Effect of Atmospheric Pollution on Obstructive Lung Diseases

Effect of Atmospheric Pollution Due to Particulate Matter on Obstructive Lung Diseases in San Nicolas, Buenos Aires Province, Argentina

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03059459

Enrollment

117

Registered

2017-02-23

Start date

2015-12-04

Completion date

2018-12-04

Last updated

2018-01-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lung Diseases, Obstructive

Keywords

Lung Diseases, Obstructive, Air Pollution, Particulate Matter

Brief summary

Several studies have demonstrated the association between atmospheric pollution and chronic respiratory diseases. The magnitude of this association and its dependence of local factors are still unknown in Argentina, particularly for obstructive lung diseases like asthma and chronic obstructive pulmonary disease (COPD). The objective of this study is to assess the effect of atmospheric pollution due to particulate matter (PM) on asthma and COPD exacerbations in adults. A prospective cohort study will be carried out in patients attending the pulmonary service of a public hospital located in San Nicolas, Buenos Aires province, Argentina. Patients will be followed for 12 months after recruitment. The outcome variables will be the frequency of hospitalizations or emergency department consults for asthma or COPD exacerbations and related conditions, and the impact of COPD on a person's life as measured by the COPD assessment test (CAT) questionnaire. The exposure will be the pollution level in the particular address, measuring PM10 concentrations with portable equipment. Other variables as air temperature, humidity, and individual patient risk factors will be considered as potential confounders or effect modifiers. The associations will be estimated through regression models, i.e. logistic and Poisson regressions and recurrent event survival analysis. The results of this study should provide elements to estimate the risk of chronic respiratory diseases associated with atmospheric pollution, and to evaluate strategies for risk assessment in the local community.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Patients with asthma or COPD attending the pulmonary service.

Exclusion criteria

* Patients who refuse to participate in this study or to sign the informed consent document.

Design outcomes

Primary

Measure	Time frame	Description
Asthma or COPD hospitalizations or emergency department visits	12 months	Asthma or COPD hospitalizations or emergency department visits measured by hospital records

Secondary

Measure	Time frame	Description
Quality of life associated with obstructive lung diseases	12 months	The quality of life associated with obstructive lung diseases will be measured with a short patient-completed questionnaire, the COPD Assessment Test (CAT).

Outcome results