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Sleep Quality in Chronic Pain Patients With and Without Strong Opioid Use: An Observational Study Using a Wearable

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Area of Science:

  • Pain Management
  • Sleep Medicine
  • Pharmacology

Background:

  • Opioid analgesics are commonly prescribed for chronic pain, but their impact on sleep remains incompletely understood.
  • This study investigates the relationship between varying levels of opioid use and sleep characteristics in patients with chronic non-cancer pain.

Purpose of the Study:

  • To compare subjective and objective sleep parameters across different opioid use categories in chronic pain patients.
  • To determine if dose-dependent effects of strong opioids on sleep exist.

Main Methods:

  • 29 chronic non-cancer pain patients were categorized into non-opioid, weak opioid, and strong opioid users (<60 mg/day and ≥60 mg/day morphine-equivalent doses).
  • Sleep was assessed using subjective measures (Athens Insomnia Scale) and objective measures (wearable device for total sleep duration, wakefulness after sleep onset [WASO], and sleep efficiency) over seven nights.
  • Pain intensity, psychological factors (catastrophizing, anxiety, depression, stress), and demographic data were collected and used for statistical adjustment.

Main Results:

  • Patients using strong opioids at ≥60 mg/day showed significantly shorter total sleep duration, longer WASO, and lower sleep efficiency compared to non-opioid users, even after adjusting for confounding factors.
  • Those using strong opioids at <60 mg/day exhibited trends toward shorter WASO and higher sleep efficiency.
  • Subjective insomnia symptoms were more prevalent in strong opioid users, particularly in the high-dose group.

Conclusions:

  • High-dose strong opioid consumption in chronic pain patients is associated with poorer objective sleep quality.
  • Low-dose strong opioid use may not negatively impact sleep and could potentially be linked to improved sleep characteristics.
  • These findings suggest a dose-dependent relationship between strong opioids and sleep disturbances in chronic pain management.