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Sleep Apnoea and Stroke
Context
Recent research from the National Institute of Mental Health and Neurosciences (NIMHANS) has brought new insights into the relationship between sleep apnoea and stroke. As stroke is a leading cause of mortality and disability globally, this study highlights the importance of evaluating sleep disorders in stroke patients, especially as October 29 marks World Stroke Day.
Key Findings from the Study
- Prevalence of Sleep Apnoea: The study examined 105 stroke patients aged over 50. It found that 88% had sleep apnoea, with 38% experiencing severe cases at the initial assessment.
- Improvement Over Time: Follow-up evaluations showed that 26% of patients had sleep apnoea three months after the stroke, and only 12% had severe sleep apnoea. This indicates that a portion of sleep apnoea cases may improve on their own post-stroke.
- Laterality Effects: The study identified a novel aspect of sleep efficiency related to the side of the brain affected by the stroke. Patients with damage to the right side experienced difficulties in initiating sleep and felt drowsy in the morning, suggesting a specific impact on sleep quality based on the stroke's location.
- Need for Further Research: The researchers emphasized the need for long-term studies to determine if the observed improvements in sleep apnoea persist. Currently, many stroke patients are not evaluated for this disorder, despite its potential implications for recovery and future stroke risk.
- Snoring as a Risk Factor: The study also highlighted snoring as a vital risk factor for stroke, although not all individuals who snore have sleep apnoea. Sleep apnoea, characterized by breathing pauses during sleep, can lead to reduced oxygen levels in the blood, increasing the risk of stroke.
About World Stroke Day
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