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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
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Excessive daytime sleepiness in multiple system atrophy (SLEEMSA study).

Claudia Moreno-López1, Joan Santamaría, Manuel Salamero

  • 1Movement Disorders Unit, Department of Neurology, Hospital Clinic of Barcelona, University of Barcelona Medical School and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, 08036 Barcelona, Spain.

Archives of Neurology
|February 16, 2011
PubMed
Summary
This summary is machine-generated.

Excessive daytime sleepiness (EDS) affects over a quarter of patients with multiple system atrophy (MSA), similar to Parkinson disease (PD). However, the causes of EDS differ between MSA and PD.

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Neurodegenerative Diseases

Background:

  • Sleep disorders are prevalent in Multiple System Atrophy (MSA).
  • The specific prevalence of Excessive Daytime Sleepiness (EDS) in MSA patients remains largely unknown.
  • Understanding EDS in MSA is crucial for patient management and quality of life.

Purpose of the Study:

  • To determine the frequency of Excessive Daytime Sleepiness (EDS) in patients with Multiple System Atrophy (MSA).
  • To investigate the factors associated with EDS in MSA.
  • To compare EDS prevalence and associations in MSA with Parkinson disease (PD) and healthy controls.

Main Methods:

  • A survey assessing EDS using the Epworth Sleepiness Scale (ESS) and other sleep scales was conducted.
  • Eighty-six MSA patients were compared with 86 age- and sex-matched Parkinson disease (PD) patients and 86 healthy individuals.
  • Data collected included disease severity, dopaminergic treatment, and restless legs syndrome.

Main Results:

  • Excessive Daytime Sleepiness (EDS), defined as an ESS score >10, was present in 28% of MSA patients and 29% of PD patients, significantly higher than in healthy subjects (2%).
  • In MSA, EDS was not correlated with dopaminergic treatment but was weakly correlated with disease severity.
  • Sleep-disordered breathing and sleep efficiency predicted EDS in MSA, while dopaminergic treatment and restless legs syndrome predicted EDS in PD.

Conclusions:

  • Approximately 28% of patients with Multiple System Atrophy (MSA) experience Excessive Daytime Sleepiness (EDS).
  • The prevalence of EDS in MSA is comparable to that observed in Parkinson disease (PD).
  • The underlying causes of EDS appear to differ between MSA and PD, suggesting distinct pathophysiological mechanisms.