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Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
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Heart rate variability and cardiorespiratory coupling in obstructive sleep apnea: elderly compared with young
R Trimer1, R Cabidu2, L L M Sampaio3
1Cardiopulmonary Physiotherapy Laboratory, Physiotherapy Department, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, São Carlos, Brazil.
Sleep Medicine
|September 14, 2014
Summary
Aging and obstructive sleep apnea (OSA) negatively impact heart rate variability (HRV) and cardiorespiratory coupling (CRC). These conditions reduce autonomic modulation in both young and elderly individuals during sleep and wakefulness.
Area of Science:
- Gerontology
- Sleep Medicine
- Cardiology
Background:
- Aging significantly increases the risk of obstructive sleep apnea (OSA).
- Sleep breathing changes with age, leading to more apnea events, impacting heart rate variability (HRV) and cardiorespiratory coupling (CRC).
Purpose of the Study:
- Compare HRV and CRC in young and elderly patients, with and without OSA, during wakefulness and sleep.
- Determine the differential impact of OSA on HRV and CRC in young versus elderly individuals during sleep.
Main Methods:
- Polysomnography was performed on 100 subjects (50 young, 50 elderly), stratified by OSA status.
- Analysis included spectral, cross-spectrum, and HRV parameters during wakefulness and sleep stages.
Main Results:
- Age impacted HRV, increasing low frequency during wakefulness.
- OSA reduced HRV during sleep (Stage 2 and REM), with age-specific interactions.
- Elderly subjects showed reduced cardiorespiratory coupling (%TPCR) during wakefulness; OSA further reduced %TPCR during Stage 2 sleep.
Conclusions:
- Both aging and OSA adversely affect HRV, reducing autonomic modulation across sleep stages and wakefulness.
- Age influences cardiorespiratory coupling during wakefulness, while OSA impacts it during sleep.
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