alexa A Retrospective Examination of Sleep Disturbance across
ISSN: 2167-0277

Journal of Sleep Disorders & Therapy
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Research Article

A Retrospective Examination of Sleep Disturbance across the Course of Bipolar Disorder.

Jennifer C Kanady1, Adriane M Soehnera2 and Allison G Harvey1*
1Department of Psychology, University of California, Berkeley, Berkeley, CA, USA
2Department of Psychiatry, University of Pittsburgh, School of Medicine, Pittsburgh, PA, USA
Corresponding Author : Allison G. Harvey, Ph.D
3210 Tolman Hall #1650, Berkeley
CA, 94720-1650, USA
Tel: 510-642-7138
E-mail: [email protected]
Received February 02, 2015; Accepted March 24, 2015; Published March 30, 2015
Citation: Kanady JC, Soehnera AM, Harvey AG (2015) A Retrospective Examination of Sleep Disturbance across the Course of Bipolar Disorder. J Sleep Disord Ther 4:193. doi:10.4172/2167-0277.1000193
Copyright: © 2015 Kanady JC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

Background: Sleep disturbance is a prevalent and clinically significant feature of bipolar disorder. However, there are aspects of sleep and bipolar disorder that have been minimally characterized. This study aims to fill several gaps in the literature by examining the prevalence, coexistence, and persistence of sleep disturbance retrospectively across a five-year period in bipolar disorder.

Methods: Fifty-one people with bipolar disorder I and comorbid insomnia who were currently inter-episode completed the NIMH Retrospective Life-Charting Methodology (the life chart). The life chart was used to document the prevalence, coexistence, and persistence of insomnia, hypersomnia, delayed sleep phase, reduced sleep need, and irregular sleep patterns across the course of five years.

Results: Across the five year period, manic months were primarily characterized by reduced sleep need (62.8%) and insomnia (38.1%), depressive months by hypersomnia (56.0%) and insomnia (51.9%), mixed months by all five types of sleep disturbance, and inter-episode months by insomnia (67.4%). There was coexistence in the types of sleep disturbance experienced. Further, each type of sleep disturbance demonstrated persistence across the five years, with persistence rates being the highest for insomnia (49.0–58.8%).

Conclusions: Sleep disturbance is a prevalent and complex feature across mood episodes and inter-episode periods of bipolar disorder. Further, there is variation in the types of sleep disturbance experienced.

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