• Sameer Hassamal, Karen Miotto, Tisha Wang, and Andrew J Saxon.
• Department of Addiction Psychiatry, UCLA-Kern, Bakersfield, California.
• Am J Addict. 2016 Sep 1; 25 (6): 452-65.

Background And ObjectivesOpioids increase the risk for sleep disordered breathing (SDB), but there are few studies examining the prevalence and risk factors for SDB, specifically central sleep apnea (CSA), and obstructive sleep apnea (OSA) in chronic pain patients on opioids as well as methadone maintained patients (MMPs).MethodsA literature review was conducted in which SDB was confirmed by polysomnography (PSG) in chronic pain patients on opioids as well as patients with a diagnosis of an opioid use disorder or opioid dependence on methadone maintenance treatment (MMT).ResultsAbout 22 reports were included. Six were with MMPs, and 16 were with chronic pain patients on opioids. Among MMPs, the prevalence of SDB ranged from 42.3% to 70%; 0-60% had CSA and 10-35.2% had OSA. In chronic pain patients on opioids, the prevalence of SDB ranged from 71% to 100%; 17-80% had CSA and 20-39% had OSA. In MMPs, studies found a positive association between BMI, weight gain, duration of MMT, non-Caucasian race and the number of obstructive apneas, as well as blood methadone concentrations and the number of central apneas. In chronic pain patients on opioids, older age, higher BMI, male gender, and higher opioid doses predicted more obstructive apneas; older age, lower BMI, male gender, higher pain levels, higher benzodiazepine doses, and higher opioid doses predicted more central apneas.Conclusion And Scientific SignificanceCSA and OSA are common in MMPs and chronic pain patients on opioids. Among chronic pain patients, higher opioid doses appear to be a risk factor for CSA, and to a lesser extent OSA. Therefore, it is important for providers to screen these patient populations for SDB. (Am J Addict 2016;25:452-465).© 2016 American Academy of Addiction Psychiatry.

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