Impact of seasonality and air pollutants on carotid-femoral pulse wave velocity and wave reflection in hypertensive patients

The effects of seasonality on blood pressure (BP) and cardiovascular (CV) events are well established, while the influence of seasonality and other environmental factors on arterial stiffness and wave reflection has never been analyzed. This study evaluated whether seasonality (daily number of hours...

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Bibliographic Details
Published in:PloS one 2017-02, Vol.12 (2), p.e0172550-e0172550
Main Authors: Di Pilla, Marina, Bruno, Rosa Maria, Stea, Francesco, Massetti, Luciano, Taddei, Stefano, Ghiadoni, Lorenzo, Modesti, Pietro Amedeo
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Air Pollutants - adverse effects
Air pollution
Air temperature
Augmentation
Biology and Life Sciences
Blood pressure
Blood Pressure - drug effects
Body mass
Body mass index
Body size
Care and treatment
Climatic data
Cross-Sectional Studies
Daylight
Ecology and Environmental Sciences
Engineering and Technology
Environmental aspects
Environmental factors
Female
Femur
Humans
Hypertension
Hypertension - physiopathology
Male
Mean temperatures
Medicine and Health Sciences
Meteorological conditions
Middle Aged
Nitrous oxide
Nitrous oxides
Particulate matter
Patients
Physical Sciences
Pollutants
Pulse Wave Analysis
Regression analysis
Risk factors
Seasonal variations
Seasons
Stiffness
Studies
Temperature
Temperature effects
Veins & arteries
Velocity
Wave reflection
Wave velocity
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Summary:The effects of seasonality on blood pressure (BP) and cardiovascular (CV) events are well established, while the influence of seasonality and other environmental factors on arterial stiffness and wave reflection has never been analyzed. This study evaluated whether seasonality (daily number of hours of light) and acute variations in outdoor temperature and air pollutants may affect carotid-femoral pulse wave velocity (PWV) and pressure augmentation. 731 hypertensive patients (30-88 years, 417 treated) were enrolled in a cross-sectional study during a 5-year period. PWV, central BP, Augmentation Index (AIx) and Augmentation Pressure (AP) were measured in a temperature-controlled (22-24°C) room. Data of the local office of the National Climatic Data Observatory were used to estimate meteorological conditions and air pollutants (PM10, O3, CO, N2O) exposure on the same day. PWV (mean value 8.5±1.8 m/s) was related to age (r = 0.467, p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0172550