Abstract
Aim – to identify the differences in sleep architecture of patients in the early recovery period after ischemic and hemorrhagic stroke.
Methods. The study involved 143 patients in their early post-stroke recovery period, the patients’ average age was 59.6 ± 7.4 years. Among subjects there were 69 males (48.2%) and 74 females (51.8%). A total of 62% (89 patients) had ischemic lesions, 38% (54 patients) had hemorrhagic lesions. Patients with insomnia were identified based on the results of preliminary questionnaire survey involving the use of the screening assessment scale of subjective sleep characteristics. Objective assessment of the night sleep architecture features was performed by polysomnography.
Results. Comparative assessment of sleep architecture showed that the majority of surveyed patients had a combination of phenomenological sleep disorder types, however, predominance of presomnic disorders was reported in patients after ischemic stroke, while patients after hemorrhagic stroke showed predominance of intrasomnic disorders. The sleep stage duration alterations (larger share of superficial sleep and smaller share of deep sleep) were typical for both types of cerebrovascular disease, they were slightly more prominent in patients after ischemic stroke, which could be due to the brain tissue necrosis, cystic-gliotic changes in the affected area.
Conclusions. The differences in sleep architecture identified are consistent with the papers by domestic and foreign researchers on the impaired structure and lower effectiveness of sleep in post-stroke patients. To date, the cause of significant alterations of sleep architecture in patients after ischemic stroke is poorly understood and requires further research in this area.
Key words: insomnia, stroke, polysomnography, sleep architecture alterations.
Methods. The study involved 143 patients in their early post-stroke recovery period, the patients’ average age was 59.6 ± 7.4 years. Among subjects there were 69 males (48.2%) and 74 females (51.8%). A total of 62% (89 patients) had ischemic lesions, 38% (54 patients) had hemorrhagic lesions. Patients with insomnia were identified based on the results of preliminary questionnaire survey involving the use of the screening assessment scale of subjective sleep characteristics. Objective assessment of the night sleep architecture features was performed by polysomnography.
Results. Comparative assessment of sleep architecture showed that the majority of surveyed patients had a combination of phenomenological sleep disorder types, however, predominance of presomnic disorders was reported in patients after ischemic stroke, while patients after hemorrhagic stroke showed predominance of intrasomnic disorders. The sleep stage duration alterations (larger share of superficial sleep and smaller share of deep sleep) were typical for both types of cerebrovascular disease, they were slightly more prominent in patients after ischemic stroke, which could be due to the brain tissue necrosis, cystic-gliotic changes in the affected area.
Conclusions. The differences in sleep architecture identified are consistent with the papers by domestic and foreign researchers on the impaired structure and lower effectiveness of sleep in post-stroke patients. To date, the cause of significant alterations of sleep architecture in patients after ischemic stroke is poorly understood and requires further research in this area.
Key words: insomnia, stroke, polysomnography, sleep architecture alterations.
For citation:Kurushina O.V., Kurakova E.A. Sleep architecture of patients in the early recovery period after ischemic or hemorrhagic stroke. Clinical review for general practice. 2023; 4 (10): 14–18 (In Russ.). DOI: 10.47407/kr2023.4.10.00337
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