The Effect of Personal Protective Aids on Hypertension and Diabetes in People Exposed to High Levels of Air Pollution
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 160
- 试验地点
- 2
- 主要终点
- Absolute change in systolic blood pressure for people with hypertension using air purifier and facemask
研究概览
简要总结
This is a randomized controlled trial to evaluate personal protective aids (air purifier and N95) as a therapeutic measure in people with hypertension and diabetes exposed to high levels of PM2.5 in India.
详细描述
Air pollution is the largest environmental cause of disease and premature death in the world today, disproportionally affecting low- and middle-income countries (LMICs) such as India. Numerous studies have shown that exposure to particulate matter <2.5 µm (PM2.5) can contribute to cardiovascular disease and mortality, which is partially attributable to the development of cardiometabolic conditions such as hypertension and diabetes. We hypothesize that the use of personal protective aids (home air-purifier and N-95 mask) can decrease systolic blood pressure (SBP) in people with hypertension and decrease fasting blood glucose (FBG) in those with diabetes.
This is a prospective randomized cross-over study in Dalkhola, India- an area of high ambient PM2.5 levels. Participants between 18 and 70 years of age with hypertension (n=130) and diabetes (n=33) will be invited to participate in the study. They will be randomized to either an intervention or control arm for 4 weeks, after which they will cross over to the other arm following a 2-week washout period. The intervention period will consist of using an indoor air-purifier at night and an N-95 mask when outdoors. Control period will involve using an identical air purifier and facemask, with the filter removed (sham filtration). Participants and outcome assessors will be blinded.
The primary outcome of the study is the absolute reduction in SBP among people with hypertension and absolute reduction in FBG among people with diabetes.
This is the first randomized controlled trial to evaluate personal protective aids as a therapeutic measure in people with hypertension and diabetes exposed to high levels of PM2.5. Given the high burden of air pollution in LMICs, there is an urgent need for adaptation measures targeting people at high risk for mortality from this exposure. The results of our study will demonstrate if personal protective aids can be a viable adaptation measure for people living with hypertension and diabetes in areas with a high burden of air pollution.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Hypertension arm
- •Individuals age 18-70 years old with systolic blood pressure between 130-160 mmHg, regardless of medication use
- •Stable hypertension for the past 3 months with no medication changes
- •No planned medication changes for the duration of the study
- •Exposure to outdoor air pollution above a certain threshold (pollution levels will be measured using AirVeda devices)
- •Individuals who sleep in a closed space (such as a bedroom) for minimum of 6 hours/daily.
- •Use of gas (LPG)/electricity for cooking purposes
- •Diabetes arm
- •Individuals age 18-70 years old with fasting blood glucose between 126-180 mg/dL, regardless of medication use
- •Stable diabetes for the past 3 months with no medication changes
- •No planned medication changes for the duration of the study
- •Exposure to outdoor air pollution above a certain threshold (pollution levels will be measured using AirVeda devices)
- •Individuals who sleep in a closed space (such as a bedroom) for minimum of 6 hours/daily.
- •Use of gas (LPG)/electricity for cooking purposes
排除标准
- •Unwilling to participate
- •Unstable blood pressure and/or blood glucose level requiring frequent medication changes
- •Individual suffering from a physical or mental illness that precludes active study participation
- •Current smoker
- •Planned vacation/absence from the study site
- •Patients with life expectancy < 12 months
- •Pregnant patients
结局指标
主要结局
Absolute change in systolic blood pressure for people with hypertension using air purifier and facemask
时间窗: 4 weeks
We will monitor blood pressure at week 0,2,4 of both intervention and control period. Outcome would be measured as difference in the mean systolic blood pressure between both arms.
Absolute change in fasting blood glucose for people with diabetes using air purifier and facemask
时间窗: 4 weeks
We will monitor fasting blood glucose at week 0,2,4 of both intervention and control period. Outcome would be measured as difference in the mean systolic blood pressure between both arms.
次要结局
未报告次要终点