The negative effect of excessive cold or heat was seen in people suffering from heart failure in cardiovascular disease. The risk of death is 12 percent higher on days of extreme heat than on days of normal temperature.
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extremely hot or cold temperatures heart patients can prove fatal for American Heart Association This has been revealed in a recent research published in the journal Circulation. Researchers studied data on heart disease deaths around the world for 40 years and found that most deaths occurred when temperatures were colder than normal or extremely hot.
“This emphasizes the urgent need to develop those measures,” said study co-author Haitham Khraishah, a cardiovascular disease researcher at the University of Maryland School of Medicine (UMSOM) and the University of Maryland Medical Center (UMMC). Which will help in reducing the impact of climate change on heart patients in our society.
Dr. Mukesh Goyal, Senior Cardiac Surgeon at Apollo Hospital, Delhi told, ‘The risk of heart attack increases in cold weather. Due to excessive pollution, the danger increases further.
The risk of heart failure can increase by up to 12 percent in winter.
The negative effect of excessive cold or heat was seen in people suffering from heart failure in cardiovascular disease. The risk of death is 12 percent higher on days of extreme heat than on days of normal temperature. Apart from this, due to extreme cold, the risk of death due to heart failure increased by 37 percent.
Dr. Goyal told News9 that the winter season can create problems for people suffering from heart disease. Many studies show that heart attack, heart failure and irregular heartbeat i.e. heart arrhythmia problems increase during winter. He said, ‘As soon as the temperature drops, our body and heart have to work extra hard to maintain a healthy body temperature. This can put pressure on our heart and increases the risk of heart failure in those people whose heart is not working properly.
The results of this research are based on the analysis of health data of more than 3.20 crore (32 million) deaths from cardiovascular diseases in 567 cities in 27 countries on 5 continents between 1979 and 2019. The definition of extreme weather varies from city to city. It was kept 1 percent above and below the ‘minimum mortality temperature’. This is the temperature at which the mortality rate is lowest.
The researchers found that for every 1,000 cardiovascular deaths, there were 2.2 additional deaths on the hottest day (above 86° F in Baltimore). There were 9.1 additional deaths on extremely cold days (below 20° F in Baltimore).
climate change and heart disease
Heart patients had the highest number of deaths due to cardiac arrest. 2.6 extra deaths on extremely hot days and 12.8 extra deaths on extremely cold days.
Dr. Khrishah said, ‘However, we do not know why the effect of temperature is more on patients with heart failure. This can be due to heart failure in the form of disease. One in four patients with heart failure are readmitted within 30 days of being discharged from hospital, and only 20 per cent of these patients survive 10 years after treatment.
Dr. Avi Kumar, Senior Consultant, Department of Pulmonology, Fortis Escorts Heart Institute, Okhla, New Delhi, cautioned that climate change has now become a ‘real time threat’ to people due to air pollution. There is ample evidence that greenhouse gases are being produced due to climate change. It causes wildfires and droughts apart from prolonged heatwaves. Changes in weather increase the risk of cardiorespiratory disease in one way or the other.
He said, ‘Short-term and long-term effects on cardiovascular health have been observed after exposure to pollution, especially PM 2.5. Short-term exposure is associated with high BP, heart failure, and myocardial infarcts, while long-term effects include coronary arteriosclerosis and ventricular hypertrophy.
Climate change is the cause of extreme weather i.e. extreme cold or extreme heat. A 2021 study published in the journal Science found that due to the warming of the Arctic, ice started melting in the polar region and this changed the weather.
Mark T. Gladwin of the University of Maryland School of Medicine (UMSOM), Professor John Z., Akiko K. According to Bowers, ‘This study, one of the largest multinational datasets to date, reveals an association between exposure to extreme heat and death in people with heart disease.
This data can be studied in more depth to learn more about health disparities and the role of genetic factors that make a segment of the population more vulnerable to climate change.’
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