Impact of air pollution on asthma exacerbations

Study of the Impact of Exposure to Outdoor and Indoor Pollutants in Patients With Asthma

Nantes University Hospital · NCT05525169

This study looks at how air pollution affects asthma patients by tracking their exposure to pollutants at home and outside to see if it leads to more asthma attacks.

Quick facts

Study typeObservational
Enrollment30 (estimated)
Ages18 Years to 99 Years
SexAll
SponsorNantes University Hospital (other)
Locations1 site (Nantes)
Trial IDNCT05525169 on ClinicalTrials.gov

What this trial studies

This observational study aims to measure the exposure of asthma patients to both outdoor and indoor air pollutants to investigate the potential link between pollutant exposure and the frequency of asthma exacerbations. The study will involve continuous monitoring of air quality in patients' homes and outdoor environments. By analyzing the data collected, researchers hope to identify patterns that could inform better management strategies for asthma exacerbations related to air quality.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 with a confirmed asthma diagnosis and a history of at least four exacerbations in the past year.

Not a fit: Patients who are active smokers or have other significant pulmonary conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and management of asthma exacerbations related to air pollution.

How similar studies have performed: While there is limited research on continuous monitoring of indoor air quality in asthmatic patients, studies on outdoor air pollution and asthma exacerbations have shown promising results.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient over 18 years of age,
* Patient with a confirmed diagnosis of asthma for at least 12 months as defined by the investigator,
* Patient with at least 4 asthma exacerbations in the last year
* Patient sleeping at least 6 nights per week in the same home

Exclusion Criteria:

* Patient who is an active smoker or living with an active smoker,
* Patient with a diagnosis of COPD, ABPA or associated pulmonary fibrosis,
* Patient with an asthma exacerbation within 15 days prior to the inclusion visit,
* Patient with known occupational exposure,
* Patient living in a dwelling that does not allow the installation of sensors (inability to connect the sensor to the power supply, no location for the outdoor sensor...)
* Patient who plans to move in the next 6 months,
* Patient with a life expectancy of less than 6 months,
* Patient who has someone living in their household also included in EXAP,
* Patient who lives in an apartment and does not have a balcony or space for the outdoor sensor,
* Pregnant or breastfeeding women,

Where this trial is running

Nantes

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Asthma, exacerbations, outdoor and indoor air pollutants

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.