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Evidence-Based Reviews


Put your patients to sleep: Useful nondrug strategies for chronic insomnia

Sleep diaries and dispelling dysfunctional beliefs may be as effective as hypnotics.

Vol. 7, No. 10 / October 2008

Ms. H, age 53, has a 20-year history of recurrent major depressive disorder. She seeks treatment for insomnia; her primary complaint is that “no medicine has really ever helped me to sleep for very long.” She reports that every night she experiences a 2-hour sleep onset delay and an average of 5 awakenings that last 10 to 60 minutes each. Her mood is stable.

After failed trials of zolpidem, mirtazapine, amitriptyline, and sertraline plus trazodone, she improves with quetiapine, 50 mg at bedtime, plus sertraline, 150 mg at bedtime. Unfortunately, over the next 6 months Ms. H gains 20 pounds and her physician becomes concerned about her fasting serum glucose levels, which suggest borderline diabetes.

After Ms. H discontinues quetiapine, onset and maintenance insomnia remain clinically significant. Polysomnography reveals moderately loud snoring, a normal respiratory disturbance index of 4.5 per hour, no periodic leg movements of sleep, 32-minute sleep onset, total sleep time of 389 minutes (6.5 hours), and a sleep efficiency of 72%. Ms. H estimates that it took her 120 minutes to fall asleep and that she slept only 270 minutes (4.5 hours) of the 540 minutes (9 hours) in bed. The sleep specialist recommends cognitive-behavioral therapy for insomnia.

For some chronic insomnia patients—such as Ms. H—pharmacotherapy is ineffective or causes intolerable side effects. In any year, >50% of adults in the general population report experiencing difficulty falling asleep, staying asleep, early awakening, or poorly restorative sleep, but these symptoms are usually time-limited and have only a small impact on daytime alertness and function. Chronic insomnia, on the other hand, lasts ≥1 month and has substantial impact on daytime alertness and attention, cognitive function, depressed and anxious mood, and focused performance (Box).1

Medications used to treat insomnia include FDA-approved drugs such as eszopiclone and zolpidem and off-label agents such as mirtazapine and trazodone. The cognitive, behavioral, and other nonpharmacologic therapies described below can be effective options, either alone or in combination with medication.

Box

Chronic insomnia: Clock watching by the numbers

One in 10 adults in industrialized nations experiences chronic insomnia. Women are affected twice as often as men, with higher rates also reported in older patients and those in lower socioeconomic groups.

Among adults with chronic insomnia, 35% to 45% have psychiatric comorbidities, such as anxiety or mood disorders, and 15% have primary insomnia—sleep disturbance with no identifiable cause, which traditional medical literature described as conditioned or psychophysiologic insomnia.

In the remaining cases, chronic insomnia is associated with:

  • medical and sleep disorders (restless legs syndrome, periodic leg movements of sleep, and sleep apnea)
  • general medical disorders, particularly those that cause pain
  • use of medications that disrupt normal CNS sleep mechanisms.

Source: Reference 1

Assessing insomnia

Start by performing a thorough assessment and history. I have described this process in previous reviews,1,2 as has Neubauer in Current Psychiatry.3

Before initiating therapy for insomnia, assess and address the following:

  • significant ongoing depression, mania, hypomania, generalized anxiety, panic, or obsessive-compulsive symptoms that impact sleep
  • primary medical disorders of sleep, including restless legs syndrome, increased motor activity during sleep such as periodic leg movements of sleep, and the snoring/snorting of sleep apnea
  • prescribed or self-administered medications or substances that can disrupt sleep, such as alcohol, caffeine, stimulants, corticosteroids, or beta blockers.

Recommended nondrug therapies

In 2006, the Standards of Practice Committee of the American Academy of Sleep Medicine (AASM) updated a comprehensive literature review of psychological and behavioral treatments of primary and secondary insomnia. On the basis of this peer-reviewed, graded evidence, the AASM recommended:

  • stimulus control therapy
  • relaxation training
  • cognitive-behavioral therapy for insomnia (CBTi).4

The AASM also offered guidelines for sleep restriction therapy, multi-component therapy without cognitive therapy, paradoxical intention, and biofeedback. Evidence for sleep hygiene, imaging training, or cognitive therapy alone was insufficient, and the AASM neither recommended nor excluded these methods. Psychological and behavioral interventions were considered effective for treating insomnia in older adults and patients withdrawing from hypnotics.

Stimulus control therapy. Bootzin et al5 first evaluated stimulus control therapy for conditioned insomnia (subsequently identified as primary insomnia). This therapy’s goal is to interrupt the conditioned activation that occurs at bedtime. Patients are instructed to:

  • go to bed when sleepy
  • remain in bed for no more than 10 minutes (20 minutes if elderly) without sleeping
  • if unable to sleep, get up, do something boring, and return to bed only when sleepy
  • repeat getting up and returning as frequently as necessary until sleep onset.

For the first 2 weeks of stimulus control therapy, patients are required to self-monitor their sleep behaviors using a sleep diary. Stimulus control therapy is beneficial for primary insomnia and insomnia related to anxious preoccupation. About 70% of patients with conditioned insomnia will improve using stimulus control therapy,4 but it is not clear whether the primary effective intervention is:

  • patients dissociating conditioned responses at bedtime, or
  • the inevitable sleep restriction caused by getting out of bed.

Relaxation training. Progressive muscle relaxation is a common behavioral treatment of insomnia. Patients learn to tense and then relax individual muscles, beginning at the feet or head and working their way up or down the body. Patients are taught the difference between tension and relaxation to facilitate a relaxation response at bedtime. Another method is the body scanning technique, in which the patient “talks” to each body part, telling it to “relax… relax… relax.”

Relaxation training is predicated on the belief that insomnia is caused by somatized tension and psychophysiologic arousal. The greatest challenge to effective relaxation training is that patients need extensive daytime practice before they can bring the method to the bedroom.

Remind patients that “practice makes perfect.” Therapists often instruct patients to start practicing their relaxation method during the day while self-monitoring by sleep diary and restricting time in bed at night.2

CBTi is the most extensively investigated nonpharmacologic therapy for insomnia.6 It has been used to effectively manage comorbid insomnia in patients with psychiatric disorders,7,8 such as depression,9 generalized anxiety,10 and alcohol dependence,11 as well as those with breast cancer,12 traumatic brain injury,13 and fibromyalgia.14 Age does not appear to be a limitation; research trials show the technique is effective in elderly patients.15

CBTi incorporates cognitive strategies and behavioral interventions to improve sleep quality. Patient self-monitoring with sleep diaries and worksheets is essential.

CBTi commonly is provided in 5 to 8 sessions over 8 to 12 weeks, although studies have described abbreviated practices that used 2 sessions16 and CBTi delivered over the Internet.17 Highly trained clinical psychologists are at the forefront of therapy, but counselors and nurses in primary care settings have administered CBTi.18 For primary insomnia, CBTi is superior in efficacy to pharmacotherapy:

  • as initial treatment19
  • for long-term management4
  • in assisting discontinuation of hypnotic medication.20

CASE CONTINUED: An effective approach

You refer Ms. H to a clinical psychologist who specializes in CBTi. Ms. H begins self-monitoring with a sleep diary and has 5 CBTi sessions over 8 weeks. Initial interventions reduce time in bed from 9 hours to 7 hours per night. Ms. H learns simple relaxation methods that she practices for 2 weeks before attempting to use them to sleep. The psychologist addresses her dysfunctional beliefs about sleep.

During the last 2 weeks of therapy, Ms. H’s sleep diary reveals a sleep efficiency of 92% and improvements in well being, energy, and perceived work efficiency. At a 3-month booster visit, Ms. H has sustained these gains in sleep and daytime function.

Implementing nondrug therapy

I recommend the following steps when offering psychological and behavioral treatment of chronic insomnia, such as CBTi.

Initial visit. Determine whether your patient needs treatment for depressive or anxiety symptoms. Assess the need for polysomnography. Does the patient have a history of an urge to move the legs (restless legs syndrome), increased kicking behavior at night (periodic leg movements of sleep), or loud, disruptive snoring (obstructive sleep apnea)? It is often helpful to have patients think back to when they were consistently sleeping well to identify factors that might be exacerbating poor sleep.

Session 1 (Week 0). Teach patients about normal sleep, how it changes over the life cycle, and common dysfunctional beliefs and behaviors that worsen sleep. Tell patients that every morning when they wake up they should complete a sleep diary (Table 1); you can download a sample sleep diary by visiting this article on CurrentPsychiatry.com.

Table 1

Insomnia: What to document on a sleep diary

Daytime fatigue

Minutes spent napping

Medication use

Time the patient first tried to fall asleep

How long it took to fall asleep

How many times the patient woke up

Final waking time

Hours slept

Sleep quality rating

How refreshed the patient feels on awakening

Session 2 (Week 1). Review the sleep diary. Address infractions of sleep hygiene, such as working until bedtime, using caffeine or alcohol in the evening, excessive smoking, or eating in bed. Discuss and specify mutual therapeutic goals for:

  • minutes to sleep onset
  • minutes of nighttime wakefulness
  • number of awakenings
  • improvements in sleep efficiency, morning refreshment/alertness, and daytime functioning.

Therapeutic intervention: Instruct patients to reduce their total time in bed (TIB) to their estimated total sleep time, unless they report <6 hours. Insomnia patients commonly overestimate their amount of wakefulness. Because research indicates daytime performance is adversely affected when sleep falls below 6 hours per night,21 I initially limit TIB to 6 hours and further restrict TIB in future sessions as needed to improve sleep efficiency.

Session 3 (Week 2). Review the sleep diary, and calculate the average time to sleep onset and sleep efficiency (divide total minutes of reported sleep by the total minutes spent in bed). Typical goals include an average onset of 10 to 20 minutes and an average efficiency of >90%.

Therapeutic intervention: If sleep efficiency falls below 80%, further restrict TIB by 15 minutes; if sleep efficiency is >90%, increase TIB by 15 minutes (no TIB change is needed with efficiencies between 80% and 90%). Identify dysfunctional beliefs about sleep, and provide strategies to interrupt cognitive overactivation—the pressured “talking to oneself” in hopes of falling asleep.

Session 4 (Week 3). Review the sleep diary, and calculate the average time to sleep onset and sleep efficiency. Increase or decrease TIB based on sleep efficiency as described above. Determine if the patient has dysfunctional beliefs regarding sleep.

Therapeutic intervention: Reframe the patient’s dysfunctional beliefs/concepts by comparing sleep diary entries with dysfunctional beliefs (Table 2). Remind patients about strategies to address cognitive overactivation, and have them practice daily to apply the appropriate reframe response from Table 2 that improves sleep. Review progressive muscular relaxation to address somatized tension and arousal, but instruct patients to practice relaxation only during the day at this point.

Table 2

Correcting patients’ dysfunctional sleep beliefs/concepts

Belief/concept

Reframe responses

‘I need 8 hours sleep per night’

1. Nightly sleep need varies among individuals from 5 to 9 hours, particularly with aging
2. Employed adults sleep 6.5 to 7 hours per workweek night
3. For the ‘average’ person, it takes <6 hours of sleep to reduce performance

‘If I don’t sleep, I can’t _____ (work, socialize, take care of the kids, etc.) or
‘If I don’t sleep tonight, I won’t be able to ____’

1. Every day one-third of Americans sleep <6.5 hours and yet work, socialize, and live their lives
2. ‘You told me that on ____ you had a terrible night, yet you did ____ (that presentation, meeting, activity with family, etc.)’

‘If I don’t sleep, I feel _____’

Explore situations where the person has felt tired, irritable, angry, anxious, etc. independent from lack of sleep

‘If X happens, I won’t sleep’

Explore situations where X or something like it happened, yet sleep occurred

‘I don’t sleep at all’

1. Explore whether a bed partner reports the patient was sleeping or snoring when the person was convinced he or she was awake
2. Tell patients that if they remain in bed for >30 minutes, it is likely they slept, particularly if anxious or frustrated (older depressed patients may be an exception)
3. Teach patients that ‘don’t at all’ statements often represent an excessive focus on wakefulness, and that self-monitoring by sleep diary is helpful

Continued...
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