Air Pollution Leads to Increased Hospital Visits for Heart, Lung Disease

by Adeline Dorcas on  November 9, 2018 at 4:51 PM Environmental Health
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Breathing dirty air increases the global burden of respiratory and cardiovascular diseases around the world. New study highlights that air pollution can lead to increased emergency department (ED) visits for heart and lung diseases. The findings of the study are published in the journal Environment International.
Air Pollution Leads to Increased Hospital Visits for Heart, Lung Disease
Air Pollution Leads to Increased Hospital Visits for Heart, Lung Disease

Outdoor air pollution is a major health threat worldwide. New research by George Mason University found that exposure to certain air pollutants is linked to increased emergency department visits for respiratory and cardiovascular diseases.

Mason Assistant Professor of Global and Community Health Dr. Jenna Krall led the research with colleagues from Emory University, Georgia Institute of Technology, and the University of Pittsburgh. They found that exposure to pollutants such as ground-level ozone and nitrogen oxides, which are created from burning fossil fuels, led to increased ED visits.

"We found that primary pollutants--those that are emitted directly from a source, such as a car exhaust--were associated with ED visits for cardiovascular and respiratory diseases," explains Krall. "Additionally, secondary pollutants--those that are formed through chemical reactions in the air--were linked to ED visits for respiratory diseases."

While most past studies were conducted on a single-city level, this study looked at pollution across five cities--Atlanta, Birmingham, Dallas, Pittsburgh, and St. Louis. The researchers analyzed the associations between cardiorespiratory ED visits and twelve major air pollutants to examine short-term changes in health as pollution varies on a daily basis.

"By looking at the five cities, we hope to get a better sense of how these associations hold in general, instead of for individual cities," Krall noted.

This is also one of the first multicity studies to look at multiple air pollutants, including gases and particles, and multiple causes of ED visits, such as asthma and stroke. It is a larger and more comprehensive study than previous work that has commonly looked at one pollutant and multiple health outcomes, or multiple pollutants and one health outcome.

"Down the line, this research has implications for how we think about future pollution regulations because the way we regulate pollutants might differ between primary and secondary pollution," explains Krall.

Source: Eurekalert

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