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Relation of Pollution, winter and rise in heart attack treatment

Heavily polluted areas have a higher rate of angioplasty procedures to treat blocked arteries than areas with clean air, according to research presented at ESC Congress 2019.
Dr Rafal Januszek of the University Hospital in Krakow, Poland said that patients from areas with cleaner air are more sensitive to changes in pollution, while those from more polluted cities can adapt to fluctuations.
The five polluted cities were selected from Poland for the study. PM10 are particles ten micrometres or less in diameter. Sources include industrial processes like iron making and quarrying, lawn mowing, wood and coal stoves, bushfires, dust storms, and vehicle exhaust emissions.
All patients underwent stent insertion (percutaneous coronary intervention; PCI) to open arteries blocked due to acute coronary syndromes (heart attack or unstable angina).Dates of PCI procedures were matched with air quality on the same day during a 52-week period. Analyses were also performed to compare winter versus non-winter weeks because pollution levels rise during winter.
Regarding the seasonal effect, the PCI rate was significantly lower in non-winter, compared to winter, weeks in both polluted and clean cities. “The higher incidence of PCI in winter is related to greater air pollution during this period,” said Dr Januszek. “This is due to several factors such as artificial heating and the resulting smog.”
The study shows that the incidence of acute coronary syndromes treated with PCI was higher in winter and rose along with increasing pollution, and this rise was higher in regions with initially cleaner air, if taking the same increment in pollution into account. This is further evidence that more needs to be done to lower pollution levels and protect the public’s health.

Source @ science daily  23 Aug 2019

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