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Acupoint Application Combined with Ear Plaster Therapy for Treating Sleep Disorders with Acute Exacerbation of Chronic Obstructive Pulmonary Disease

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Sleep-disordered breathing and chronic opioid therapy.

Lynn R Webster¹, Youngmi Choi, Himanshu Desai

¹Lifetree Clinical Research and Pain Clinic, Salt Lake City, Utah, USA. lynnw@lifetreepain.com

Pain Medicine (Malden, Mass.)

|May 21, 2008

Summary

Chronic pain patients on opioid therapy frequently experience sleep apnea. Higher doses of methadone and benzodiazepines are linked to increased sleep apnea severity, necessitating careful monitoring.

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Area of Science:

Pain Management
Sleep Medicine
Pharmacology

Background:

Sleep-disordered breathing is prevalent in patients with chronic pain.
Opioid therapy is a common treatment for chronic pain, but its effects on sleep are not fully understood.

Purpose of the Study:

To investigate the relationship between medications used for chronic pain and the occurrence and severity of sleep apnea.
To determine if there is a dose-dependent relationship between specific pain medications and sleep apnea indices.

Main Methods:

An observational study was conducted at a private chronic pain clinic.
140 patients on stable, around-the-clock opioid therapy for at least six months underwent polysomnography.
Generalized linear models were used to analyze the association between methadone, non-methadone opioids, benzodiazepines, and sleep apnea indices (apnea-hypopnea index, central apnea index).

Main Results:

Sleep apnea was diagnosed in 75% of the study participants.
A direct relationship was observed between the apnea-hypopnea index and the daily dosage of methadone (P = 0.002).
The central apnea index showed a direct relationship with both methadone (P = 0.008) and benzodiazepine (P = 0.004) dosages.

Conclusions:

Sleep-disordered breathing is common among chronic pain patients receiving opioid therapy.
The dose-response relationship between methadone, benzodiazepines, and sleep apnea indicates a need for increased clinical vigilance and monitoring.