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Siesta, night sleep and blood pressure dropping
13rd Medical Ward, Ospedale S. Spirito, Lungotevere in Sassia 1, Rome, Italy.
Blood Pressure Monitoring
|May 11, 1999
Summary
Blood pressure significantly drops during both night and afternoon sleep compared to awake periods. This blood pressure dipping was observed similarly across conventional and patient-reported sleep times.
Area of Science:
- Cardiology
- Sleep Medicine
- Physiology
Background:
- Nocturnal blood pressure dipping is well-documented.
- Limited research exists on blood pressure changes during daytime sleep.
Purpose of the Study:
- To describe blood pressure drops during night and afternoon sleep.
- To investigate the relationship between blood pressure dipping and individual characteristics.
Main Methods:
- 107 patients underwent 24-hour ambulatory blood pressure monitoring.
- Blood pressure readings were taken every 0.5 hours.
- Patient demographics, creatinine, and sleep diaries were recorded.
Main Results:
- A significant decline in both diastolic (12 mmHg) and systolic (15 mmHg) blood pressure occurred during night sleep.
- Blood pressure decline was greater in untreated hypertensive individuals.
- Similar blood pressure levels were observed during night and afternoon sleep, and across conventional and patient-reported sleep times.
Conclusions:
- Substantial blood pressure reduction occurs during both night and afternoon sleep compared to awake states.
- No clinically significant differences in blood pressure were found between conventional day periods and patient-reported awake/sleeping hours.
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