Home Air Cleaners and Blood Pressure in Qatar Adults
Tests home air cleaners with and without HEPA filters in adults with high blood pressure.
Plain-language title generated from the registry record
Registry title: Air Pollution and Cardiovascular Disease in Qatar: an Interventional Study to Reduce Blood Pressure
Key facts
- Where
- Doha, QatarSee the site
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults in Qatar with mild high systolic blood pressure and either type 2 diabetes or metabolic syndrome. It tests home air cleaners.
- Age
- 18 to under 65 years
- Sex
- All sexes can join
- Disease stage
- Mild systolic high blood pressure: 130 to 159 mm Hg at the screening visit. Plus type 2 diabetes (HbA1c > 6.5% (48 mmol/mol)), or no type 2 diabetes but at least 2 more signs of metabolic syndrome (waist size, triglycerides, HDL-C, fasting glucose).
- Earlier treatment
- If taking blood pressure or cholesterol medicines, the dose must be stable for at least 1 week, with no changes planned during the study. No more than 2 blood pressure medicines.
- Biomarker or test result
- HbA1c > 6.5% (48 mmol/mol) for type 2 diabetes. Otherwise at least 2 more metabolic syndrome criteria: waist 102 cm (3 ft 4 in) or more (men) or 88 cm (35 in) or more (women), triglycerides 150 mg/dL (1.7 mmol/L) or more, low HDL-C, fasting glucose 100 mg/dL (5.6 mmol/L) or more.
Main reasons for not taking part
- Pregnancy
- Stage 4 or worse kidney disease
- Type 1 or MODY diabetes
- Lung disease needing oxygen, or cancer under treatment
- Already using a HEPA filter at home
Read by machine on 9 November 2026.
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 65 years old?
Source: NCT05903950, who can take part
Where in Qatar
- Hamad Medical CorporationDoha, QatarContact: Jassim Al-Suwaidi, MDTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Weill Cornell Medical College in Qatar
- Trial code
- NCT05903950
- Record updated
- 23 October 2026
- Original description
The main objective is to determine if in-home portable air cleaners provide persistent reductions in PM2.5 exposures and improvements in systolic blood pressure and biochemical parameters over one week in patients with metabolic syndrome or type 2 diabetes residing in Qatar.Read full original descriptionShow less
Air Pollution and Cardiovascular Disease in Qatar: an Interventional Study to Reduce Blood Pressure: the APCIQ-BP Trial
The main objective is to determine if in-home portable air cleaners provide persistent reductions in PM2.5 exposures and improvements in systolic blood pressure and biochemical parameters over one week in patients with metabolic syndrome or type 2 diabetes residing in Qatar.
Inclusion: Age ≥18 and less than 65 years old; Living in a single residence (home, apartment) located anywhere in Qatar; Mild systolic hypertension: screening visit systolic BP 130 to 159 mm Hg (off treatment or taking ≤ 2 BP medications that have been stable without changes during prior one week); Either:; Type 2 diabetes patients (HbA1c > 6.5%) OR Non-type 2 diabetes patients with two or more additional criteria for the metabolic syndrome,; Waist circumference ≥102 cm if male and ≥88 cm if female; Fasting triglycerides ≥150 mg/dL (or taking a triglyceride-lowering medication); HDL-C ≤ 40 mg/dL if male and ≤ 50 mg/dL if female (or taking an HDL-raising medication),; Fasting glucose ≥100 mg/dL (or taking an antidiabetic medication).
Exclusion: Cancer receiving treatment; Medication changes in the past week. If participants are on medications for high BP or hyperlipidemia, they will need to have had stable therapy for at least one week with no planned changes during the study; Acute illness or infectious symptoms within the prior 4 weeks; ≥stage 4 kidney disease (estimated glomerular filtration rate <30 ml/min); A medical condition placing the participant at risk from participation (per investigators); Lung disease requiring oxygen; Type 1 diabetes or MODY diabetes; Pregnancy (self-reported); Expected overnight travel outside their residence during the study; HEPA filter within the ACs of the residence (self-reported) or individual use of HEPA filter filter; Unable to comprehend/sign an informed consent; Screening visit: BP ≥160/100 mm Hg; Left upper arm circumference >17 inches as this will make BP levels inaccurate with the home monitor used.