Bassetti, C. L. A.; Randerath, W; Vignatelli, L; Ferini-Strambi, L; Brill, A.-K.; Bonsignore, M R; Grote, L; Jennum, P; Leys, D; Minnerup, J; Nobili, L; Tonia, T.; Morgan, R; Kerry, J; Riha, R; McNicholas, W T; Papavasileiou, V (2020). EAN/ERS/ESO/ESRS statement on the impact of sleep disorders on risk and outcome of stroke [guidelines]. European journal of neurology, 27(7), pp. 1117-1136. Blackwell Science 10.1111/ene.14201
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BACKGROUND
Sleep disorders are highly prevalent in the general population and may be linked in a bidirectional fashion to stroke, which is one of the leading causes of morbidity and mortality.
AIM
Four major scientific societies established a task force of experts in neurology, stroke, respiratory medicine, sleep medicine and methodology to critically evaluate the evidence regarding potential links and the impact of therapy.
MATERIALS AND METHODS
Thirteen research questions were evaluated in a systematic literature search using a stepwise hierarchical approach: first, systematic reviews and meta-analyses; second, primary studies post-dating the systematic reviews/meta-analyses. A total of 445 studies were evaluated and 88 were included. Statements were generated regarding current evidence and clinical practice.
RESULTS
Severe obstructive sleep apnoea (OSA) doubles the risk for incident stroke, especially in young to middle-aged patients. Continuous positive airway pressure (CPAP) may reduce stroke risk, especially in treatment-compliant patients. The prevalence of OSA is high in stroke patients and can be assessed by polygraphy. Severe OSA is a risk factor for recurrence of stroke and may be associated with stroke mortality, whilst CPAP may improve stroke outcome. It is not clear if insomnia increases stroke risk, whilst the pharmacotherapy of insomnia may increase it. Periodic limb movements in sleep (PLMS), but not restless limb syndrome (RLS), may be associated with an increased risk of stroke. Preliminary data suggest a high frequency of post-stroke insomnia and RLS and their association with a less favourable stroke outcome, whilst treatment data are scarce.
DISCUSSION/CONCLUSION
Overall, the evidence base is best for OSA relationship with stroke and supports active diagnosis and therapy. Research gaps remain especially regarding insomnia and RLS/PLMS relationships with stroke.
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