduces an older person’s sensitivity to time cues that maintain circadian rhythms.
older adults
subjective experience
sleep
Hunger, excessive warmth, and separation anxiety
disturb infant sleep
contains eight questions about the likeliness of a patient being sleepy during certain activities (e.g., watching television, reading, sitting and talking with someone) on a scale of 0 (would never doze or sleep) to 3 (high chance of dozing or sleeping). A score of 0 to 5 indicates lower normal daytime sleepiness; 6 to 10 is considered higher than normal daytime sleepiness; a score of 11 or 12 is mild excessive daytime sleepiness; 13 to 15 is moderate excessive daytime sleepiness; and a score of 16 to 24 is severe excessive daytime sleepiness
Epworth Sleepiness Scale (tool assess sleepiness)
assesses sleep quality and patterns
Pittsburgh Sleep Quality Index(tool assess sleepiness)
effective method for assessing sleep quality is the use of a
-straight horizontal line 100 mm (4 inches) long. Opposing statements such as “best night’s sleep” and “worst night’s sleep” are at opposite ends of the line. Ask patients to place a mark on the horizontal line at the point corresponding to their perceptions of the previous night’s sleep
visual analog scale. (assess quality of sleep)
-used for individual pt not comparison
is a reliable evidence-based tool used to screen for OSA and is frequently used in preanesthesia and/or preoperative assessments
STOP-BANG sleep assessment tool
irritability, disorientation (similar to a drunken state), frequent yawning, and slurred speech
-sometimes delusions and paranoia
sleep deprivation behaviors
dairy product such as warm milk or cocoa that contains L-tryptophan is often helpful in promoting sleep.
snacks increase sleep
Coffee, tea, colas, and chocolate
drinks act as stimulants (dont have before bed time)
Caffeinated foods and liquids and alcohol act as
caffeine act as diuretics
is a neurohormone produced in the brain that helps control circadian rhythms and promote sleep
Melatonin
dose is 0.3 to 3 mg taken 2 hours before bedtime
side effects of nausea, headache, and dizziness being infrequent.
receptor agonist: ramelteon or tasimelteon-// side effect : diarrhea, drowsiness, tiredness and dizziness.
Melatonin supplement (promote sleep/ herbal)
who have decreased levels of melatonin find it beneficial as a sleep aid
Older adults melatonin
effective in mild insomnia and RLS. (restless leg syndrome)
Valerian (herbal product help sleep)
essential oil may improve sleep quality
Lavender (oil help w/sleep)
has mild sedative effects and is used as a natural sleep aid
Passionflower (maypop) //herb
an herbal tea, has a mild sedative effect that may be beneficial in promoting sleep
Chamomile
because of their long duration of action, which can cause confusion, constipation, urinary retention, and an increased risk of falls
Caution older adults about using over-the-counter antihistamines
sleep deprivation
cause delirium
Teach the patient to elevate the head of the bed and use a side or prone position for sleep.
OSA
use CPAP
sleep apnea
Elevating their feet on an ottoman or small bench may help to position them safely.
people experience EDS
- become easily fatigued and experience periods of insomnia
- shorten activities and visits to allow patients to maintain an adequate energy level
- wakes up during the night, keeping the lights at a low level
- use music technique or back rub
pt w/ dementia >help improve sleep
- after meals experience gastric reflux
- prevent sleep disturbances: eat small meal several hrs before bed time
- sleep in semi-sitting position
- time medications
hiatal hernia
need to be used sparingly and under medical management
CNS stimulants such as amphetamines, caffeine, nicotine, terbutaline, theophylline, and modafinil
such as alcohol, barbiturates, tricyclic antidepressants (amitriptyline, imipramine, and doxepin), and triazolam causes insomnia
CNS depressants cause insomnia
Medications that induce sleep are called
hypnotics
are medications that produce a calming or soothing effect
Sedatives
are commonly used to treat sleep problems and are intended for short-term use
- treat insomnia
- relaxation, antianxiety, and hypnotic effects by facilitating the action of neurons in the CNS =decrease level of arousal
Benzodiazepines and benzodiazepine-like drugs
acting medication such as ? for short-term use (no longer than 2 to 3 weeks)
zolpidem (Ambien)