Breathing in tiny particles of air pollution may trigger irregular heart rhythms in otherwise healthy teenagers and increase their risk of sudden cardiac death, according to a new study published in the Journal of the American Heart Association.
Breathing in tiny particles of air pollution may trigger irregular heart rhythms in otherwise healthy teenagers and increase their risk of sudden cardiac death, a new study has found. on Wednesday, investigated the impact of inhaling fine particulate matter — also known as PM 2.5 — on heart rhythms of adolescents.
While the negative impacts of air pollution on adult cardiovascular health have already been determined, this latest study is the first to explore the effects on teenagers in the general population, according to the authors. Premature ventricular contractions — when the heartbeat originates from one of the heart’s lower chambers, the ventricles — also raise the risk of later heat attack, stroke, heart failure or sudden cardiac death, according to the authors.When premature contractions cause no symptoms, they are not treated, but when they lead to a frequently skipped heartbeat, doctors may suggest implantable devices or other others, the scientists said.
As part of the follow-up, the scientists measured exposure to fine particulate matter in the air each teen breathed for 24 hours, while tracking their heart rhythms via a small wearable device. The scientists observed a 5-percent increase in the number of premature ventricular contractions within two hours of exposure for each increase of 10 micrograms of PM 2.5 per cubic meter of air.
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