Sleep Disorders: Assessment and Therapeutic...
Transcript of Sleep Disorders: Assessment and Therapeutic...
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Sleep Disorders: Assessment and Therapeutic
Options
John W. Winkelman MD, PhD Chief, Sleep Disorders Clinical Research Program
Departments of Psychiatry and Neurology Massachusetts General Hospital
Professor of Psychiatry Harvard Medical School
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Disclosure Information
Type of Affiliation Commercial Entity Consultant/Honoraria Advance Medical FlexPharma Merck UpToDate Research Grant NIMH 1R01MH095792 Luitpold NeuroMetrix RLS Foundation UCB
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Most sleep problems are usually transient but 30% last > 1 year
Roth et al, Biol Psych 2006
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Sleep disorders
• Insomnias – Insomnia, psychiatric/medical disorders, RLS,
medications
• Hypersomnias – Sleep apnea, medications, Periodic leg movements of sleep
• Parasomnias – Sleepwalking, sleep terrors, REM sleep behavior disorder
• Circadian rhythm disorders – Shift work sleep disorder, Delayed sleep phase disorder
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DSM-5 Insomnia disorder • Dissatisfaction with sleep quality or quantity associated with
(at least one of): – difficulty initiating sleep – difficulty maintaining sleep – early morning awakening
• Distress or dysfunction related to sleep disturbance • Minimum of 3x/wk for 3 months • The insomnia does not co-occur with another sleep disorder • The insomnia is not explained by coexisting mental disorders
or medical conditions
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Chronic Insomnia Requires a Thorough Evaluation
Symptoms Differential Diagnosis Treatment Diagnosis
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Sleep quality is only as strong as the weakest link and many insomniacs have
many sleep-related issues
All contributing factors must be treated to achieve maximum benefit
Psychiatric Illness(es)
Primary Sleep
Disorder(s)
Medical Illness(es)
Medication(s)
Poor sleep Hygiene/stress
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Differential diagnosis of chronic insomnia
• Primary psychiatric disorders
• Medications
• Substances
• Medical disorders
• Restless Legs Syndrome (RLS)
• Sleep schedule disorders
• Obstructive sleep apnea
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Common cognitive and behavioral issues which can produce/worsen insomnia (cause or consequence of insomnia?)
• Inconsistent bedtimes and wake times • “Dozing” in evening before bed • Excessive time in bed “squeezing out” more sleep • Sleep-related anxiety (insomniaphobia) • Unrealistic expectations of total sleep time, onset
and maintenance of sleep • Clock watching • Use of electronics in bedroom • Inappropriate attributions of daytime issues to sleep
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All psychiatric disorders produce insomnia
Mania > Schizophrenia > Depression and
Anxiety Disorders
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0 10 20 30 40 50 60
No Psychiatric Disorder
Anxiety Disorders
Major Depression
Dysthymia
Alcohol Abuse
Other Psychiatric Disorder
Drug Abuse
Ford DE, Kamerow DB. JAMA. 1989;262:1479-1484.
% of Respondents
4.2%
5.1%
7.0%
8.6%
14.0%
23.9% 59.5%
However, psychiatric disorders are present in only 30-40% of those with insomnia
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Independent treatment of insomnia in major depression
improves depression treatment outcome
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Sleep disturbance is the most common persistent symptom in treated MDD
Symptoms
Perc
enta
ge o
f Sub
ject
s
0
10
20
30
40
50
Mood Interest Weight Sleep Psycho- motor
Fatigue Guilt Concen- tration
Suicidal Ideation
Subthreshold Threshold
MDD = Major depressive disorder. Nierenberg AA et al. J Clin Psychiatry. 1999.
**25% had treatment-emergent onset of nocturnal awakenings (Nierenberg et al, 2012)**
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Persistent insomnia in treated MDD: sleep disorder or mood disorder?
• Fatigue • Loss of interest • Sleep disturbance • Depressed mood • Impaired
concentration • Worry • Agitation • Irritability • Suicidality
Insomnia Major
Depressive Disorder
•inadequately treated MDD •treatment-induced insomnia •pre-existing independent (or primary) insomnia •combination of above
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•PTSD is a disorder with an essential difficulty maintaining states of decreased vigilance
•PTSD will therefore nearly always interfere with sleep
•Specific questions as to the circumstances of traumatic episodes (eg night, bedroom) may shed light on sleep disturbance
•Treatments: - education as to relationship of PTSD to sleep disturbance - safety of sleep environment - judicious use of hypnotics - prazosin or Image Rehearsal Therapy for nightmares
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INSOMNIA RELATED TO
MEDICATIONS
• Antidepressants
• Stimulants
• Steroids, bronchodilators
• Decongestants
• Dopaminergic antagonists (akathisia)
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Stimulant pharmacokinetics are not kind to sleep
Adderall 30 XR 30 mg
XR Adderall 20 XR
IR
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Insomnia in the elderly is not related to age, but to medical illness
• Cardiac: angina, PND
• Pulmonary: COPD, coughing
• GI: Nocturnal reflux
• Musculoskeletal pain
• Endocrine: Hypo/ hyperthyroidism, diabetes, menopause
• Neurologic: Dementia, Parkinson’s, CVA, migraine
• Urinary: Nocturia, renal failure
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LICIT SUBSTANCES
• Caffeine – Sleepiness can overcome stimulant effects,
but awakenings are common • Alcohol
– produces 3-4 hours of good sleep, followed by increased wakefulness in 2nd half of night
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Treatment of RLS
• Modify reversible causes – Iron Deficiency (keep Ferritin > 50)
– Medication-Induced (SRIs, DA antagonists, antihistamines)
• Pharmacologic approaches – Dopaminergic agonists (pramipexole, ropinirole, rotigotine patch)
but watch for iatrogenic worsening of RLS (“augmentation”)
– Alpha 2 delta ligands (gabapentin, pregabalin)
– Opioids (oxycodone, methadone)
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Sleep schedule disorders
• Delayed Sleep Phase Syndrome – Most common in adolescents – Initial insomnia and difficulty awakening in
AM – Daytime sleepiness
• Advanced Sleep Phase Syndrome – Most common in the elderly – Early AM awakening
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Conditioned insomnia is present to some degree in all with chronic
insomnia
Many people with insomnia have negative associations and anxiety regarding sleep initiation ("insomnia phobia") which perpetuate insomnia
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Winkelman JW. Insomnia Disorder. New England Journal of Medicine, 2015
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The complex neurochemistry of sleep provides many treatment options
Ascending arousal pathways Descending inhibitory pathways
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Pharmacologic Treatments for Insomnia
• Benzodiazepine receptor agonists (BzRAs)
• Melatonin agonists
• Orexin antagonist
• Sedating antidepressants
• Anticonvulsants
• Dopaminergic antagonists (eg antipsychotics)
• Miscellaneous (eg prazosin, clonidine, hydroxyzine)
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Bertisch SM, et al. Sleep. 2014
Medications Commonly Used for Insomnia (MCUFI) Hypnotic usage: NHANES, 1999-2010
Any MCUFI
Zolpidem
1.5
1
0.5
0
2
2.5
3
3.5
Trazodone Benzo Quetiapine Doxepin
% o
f US
popu
latio
n (e
stim
ate)
Use during the the past month: 55% of hypnotic users took ≥ 1 other sedating medication (e.g.
opioids, BzA) 10% took ≥ 3 other sedating medications 19.2% said they took ≥ 1 ANY sleep medication , OTC or
other
N = 32,328 Age: ≥ 20 y/o
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Benzodiazepine-Receptor Agonists (BzRA) Commonly Used as Hypnotics
Agent (brand name) Dose range Half-life
Clonazepam (Klonopin) 0.25 -1.0 mg 40 hr
Temazepam (Restoril)* 7.5-30 mg 4-18 hr
Lorazepam (Ativan) 0.5-2.0 mg 10-20 hr
Oxazepam (Serax) 10-30 mg 5-10 hr
Eszopiclone (Lunesta) 1-3 mg 5.5-8 hr
Triazolam (Halcion)* 0.125-0.25 mg 2-3 hr
Zolpidem (Ambien) 3.75-12.5 mg 2-3 hr (CR extends duration of action)
Zaleplon (Sonata) 5-10 mg 1-2 hr
*FDA approved for insomnia.
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Do z-drugs work for insomnia?
Effects modified by higher dose, younger age, female sex
Huedo-Medina et al, BMJ, 2012
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Do benzodiazepines
work for insomnia?
Buscemi et al, JGIM, 2007
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“Are sleeping pills addictive?”
“Substance use disorders occur when their recurrent use causes clinically and functionally significant impairment, such as health problems, disability, and failure to meet major responsibilities at work, school, or home.” - DSM 5
• Tolerance
• Physiological dependence
• Psychological dependence
• Non-medical diversion
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The Current Status of BzRA Risks in the Treatment of Insomnia
• Motor vehicle accidents in elderly: long T1/2 agents • Hip fractures in elderly: long T1/2 agents? • Anterograde amnesia: T1/2 dependent • Abuse: rarely seen outside of drug abusers • Tolerance: no evidence from recent 12- and 26-week
studies • Rebound insomnia: depends upon dose, duration of use,
and speed of taper
Hemmelgarn B et al. JAMA. 1997;278:27-31. Cumming RG, Le Couteur DG. CNS Drugs. 2003;17:825-837. Woods JH, Winger G. Psychopharmacology. 1995;118:107-115. Krystal AD et al. Sleep. 2003;26:793-799.
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Benzodiazepines do increase risk for dementia
Billioti de Gage et al, BMJ, 2014
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Benzodiazepines do not increase risk for dementia
Gray et al, BMJ, 2016
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Benzodiazepines do not increase mortality risk
Patorno et al BMJ 2017: Conclusions This large population based cohort study suggests either no increase or at most a minor increase in risk of all cause mortality associated with benzodiazepine initiation. If a detrimental effect exists, it is likely to be much smaller than previously stated and to have uncertain clinical relevance. Residual confounding likely explains at least part of the small increase in mortality risk observed in selected analyses.
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Orexin antagonist in theTreatment of Insomnia
Suvorexant
• Advantages: little abuse liability, 1-year efficacy data (at 40 mg), few side effects
• Disadvantages: unclear efficacy vs BzRAs, prior authorization/expense
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Antidepressants in theTreatment of Insomnia
Mirtazapine, Trazodone, Amitriptyline, Doxepin
• Advantages: little abuse liability • Disadvantages: probably not as effective
as BzRAs, daytime sedation, weight gain, anticholinergic side effects, switch into mania in bipolar disorder
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Atypical Antipsychotics in the Treatment of Insomnia Quetiapine
• Advantages: anxiolytic, mood stabilizing in bipolar disorder, little abuse liability
• Disadvantages: less effective than BzRAs, daytime sedation, weight gain, risks of extrapyramidal symptoms and glucose + lipid abnormalities
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Anticonvulsants in the treatment of Insomnia
Gabapentin
• Advantages: little abuse liability, efficacy in ETOH • Disadvantages: less effective than BzRAs,
cognitive impairment, daytime sedation, dizziness, weight gain
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Issues with Non-BzRA Hypnotics in the Treatment of Insomnia
(eg antidepressants, anticonvulsants, antipsychotics)
• Paucity of short-term efficacy data • Absence of long-term efficacy data • Assumptions of lack of tolerance and rebound
insomnia are unsubstantiated • Anecdotally less effective hypnotics than BzRAs • May have deleterious side effects
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Sleep disorders
• Insomnias – Insomnia, psychiatric/medical disorders, RLS,
medications
• Hypersomnias – Sleep apnea, medications, Periodic leg movements of sleep
• Parasomnias – Sleepwalking, sleep terrors, REM sleep behavior disorder
• Circadian rhythm disorders – Shift work sleep disorder, Delayed sleep phase disorder
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Differential diagnosis of hypersomnia
• “Tired”: – excessive daytime sleepiness (EDS) – fatigue – apathy
• If EDS:
– inadequate sleep time – impaired sleep quality (eg OSA) – excessive sleep drive (eg medications, narcolepsy)
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Insomnia is more common than daytime sleepiness in those with sleep apnea
Bjornsdottir et al Sleep 2013
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Indications for Home Sleep Testing or polysomnography
Suspicion of sleep apnea (loud snoring PLUS one of the following):
• daytime sleepiness • witnessed apneas • refractory hypertension
Abnormal behaviors or movements during sleep Unexplained excessive daytime sleepiness Refractory sleep complaints, particularly repetitive
brief awakenings
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Physical exam (kind of) predicts likelihood of sleep apnea
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Berlin questionnaire (kind of) predicts sleep apnea
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OSA treatments
Weight loss, upper airway surgery, positional treatment
Positive Airway Pressure (PAP)
Auto-PAP allows both diagnostic and titration to be performed in the home (no sleep lab necessary)
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CPAP for obstructive and central sleep apnea: cardiovascular conclusions
Drager et al, 2017, Circulation
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CPAP for OSA: effects on sleepiness, mood and quality of life
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Reflection
Key Points: • Treatment of chronic insomnia and excessive daytime sleepiness first
requires thoughtful differential diagnosis • Cognitive-behavioral therapy is first-line treatment for insomnia • There are many available medication therapies for insomnia, and a detailed
discussion of their benefits and risks is indicated
Next Best Steps: • Ask all patients if they are satisfied with their sleep • Make a separate appointment to discuss sleep problems and their causes • Home sleep testing is indicated for those with a suspicion of sleep apnea