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  • Title: Periodic limb movement during sleep and chronic obstructive pulmonary disease.
    Author: Charokopos N, Leotsinidis M, Pouli A, Tsiamita M, Karkoulias K, Spiropoulos K.
    Journal: Sleep Breath; 2008 May; 12(2):155-9. PubMed ID: 18071770.
    Abstract:
    The aim of this work was to study whether chronic obstructive pulmonary disease (COPD) subjects exhibited periodic limb movement (PLMs) during sleep. A retrospective case control study was conducted in the referral sleep disorders laboratory in the University of Patras in southwest Greece. A sample of 23 COPD subjects was compared with 14 severe obstructive sleep apnea (OSA) subjects and 18 periodic limb movement disorder (PLMD) subjects. The PLM Index (PLMI) and PLMs Arousal Index (PLMAI) in COPD subjects differ (p<0.05) from severe OSA patients. The PLMAI differ (p < 0.05) between COPD and PLMD subjects. Spearman's correlation showed a positive statistical significant correlation between PLMI and PLMAI in the entire population and in COPD subjects. There was no statistical significant correlation between sleep-related symptoms and the occurrence of PLMs disorder in COPD patients. In our study, PLMs with associated arousals are often seen in COPD subjects. Further prospective studies will be necessary to clarify the mechanisms whereby the reduction in PLMs in COPD patients improved their sleep and quality of life.
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