nitrogen-dioxide and Bronchiectasis

The relation of acute fluctuations of air pollution to hospital admission for bronchiectasis remained uncertain, and large-scale studies were needed. We collected daily concentrations of particulate matter (PM), sulfur dioxide (SO

Topics: Air Pollutants; Air Pollution; Bronchiectasis; China; Environmental Exposure; Female; Hospitalization; Hospitals; Humans; Nitrogen Dioxide; Ozone; Particulate Matter; Sulfur Dioxide

Although air pollution is a serious problem in Ahvaz, the association between air pollution and respiratory diseases has not been studied enough in this area. The aim of this study was to determine the relation between short-term exposure to air pollutants and the risk of hospital admissions due to asthma, COPD, and bronchiectasis in Ahvaz.. Hospital admissions data and air pollutants including O. The results showed a significant increase in hospital admissions for asthma (RR=1.004, 95% CI: 1.002-1.007) and COPD (RR=1.003, 95% CI: 1.001-1.005) associated with PM. Short-term exposure to air pollutants significantly increases the risk of hospital admissions for asthma, COPD, and bronchiectasis in the adult and elderly population.

Topics: Age Factors; Air Pollutants; Air Pollution; Asthma; Bronchiectasis; Carbon Monoxide; Hospitalization; Humans; Inhalation Exposure; Iran; Nitric Oxide; Nitrogen Dioxide; Particulate Matter; Pulmonary Disease, Chronic Obstructive; Risk Assessment; Risk Factors; Sulfur Dioxide; Time Factors

In bronchiectasis, exacerbations are believed to be triggered by infectious agents, but often no pathogen can be identified. We hypothesised that acute air pollution exposure may be associated with bronchiectasis exacerbations.We combined a case-crossover design with distributed lag models in an observational record linkage study. Patients were recruited from a specialist bronchiectasis clinic at Ninewells Hospital, Dundee, UK.We recruited 432 patients with clinically confirmed bronchiectasis, as diagnosed by high-resolution computed tomography. After excluding days with missing air pollution data, the final model for particles with a 50% cut-off aerodynamic diameter of 10 µm (PM

Topics: Aged; Air Pollutants; Air Pollution; Bronchiectasis; Cross-Over Studies; Disease Progression; Environmental Exposure; Environmental Monitoring; Female; Humans; Logistic Models; Male; Middle Aged; Nitrogen Dioxide; Particulate Matter; Seasons; United Kingdom

Background. The relationship between air pollution and exacerbation of respiratory diseases is well established. Nevertheless, its association with hemoptysis has been poorly investigated. This paper describes the relationship of air pollutants with severe hemoptysis. Methods. All consecutive subjects with severe hemoptysis during a 5-year period were included. The relationship between the contamination measurements and the frequency of embolizations was analyzed using Poisson regressions. In these regressions, the dependent variable was the monthly number of embolizations in a given month and the independent variable was either the concentration of an air contaminant during the same month, the concentration of the air contaminant during the previous month, or the difference between the two. Results. A higher total number of embolizations per month were observed over the months with increases in the concentration of NO. The number of embolizations was 2.0 in the 33 months with no increases in the concentration of NO, 2.1 in the 12 months with small increases, 2.2 in the 5 months with moderate increases, 2.5 in the 4 months with large increases, and 4.0 in the 5 months with very large increases. Conclusion. There is association between hemoptysis and increases in the concentration of atmospheric NO in Badalona (Spain).

Topics: Adult; Aged; Air Pollution; Bronchial Arteries; Bronchiectasis; Carbon Monoxide; Embolization, Therapeutic; Environmental Exposure; Female; Hemoptysis; Humans; Male; Middle Aged; Neoplasms; Nitric Oxide; Nitrogen Dioxide; Ozone; Particulate Matter; Pulmonary Disease, Chronic Obstructive; Regression Analysis; Retrospective Studies; Seasons; Severity of Illness Index; Spain; Sulfur Dioxide; Tuberculosis