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Long daytime napping: A silent danger for hypertensive individuals
Jinhong Wu1,2, Lishun Liu3,4, Zena Huang3
1Department of Cardiology, First Hospital of Shanxi Medical University, Taiyuan, China.
European Journal of Neurology
|June 15, 2024
Summary
Longer daytime naps increase stroke risk in hypertensive individuals. Napping over 30 minutes, especially for ischemic stroke, elevates the danger significantly.
Area of Science:
- Cardiovascular Research
- Neurology
- Sleep Medicine
Background:
- Hypertension is a major risk factor for stroke.
- Previous studies suggest a link between daytime napping and stroke.
- Limited research exists on the specific impact of daytime nap duration on first stroke in hypertensive patients.
Purpose of the Study:
- To investigate the association between daytime napping duration and the risk of first stroke in individuals with hypertension.
- To determine if there is a threshold effect for nap duration concerning stroke risk.
- To differentiate the impact of napping on ischemic versus hemorrhagic stroke.
Main Methods:
- A cohort of 11,252 hypertensive individuals without prior stroke history was analyzed.
- Data was collected from August 2013 to December 2022.
- Statistical analyses included threshold effect analysis, Cox proportional hazard regression, and Kaplan-Meier survival curves.
Main Results:
- Daytime napping duration up to 75 minutes showed a positive correlation with stroke risk.
- Napping for 31-60 minutes (HR=1.27, 95% CI=1.06-1.53) and >60 minutes (HR=1.37, 95% CI=1.14-1.65) significantly increased first stroke risk compared to 1-30 minutes of napping.
- The increased risk was specifically observed for ischemic stroke, not hemorrhagic stroke.
- Kaplan-Meier curves indicated a higher stroke incidence with longer daytime naps.
Conclusions:
- Extended daytime napping, particularly exceeding 30 minutes, is associated with an elevated risk of stroke in hypertensive individuals.
- This risk is predominantly linked to ischemic stroke.
- The findings hold true irrespective of other contributing factors.
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