Air Pollution Raises Risk of Bronchiectasis-related Hospitalizations in Iran, Study Finds

Air Pollution Raises Risk of Bronchiectasis-related Hospitalizations in Iran, Study Finds
Higher levels of air pollutants increase the risk of hospitalizations for lung-associated conditions, including bronchiectasis, asthma, and chronic obstructive pulmonary disease (COPD), an Iranian study has found. The study, "Acute Effects of Air Pollution on Hospital Admissions for Asthma, COPD, and Bronchiectasis in Ahvaz, Iran," was published in the International Journal of Chronic Obstructive Pulmonary Disease. Air pollution is known to cause damage to lungs and increase the risk of lung diseases. Ahvaz, a city in southwestern Iran, has a history of pollution-associated problems, which are further complicated by sand storms in the area. The current rate of asthma in Ahvaz is twice the national average. Researchers at Ahvaz Jundishapur University of Medical Sciences investigated the connection between short-term air pollutant exposure and hospitalizations for asthma, bronchiectasis, and COPD. To do this, they looked at levels of various pollutants in the air, measured over the course of a decade (2008–2018), and looked for associations between changes in these levels and the frequency of hospitalizations at two large hospitals in Ahvaz. The specific pollutants measured included carbon monoxide (CO), ozone, nitrogen oxides (NOx), sulfur dioxide (SO2), and particulate matter in the air, which was named based on size: PM2.5 for particles under 2.5 µm in diameter, and PM10 for those under 10 µm in diameter. In total, the study period included hospitalizations that were bronchiectasis-related (1,994), asthma-related (3,090), COPD-related (4,534). Changes in particulate matter levels were found to be significantly associated with differences in all three diseases. In the total population, each 10 μg/m3 increase in PM2.5 boosted the risk of asthm
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