Subclinical Cardiovascular Health Benefits of Interventions to Reduce Exposure to Combustion-Derived Particulate Air Pollution
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 83
- 试验地点
- 1
- 主要终点
- Difference in reactive hyperemia measurement after HEPA filtration
研究概览
简要总结
This study is focused on the effects of HEPA filtration to reduce exposures to combustion-derived air pollution (CDAP). Specifically, the study will evaluate the health benefits of HEPA filters and compare the cardiovascular toxicity of two major sources of CDAP, specifically traffic and residential wood combustion.
Specifically, the purpose of this study is to evaluate the ability of portable high efficiency particle air (HEPA) filters to reduce exposures to PM2.5 and air pollution indoors and to improve subclinical indicators of microvascular function and systemic inflammation among healthy adult participants.
The investigators hypothesize that HEPA filter use will help decrease indoor concentrations of CDAP thereby helping to mitigate the associated cardiovascular risks.
详细描述
To address knowledge gaps about health risks of specific pollution sources and to provide new evidence on the health benefits of air pollution interventions, the objectives of this study are: 1) quantify the relationship between low-level exposures to combustion-derived PM air pollution and subclinical indicators of cardiovascular disease risk; and 2) compare the relative impact of HEPA filtration for two major PM sources (traffic and residential wood combustion) on these indicators.
The use of HEPA filters may help to mitigate cardiovascular risks factors caused by combustion-derived air pollution (CDAP), (specifically woodstove and traffic emissions). We hypothesize that HEPA filter use and improved woodstove technology will help decrease indoor occurrences of CDAP. This project will help address knowledge gaps in CDAP-related health risks and benefits of interventions. Specific objectives include establishing a relationship between exposure to CDAP and biomarkers of cardiovascular risk and evaluating the impact of HEPA filter use towards improved indoor air quality and health indicators.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Prevention
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 19 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •19 years or older
- •non-smoking household
- •lives within study boundaries and in areas of interest
排除标准
- •heart disease
- •hypertension
- •arthritis
- •gum disease
- •occupationally exposed to traffic exposures &/or woodsmoke
- •if female, pregnant
研究组 & 干预措施
Indoor Air HEPA Filtration
HEPA filters will be placed in participant's main living area and bedroom. Actual filtration will occur during only one of the two 7-day sampling periods.
干预措施: HEPA Filter (Device)
HEPA Filtration Placebo
For one of two 7-day sampling sessions, HEPA filters placed in participants' homes will be run without an actual filter in the housing unit.
干预措施: HEPA Filtration Placebo (Device)
结局指标
主要结局
Difference in reactive hyperemia measurement after HEPA filtration
时间窗: after 1 week of filtration
Participants endothelial function are tested after 1 week of HEPA filtration and after 1 week of non-HEPA filtration (placebo filtration).
次要结局
- Difference in C-Reactive Protein after HEPA Filtration(after 1 week of filtration)
研究者
Ryan Allen
Assistant Professor
Simon Fraser University