Transcript Insomnia - Bath Dept of General Practice

Insomnia
Simon Tucker
Swindon/Bath GP Registrar DRC
September 2005
What is it?
• Trouble falling asleep, staying asleep, waking too
early, or not feel rested after sleep.
• Most adults need about 7-8 hrs a night, as we age,
sleep patterns change, sleep less at night and take
naps in the day.
Types of insomnia
• Transient insomnia
• <4/52, triggered by excitement or stress, occurs
when away from home
• Short-term
• 4/52-6/12, ongoing stress at home or work,
medical problems, psychiatric illness
• Chronic
• Poor sleep every night or most nights for > 6/12,
psychological factors (prevalence 9%)
Medical problems
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Depression
Hyperthyroidism
Arthritis, chronic pain
Benign prostatic hypertrophy
Headaches
Sleep apnoea
Sleep related periodic leg movement, Restless
legs
• GOR
Other factors
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Caffeine
Nicotine
Alcohol
Exercise
Noise
Light
Hunger
The bedroom
• Temperature, fresh air
• S&S
• Comfortable bed
C.B.T. & insomnia
• Over 40yrs research has shown C.B.T is
effective in treatment insomnia but effect is
not as great then when applied to other
psychological disorders.
Stimulus control
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Go to bed when sleepy
Only S & S in bedroom
Get up the same time every morning
Get up when sleep onset does not occur in 10 min,
and go to another room
• No daytime napping
– Rational is that insomnia in the result of maladaptive
conditioning between the environment (bedroom) and
sleep incompatible behaviours. Aim is to reverse this –ve
association by limiting the sleep incompatible behaviours
engaged within the bedroom environment.
» Richard Bootzin 1972
Sleep hygiene
– Education about behaviours that interfere with
sleep
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Caffiene
Alcohol
Nicotine
Day time napping
Exercise < 4hrs before bed
– “education” is followed by monitoring of “sleep-unfriendly”
behaviours to improve compatibility of patients lifestyle
with sleep.
Relaxation training
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Progressive muscle relaxation
Diaphragmatic breathing
Autogenic training
Biofeedback
Meditation
Yoga
Hypnosis
» Reduce anxiety and tension at bedtime
Sleep restriction
• Sleep record for 2/52, calculate the average total
asleep time (ATST)
• Time in bed (TIB) = ATST + 30 min
• TIB increased every few weeks by 15 min if
sleeping well but still having daytime sleepiness
– Grew out of observation that insomniacs stay in bed
hoping this will produce more sleep time, instead it
breaks up sleep over a longer time period and increases
frustration
» Arthur Spielman.1987
Thought stopping
• Interrupt unwanted pre-sleep cognitive
activity by instructing patient to repeat subvocally “the” every 3 sec (articulatory
suppression)
• or to yell sub-vocally “stop” (thought
stopping)
Paradoxical intention
– Explicit instruction to stay awake when they
go to bed
– Aim is to reduce anxiety associated with trying to fall
asleep
Cognitive restructuring
• Alter irrational beliefs about sleep, provide
accurate information that counteracts false
beliefs.
Imagery training
– Patient imagines 6 common objects (candle,
hourglass, blackboard, kite, light bulb, fruit)
– Emphasis on imagining shape, colour, texture
Drugs
• Benzodiazepines (GABA rec. agonist)
– Transient insomnia, (max 2/52, ideally 2-3/7)
» Long ½ life, nitrazepam
» Med ½ life temazepam
» Short ½ life diazepam
– Poor functional day time status, cognitive impairment,
daytime sleepiness, falls and accidents, depression,
dependence (DTB Dec 04)
– Acute withdrawal, confusion, psychosis, fits, D.T’s
» May occur up to 3/52 from stopping
Z drugs
– Act at the benzodiazepine receptor
• Less risk of dependence
– Zaleplon short ½ life
– Zolipidem, Zopiclone slightly longer ½ life
– NICE 2004
» No consistant difference found for effectiveness and
safety
» More expensive
» Only use if adverse effects to BZP
Other drugs
• TCA
• Amitriptyline, if depression also an issue
• Antihistamines
• Promethazine OTC
• Chloral hydrate
melatonin
• Hormone secreted by pineal gland, effects
circadian rhythm, synthesised at night
• Use to counteract jet lag (2-5mg @ bedtime for 4
night nights after arrival, Cochrane)
• Used in paediatric sleep disorders (severe learning
difficulties, visually handicapped.)
– Can’t be prescribed
What about kids?
Controlled crying
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From 9/12
Bedtime routine
Regular bedtime, say goodnight
Leave to cry, checking every 5 – 10 – 15 min, (may
also need a graded withdrawal phase)
Works for bed time and middle night waking
during checks, minimal stimulation
can work in 3/7
Maternal instinct is main barrier to effectiveness
bibliography
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Americaninsomniaassociation.org
Familydoctor.org
Gpnotebook.co.uk
Cognitive behavioural therapy for primary
insomnia: can we rest yet? Harvey A, Tang N.
Sleep medicine reviews Vol 7, No3, 237-262, 2003
• BNF