Sleep Stroke Research Articles

Effectiveness of the 30-Degree Lateral Sleeping Position on Sleep Quality in Elderly Individuals Post-Stroke

Background: Post-stroke conditions can have an impact on the sleep quality of the elderly. Sleep disorders are a common health problem for the elderly, requiring serious attention. Poor sleep quality in the elderly is caused by increased sleep potential, reduced sleep efficiency, and early awakenings due to the ageing process.
 Objective: This research aims to determine the effectiveness of a 30-degree lateral sleeping position compared to a supine sleeping position on the sleep quality of elderly individuals post-stroke.
 Method: The design of this research uses a quasi-experiment design with a non-equivalent control group design approach. The study will be conducted in 2023 in Ekasari Village, Jembrana Regency, Bali. The total research population is 126 elderly individuals, and the sample size meeting the criteria is 64 respondents, divided into 32 respondents in the intervention group and 32 respondents in the control group. Data analysis in this study uses the Mann-Whitney U Test.
 Results: The Mann-Whitney U Test shows a difference between the intervention and control groups (p = 0.000, Z score = -4.830), which means that the 30-degree lateral sleep position is better at helping older people who have had a stroke sleep better than the supine sleep position.
 Conclusion: Post-stroke elderly individuals tend to experience an improvement in sleep quality when they sleep in the lateral position of 30 degrees. Therefore, elderly people who are having sleep quality issues can adopt this sleeping position to improve their sleep.

Correction: Polysomnographic Characteristics of Sleep in Stroke: A Systematic Review and Meta-Analysis

[This corrects the article DOI: 10.1371/journal.pone.0148496.].

Polysomnographic Characteristics of Sleep in Stroke: A Systematic Review and Meta-Analysis.

BackgroundResearch on sleep after stroke has focused mainly on sleep disordered breathing. However, the extend to which sleep physiology is altered in stroke survivors, how these alterations compare to healthy volunteers, and how sleep changes might affect recovery as well as physical and mental health has yet to be fully researched. Motivated by the view that a deeper understanding of sleep in stroke is needed to account for its role in health and well-being as well as its relevance for recovery and rehabilitation, we conducted a systematic review and meta-analysis of polysomnographic studies comparing stroke to control populations.MethodMedline and PsycInfo databases were searched using "stroke" and words capturing polysomnographic parameters as search terms. This yielded 1692 abstracts for screening, with 15 meeting the criteria for systematic review and 9 for meta-analysis. Prisma best practice guidelines were followed for the systematic review; the Comprehensive Meta-Analysis software was used for random effects modelling.ResultsThe meta-analysis revealed that patients with stroke have poorer sleep than controls. Patients had lower sleep efficiency (mean 75% vs 84%), shorter total-sleep-time (309.4 vs 340.3 min) and more wake-after-sleep-onset (97.2 vs 53.8 min). Patients also spend more time in stage 1 (13% vs 10%) and less time in stage 2 sleep (36% vs 45%) and slow-wave-sleep (10% vs 12%). No group differences were identified for REM sleep. The systematic review revealed a strong bias towards studies in the early recovery phase of stroke, with no study reporting specifically on patients in the chronic state. Moreover, participants in the control groups included community samples as well as other patients groups.ConclusionsThese results indicate poorer sleep in patients with stroke than controls. While strongly suggestive in nature, the evidence base is limited and methodologically diverse, and hands a clear mandate for further research. A particular need regards polysomnographic studies in chronic community-dwelling patients compared to age-matched individuals.

Does sleep protect against ischemic stroke? less frequent ischemic strokes but more severe ones

Stroke occurrence follows a circadian curve, with a higher frequency in the morning. This curve changes if the hours of sleep also change. Our aim was to evaluate the characteristics, risk factors, and prognosis associated with sleep stroke. Patients with ischemic stroke (n = 813), consecutively assessed in our hospital for 2 years, were recorded with the time of clinical onset, pathological antecedents, severity (NIHSS), clinical classification, etiologic TOAST classification, and functional outcome at 3 months (modified Rankin scale). When clinical disturbance appeared during night sleep time it was considered as sleep stroke (SS). The rest were considered wakefulness stroke (WS). Differences SS-WS were analyzed with chi(2), t-student, Mann-Whitney U, and logistic regression tests. From 813 patients included, 127 were SS (15.6%). The SS frequency was less than expected for the corresponding interval of hours. After the univariate analysis and posterior logistic regression, obesity was a factor associated with SS. Adjustment for age and gender revealed that atrial fibrillation (AF) was less frequent in the SS group. There were no differences for other risk factors or in the etiologic distribution. SS had a greater initial clinical severity and a worse functional outcome at 3 months. This functional outcome was dependent on the initial clinical severity. Whilst sleep could be associated with a lesser stroke occurrence, it could also be associated with a higher severity. Obesity appears as a factor related to SS whilst AF appears related to WS.