(Press-News.org) Prague, Czechia – 22 May 2023: Heart failure patients are at increased risk of dying from their condition on polluted days and up to two days afterwards, according to research presented today at Heart Failure 2023, a scientific congress of the European Society of Cardiology (ESC).1
“The findings indicate that reducing air pollution has the potential to prevent worsening heart failure,” said study author Dr. Lukasz Kuzma of the Medical University of Bialystok, Poland. “Protecting vulnerable groups, especially during winter, should become an integral part of clinical care. That means health professionals working with patients to monitor air quality and choose optimal times for outdoor activity.”
Air pollution is the single biggest environmental threat to human health, according to the World Health Organization (WHO).2 This includes particulate matter (PM)2.5 and PM10, of which major sources are vehicle exhaust emissions and industry fumes. Ambient air pollution caused an estimated 4.2 million premature deaths globally in 2019.3
Heart failure affects more than 64 million people worldwide.4 The authors of the current study previously found that rises in particulate matter were associated with increased hospitalisations for heart failure.5 This study examined the relationship between smog exposure and short-term mortality from heart failure.
Mortality data from the five main cities in Eastern Poland during 2016 to 2020 were obtained from the Central Statistical Office. Concentrations of PM2.5 and PM10 were retrieved from the Inspectorate for Environmental Protection. Home post codes were used to connect individual pollution exposure with mortality.
The researchers used a time-stratified case-crossover study design in which participants served as their own controls. This eliminated the potential confounding effect of individual characteristics. For each participant, pollutant levels on the day of the week a death occurred (e.g. Tuesday) were compared with pollutant levels on the same day of the week with no deaths (e.g. all remaining Tuesdays) in the same month. The analyses were repeated for pollution levels one day and two days before a death took place. All analyses were adjusted for factors that could influence the relationships including the time of year, day of the week, weather conditions (temperature, humidity and atmospheric pressure) and long-term trends such as population demographics.
A total of 87,990 deaths were recorded during the five-year study, of which 7,404 were due to heart failure. The average age of those who died from heart failure was 74 years and 49% were women. The highest number of deaths occurred in winter and the lowest in summer, with averages of 1.03 and 0.69 per day, respectively. A 10 μg/m3 increase in PM2.5 and PM10 was associated with a 10% and 9% rise, respectively, in the risk of death due to heart failure on the polluted day. Similar risks of dying from heart failure were observed one and two days following smog exposure.
Dr. Kuzma said: “The results suggest that pollution continues to exert negative effects on heart health for two days after smog exposure. Patients with heart failure should minimise their time in polluted areas, for example by avoiding outdoor activities in places with dense traffic or when pollution levels are high, and using air filters at home. In addition, patients can advocate for policies and actions to improve air quality in their communities.”
He concluded: “Our research indicates that considering the impact of pollution in public health measures to prevent disease and the consequences of ill health could lead to positive outcomes for patients with heart failure. Such measures should be taken in parallel with clinical care to improve the prognosis of this condition.”
ENDS
Authors: ESC Press Office
Tel: +33 (0)489 872 075
Email: press@escardio.org
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Notes to editor
Funding: The project is funded by the National Science Centre in Poland grant UMO-2021/41/B/NZ7/03716 and by research grants from the Medical University of Bialystok UMB- B.SUB.23.290 and UMB-B.SUB.23.509.
Disclosures: None.
References and notes
1The abstract ‘Analysis of an acute effect of particulate matters on heart failure mortality in Poland’ will be presented during the session ‘Chronic Heart Failure - Prevention’ which takes place on 22 May at 16:00 CEST at Moderated ePosters 2.
2WHO global air quality guidelines: particulate matter (PM2.5 and PM10), ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide. https://www.who.int/publications/i/item/9789240034228
3World Health Organization: Ambient (outdoor) air pollution. https://www.who.int/news-room/fact-sheets/detail/ambient-(outdoor)-air-quality-and-health
4Savarese G, Becher PM, Lund LH, et al. Global burden of heart failure: a comprehensive and updated review of epidemiology. Cardiovasc Res. 2023;118:3272–3287.
5Roszkowska S, Kula B, Pawelec N, et al. Environmental and socioeconomic determinants of heart failure. Kardiol Pol. 2023;81:160–167.
About Heart Failure 2023 & World Congress on Acute Heart Failure
Heart Failure is the annual congress of the Heart Failure Association (HFA) of the European Society of Cardiology (ESC).
#HeartFailure2023
About the Heart Failure Association
The Heart Failure Association (HFA) is a branch of the European Society of Cardiology (ESC). Its aim is to improve quality of life and longevity, through better prevention, diagnosis and treatment of heart failure, including the establishment of networks for its management, education and research.
About the European Society of Cardiology
The European Society of Cardiology brings together health care professionals from more than 150 countries, working to advance cardiovascular medicine and help people lead longer, healthier lives.
Information for journalists about registration for Heart Failure 2023
Heart Failure 2023 takes place 20 to 23 May at the O2 universum in Prague, Czechia and online. Explore the scientific programme.
Free registration applies to accredited press.
Credentials: A valid press card or appropriate letter of assignment with proof of three recent published articles. Read the ESC media and embargo policy.
The ESC Press Office will verify the documents and confirm by email that your press accreditation is valid.
The ESC Press Office decision is final regarding all press registration requests. END
Dirty air linked with premature death in patients with heart failure
2023-05-22
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