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Effects of passive smoking on heart rate variability, heart rate and blood pressure: an observational study.
- Source :
-
International journal of epidemiology [Int J Epidemiol] 2007 Aug; Vol. 36 (4), pp. 834-40. Date of Electronic Publication: 2007 Apr 17. - Publication Year :
- 2007
-
Abstract
- Background: Exposure to environmental tobacco smoke (ETS) has been shown to increase the risk for cardiovascular diseases and death, and autonomic dysfunction (specifically, reduced heart rate variability (HRV)) is a predictor of increased cardiac risk. This study tests the hypothesis that ETS exposure reduces HRV in the general population and discusses possible pathways.<br />Methods: This cross-sectional study was conducted between 2001 and 2003 and is part of the SAPALDIA (Swiss Cohort Study on Air Pollution and Lung Diseases in Adults) study. The analysis included 1218 randomly selected non-smokers aged 50 and above who participated in 24-h electrocardiogram recordings. Other examinations included an interview, investigating health status (especially respiratory and cardiovascular health and health relevant behaviours and exposure to ETS) and measurements of blood pressure, body height and weight.<br />Results: Subjects exposed to ETS at home or at work for more than 2 h/day had a difference of -15% in total power (95%CI: -26 to -3%), low frequency power (-28 to -1%), low/high frequency ratio (-26 to -3%) and -18% (-29 to -4%) in ultralow frequency power of HRV compared with subjects not exposed to ETS at home or work. We also found a 2.7% (-0.01 to 5.34%) higher heart rate during the recording in exposed subjects.<br />Conclusions: Exposure to ETS at home and work is associated with lower HRV and with higher heart rate in an ageing population. Our findings suggest that exposure to ETS increases cardiac risk through disturbances in the autonomic nervous system.
- Subjects :
- Cardiovascular Diseases etiology
Chi-Square Distribution
Cross-Sectional Studies
Educational Status
Electrocardiography, Ambulatory
Female
Humans
Male
Middle Aged
Multivariate Analysis
Risk Assessment methods
Switzerland
Work
Autonomic Nervous System
Blood Pressure
Heart Rate
Tobacco Smoke Pollution adverse effects
Subjects
Details
- Language :
- English
- ISSN :
- 0300-5771
- Volume :
- 36
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- International journal of epidemiology
- Publication Type :
- Academic Journal
- Accession number :
- 17440032
- Full Text :
- https://doi.org/10.1093/ije/dym031