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

28. november 2022 oppdatert av: Nantes University Hospital
The project is to measure exposure to outdoor and indoor air pollutants in asthma patients in order to show a possible association between variation in pollutant exposure and the occurrence of exacerbations in these patients

Studieoversikt

Status

Rekruttering

Forhold

Detaljert beskrivelse

Asthma is a chronic airway disease affecting between 6% and 7% of the French adult population. Asthma is responsible for nearly 1000 deaths each year in France. Air pollution (indoor and outdoor) is responsible for 7 million deaths each year according to the World Health Organization (WHO) assessment published in 2018, including 65,000 in France. Studies monitoring exposure to indoor air pollutants are few in number in asthmatic patients. Very little research has been devoted to continuous monitoring of indoor air quality in homes. Our hypothesis is that variation in exposure to indoor air pollutants, in relation to outdoor air, would have an impact on the occurrence of exacerbations in asthmatic patients.

Studietype

Observasjonsmessig

Registrering (Forventet)

30

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studer Kontakt Backup

Studiesteder

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 99 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The study population will consist of adult men and women recruited from the active file of asthma patients followed at the Nantes University Hospital, the Saint Nazaire Hospital, the Châteaubriant Nozay Pouancé Hospital and the Erdre et Loire Hospital. Regardless of the type of asthma, patients will be potentially included if they have a minimum of 4 exacerbations during the year preceding inclusion in the EXAP project>. Participation in other non-interventional research is allowed during the study unless this research increases the number of exacerbations.

Beskrivelse

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,

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Asthma exacerbations
Tidsramme: 36 months

The primary criterion is the association between the occurrence of exacerbations and the concentrations of the following pollutants or other environmental factors measured daily in the patients' homes by air pollution sensor inside and outside the home.

  • the concentration of indoor pollutants: PM1 (µg/m3), PM2.5 (µg/m3), PM10 (µg/m3), volatile organic compounds (VOC) (µg/m3) , CO2 (ppm),
  • the concentration of outdoor pollutants (µg/m3): PM1, PM2.5, PM10,
  • The ratios (indoor/outdoor air) of PM1, PM2.5 and PM10 in the home,
  • Temperature(°C) and relative humidity (RH) (%) in indoor and outdoor air,
  • Exceedances of regulatory (provided by the Environmental Code) or recommended (determined by the sensor supplier) pollutant thresholds.
36 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Daily Peak flow (l/ min)
Tidsramme: 36 months

The secondary criterion is the the temporal association between the daily Peak flow and the concentrations of the same pollutants or other environmental factors listed in the primary criterion.

Subgroup analyses : groups of patients will be created according to the characteristics of their habitat (heating mode, ventilation, rural or urban area...).

Both primary and secondary outcomes will be studied in these subgroups.

36 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Etterforskere

  • Hovedetterforsker: François-Xavier Blanc, PU-PH, CHU de Nantes

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

15. november 2022

Primær fullføring (Forventet)

15. september 2025

Studiet fullført (Forventet)

15. september 2025

Datoer for studieregistrering

Først innsendt

7. juli 2022

Først innsendt som oppfylte QC-kriteriene

30. august 2022

Først lagt ut (Faktiske)

1. september 2022

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. desember 2022

Siste oppdatering sendt inn som oppfylte QC-kriteriene

28. november 2022

Sist bekreftet

1. november 2022

Mer informasjon

Begreper knyttet til denne studien

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

3
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