• Sleep medicine · Nov 2017

    Does comorbid obstructive sleep apnea impair the effectiveness of cognitive and behavioral therapy for insomnia?

    • Alexander Sweetman, Leon Lack, Sky Lambert, Michael Gradisar, and Jodie Harris.
    • Adelaide Institute for Sleep Health: Flinders Centre for Research Excellence, Flinders University of South Australia, Bedford Park, SA, 5042, Australia; School of Psychology, Flinders University of South Australia, Bedford Park, SA, 5042, Australia. Electronic address: alexander.sweetman@flinders.edu.au.
    • Sleep Med. 2017 Nov 1; 39: 38-46.

    AimsComorbid insomnia and obstructive sleep apnea (OSA) represents a highly prevalent and debilitating condition; however, physicians and researchers are still uncertain about the most effective treatment approach. Several research groups have suggested that these patients should initially receive treatment for their insomnia before the sleep apnea is targeted. The current study aims to determine whether Cognitive and Behavioral Therapy for Insomnia (CBT-i) can effectively treat insomnia in patients with comorbid OSA and whether its effectiveness is impaired by the presence of OSA.MethodsA retrospective chart review was conducted to examine 455 insomnia patients entering a CBT-i treatment program in a hospital out-patient setting. Three hundred and fourteen patients were diagnosed with insomnia alone and 141 with insomnia and comorbid OSA. Improvements in average sleep diary parameters, global insomnia severity, and several daytime functioning questionnaires from baseline, to post-treatment, to 3-month follow-up were compared between insomnia patients with and without comorbid OSA.ResultsInsomnia patients with comorbid OSA experienced significant improvements in insomnia symptoms, global insomnia severity, and other daytime functioning measures during and following treatment. Furthermore, improvements were no different between patients with or without comorbid OSA. Sleep apnea presence and severity were not related to rates of insomnia-remission or treatment-resistance following treatment.ConclusionsCBT-i is an effective treatment in the presence of comorbid OSA. This information offers support for the suggestion that patients with comorbid insomnia and OSA should be treated with CBT-i prior to the treatment of the OSA.Copyright © 2017 Elsevier B.V. All rights reserved.

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