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Air Pollution by Hydrothermal Volcanism and Human Pulmonary Function.

Linhares D, Ventura Garcia P, Viveiros F, Ferreira T, dos Santos Rodrigues A - Biomed Res Int (2015)

Bottom Line: The OR for restrictive defects and for exacerbation of obstructive defects (COPD) in the hydrothermal area was 4.4 (95% CI 1.78-10.69) and 3.2 (95% CI 1.82-5.58), respectively.Increased prevalence of restrictions and all COPD severity ranks (mild, moderate, and severe) was observed in the population from the hydrothermal area.These findings may assist health officials in advising and keeping up with these populations to prevent and minimize the risk of respiratory diseases.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, University of the Azores, Ponta Delgada, 9501-801 Azores, Portugal ; CVARG, Center for Volcanology and Geological Risks Assessment (CVARG), University of the Azores, Ponta Delgada, 9501-801 Azores, Portugal.

ABSTRACT
The aim of this study was to assess whether chronic exposure to volcanogenic air pollution by hydrothermal soil diffuse degassing is associated with respiratory defects in humans. This study was carried in the archipelago of the Azores, an area with active volcanism located in the Atlantic Ocean where Eurasian, African, and American lithospheric plates meet. A cross-sectional study was performed on a study group of 146 individuals inhabiting an area where volcanic activity is marked by active fumarolic fields and soil degassing (hydrothermal area) and a reference group of 359 individuals inhabiting an area without these secondary manifestations of volcanism (nonhydrothermal area). Odds ratio (OR) and 95% confidence intervals (CIs) were adjusted for age, gender, fatigue, asthma, and smoking. The OR for restrictive defects and for exacerbation of obstructive defects (COPD) in the hydrothermal area was 4.4 (95% CI 1.78-10.69) and 3.2 (95% CI 1.82-5.58), respectively. Increased prevalence of restrictions and all COPD severity ranks (mild, moderate, and severe) was observed in the population from the hydrothermal area. These findings may assist health officials in advising and keeping up with these populations to prevent and minimize the risk of respiratory diseases.

No MeSH data available.


Related in: MedlinePlus

Proportion (%) of individuals with obstructive and restrictive airway diseases in study (Ribeira Quente) and reference (Ponta Delgada) groups;  *significantly different at P < 0.05.
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fig2: Proportion (%) of individuals with obstructive and restrictive airway diseases in study (Ribeira Quente) and reference (Ponta Delgada) groups;  *significantly different at P < 0.05.

Mentions: The prevalence of restrictions in the study group was significantly higher than in the reference group (10.2% versus 3.0%, resp.; P = 0.001). Similarly, the prevalence of COPD was significantly higher in the study group than in the reference one (33.6% versus 11.9%, resp.; P < 0.001) (Figure 2). The prevalence of more severe obstructions was also higher in the study group compared to the reference one (mild, 15.7 versus 4.4, moderate, 6.8 versus 2.2, and severe, 4.7 versus 0, resp.).


Air Pollution by Hydrothermal Volcanism and Human Pulmonary Function.

Linhares D, Ventura Garcia P, Viveiros F, Ferreira T, dos Santos Rodrigues A - Biomed Res Int (2015)

Proportion (%) of individuals with obstructive and restrictive airway diseases in study (Ribeira Quente) and reference (Ponta Delgada) groups;  *significantly different at P < 0.05.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4537725&req=5

fig2: Proportion (%) of individuals with obstructive and restrictive airway diseases in study (Ribeira Quente) and reference (Ponta Delgada) groups;  *significantly different at P < 0.05.
Mentions: The prevalence of restrictions in the study group was significantly higher than in the reference group (10.2% versus 3.0%, resp.; P = 0.001). Similarly, the prevalence of COPD was significantly higher in the study group than in the reference one (33.6% versus 11.9%, resp.; P < 0.001) (Figure 2). The prevalence of more severe obstructions was also higher in the study group compared to the reference one (mild, 15.7 versus 4.4, moderate, 6.8 versus 2.2, and severe, 4.7 versus 0, resp.).

Bottom Line: The OR for restrictive defects and for exacerbation of obstructive defects (COPD) in the hydrothermal area was 4.4 (95% CI 1.78-10.69) and 3.2 (95% CI 1.82-5.58), respectively.Increased prevalence of restrictions and all COPD severity ranks (mild, moderate, and severe) was observed in the population from the hydrothermal area.These findings may assist health officials in advising and keeping up with these populations to prevent and minimize the risk of respiratory diseases.

View Article: PubMed Central - PubMed

Affiliation: Department of Biology, University of the Azores, Ponta Delgada, 9501-801 Azores, Portugal ; CVARG, Center for Volcanology and Geological Risks Assessment (CVARG), University of the Azores, Ponta Delgada, 9501-801 Azores, Portugal.

ABSTRACT
The aim of this study was to assess whether chronic exposure to volcanogenic air pollution by hydrothermal soil diffuse degassing is associated with respiratory defects in humans. This study was carried in the archipelago of the Azores, an area with active volcanism located in the Atlantic Ocean where Eurasian, African, and American lithospheric plates meet. A cross-sectional study was performed on a study group of 146 individuals inhabiting an area where volcanic activity is marked by active fumarolic fields and soil degassing (hydrothermal area) and a reference group of 359 individuals inhabiting an area without these secondary manifestations of volcanism (nonhydrothermal area). Odds ratio (OR) and 95% confidence intervals (CIs) were adjusted for age, gender, fatigue, asthma, and smoking. The OR for restrictive defects and for exacerbation of obstructive defects (COPD) in the hydrothermal area was 4.4 (95% CI 1.78-10.69) and 3.2 (95% CI 1.82-5.58), respectively. Increased prevalence of restrictions and all COPD severity ranks (mild, moderate, and severe) was observed in the population from the hydrothermal area. These findings may assist health officials in advising and keeping up with these populations to prevent and minimize the risk of respiratory diseases.

No MeSH data available.


Related in: MedlinePlus