Sleep dysfunction in multiple system atrophy

Luigi Ferini-Strambi, Sara Marelli

Research output: Contribution to journalArticle

Abstract

Sleep disorders in multiple system atrophy (MSA) are common manifestation and include reduced and fragmented sleep, excessive daytime sleepiness, REM sleep behaviour disorder (RBD), and sleep-disordered breathing. Of these, RBD is the most common (affecting 90 %-100 % of patients with MSA) and is regarded as a red flag for MSA. RBD, as well as stridor during sleep, may be the initial manifestation of the disease, occurring several years before the waking motor and dysautonomic onset. Sleep disorders occur in both MSA with predominant parkinsonism (MSA-P) and MSA with predominant cerebellar ataxia (MSA-C). Treatment strategies in patients with MSA presenting difficulties in initiating and maintaining sleep need to be highly individualized. Clonazepam has been found to be successful in treating RBD symptoms at the dose of 0.25 to 2.0 mg given approximately 30 min before bedtime. In case of comorbid obstructive sleep apnea, zopiclone (at the dose from 3.75 to 7.5 mg each night) or melatonin (with a recommended dose of 3 to 12 mg at bedtime) may be alternative treatments. An increased survival in MSA patients with stridor may be obtained both with continuous positive airway pressure (CPAP) and tracheostomy. Since tracheostomy is an invasive surgical procedure, not easily accepted by the patient, CPAP therapy should be considered first. However, tracheostomy is first indicated when stridor is present during wakefulness because of the high risk of respiratory failure and death. In MSA, obstructive sleep apnea (OSA) occurs more frequently than central sleep apnea, ranging from 15 % to 37 % of the cases. CPAP is an effective treatment for eliminating obstructive sleep apnea in MSA patients, even if the adaptation to the device may be difficult in advanced cases.

Original languageEnglish
Pages (from-to)464-473
Number of pages10
JournalCurrent Treatment Options in Neurology
Volume14
Issue number5
DOIs
Publication statusPublished - Oct 2012

Keywords

  • Behavior disorders
  • Central apnea
  • Excessive daytime sleepiness
  • Multiple system atrophy
  • Obstructive sleep apnea
  • REM sleep
  • Sleep
  • Sleep dysfunction
  • Stridor
  • Treatment

ASJC Scopus subject areas

  • Clinical Neurology

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