Air pollution exposure may lead to heart attack within an hour: Study

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Beijing, April 23 | Exposure to air pollutants — even at levels below World Health Organization (WHO) air quality guidelines — may trigger a heart attack within an hour, claims a new study.

The study found exposure to any level of four common air pollutants — fine particulate matter, nitrogen dioxide, sulphur dioxide and carbon monoxide — could quickly trigger the onset of acute coronary syndrome (ACS).

ACS is an umbrella term describing any situation in which blood supplied to the heart muscle is blocked, such as in a heart attack or unstable angina, chest pain caused by blood clots that temporarily block an artery.

Exposure to nitrogen dioxide was most strongly associated, followed by fine particulate matter, and was most dangerous during the first hour following exposure. The link was strongest among adults age 65 and older with no history of smoking or other respiratory illnesses and for people exposed during the colder months.

“The adverse cardiovascular effects of air pollution have been well documented. But we were still surprised at the very prompt effects,” said Haidong Kan, Professor in the School of Public Health at Fudan University in Shanghai.

“Another surprise was the non-threshold effects of air pollution. Any concentration of air pollutants may have the potential to trigger the onset of a heart attack,” Kan added.

The study was published in the American Heart Association’s journal Circulation.

Exposure to fine particulate matter — microscopic solids or liquid droplets that come from automobile emissions, power plants, construction sites and other sources of pollution — has been unequivocally linked to heart disease, stroke and other health issues, as well as 4.2 million premature deaths worldwide. These particles can be so small that when inhaled, they may go deep into the lungs or even the bloodstream.

In the new study, researchers analysed medical data for nearly 1.3 million people treated for heart attacks and unstable angina at 2,239 hospitals in 318 Chinese cities between 2015 and 2020.

They compared hourly onset times of heart events with concentrations of fine particulate matter, coarse particulate matter, nitrogen dioxide, sulphur dioxide, carbon monoxide and ozone.

While short-term exposure to any level of the pollutants was associated with the onset of all types of ACS, as levels of the studied pollutants rose, so did the risk for heart attacks.

“The cardiovascular effects of air pollution should be a serious concern for all, including policymakers, clinicians and individuals,” Kan said.

Source: IANS

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Share Market Closing Bell: Nifty ends above 15,500, Sensex gains 443 pts

Share Market Closing Bell: Nifty ends above 15,500, Sensex gains 443 pts

On a weekly expiry day, Nifty opened on positive note and have a dip to make an intraday low at 15367.50 level but showed bounce back moment as managed to close at 15556.65 level with a gain of 143 points. Bank Nifty closed the session at 33135 level with a gain of 289.70 points. 45 Out of Nifty 50 ended in green which suggest broad based buying.

All the sectoral indices managed to close in green expect Energy while Nifty Auto was top gainer. Among Nifty Stock, MARUTI, EICHERMOT, HEROMOTOCO & M&M were the top gainers, While RELIANCE, COALINDIA, POWERGRID & GRASIM were the prima laggards. India VIX closed at 20.88 level with a loss of 1.97%. On Technical Front, The Nifty has formed bullish candle but faced resistance at 21 Four-Hourly Moving Average i.e., 15647 which suggest crossing above the same can show more upside rally.

Nifty has been trading in range of 15200-15700 level while breaching either side can suggest further direction of breakouts. Nifty has given above 50-Hourly Moving Averages which indicate it can show upside moment in the counter. On the Nifty OI Data, On the call side ,the highest OI witnessed at 16000 level while on the put side was at 15500 Niftg level followed by 15300 levels. The momentum indicators Stochastic is trading with a positive crossover on a daily chart which suggest northward journey in the Nifty.

The Nifty may find support around 15200 levels while on the upside 15700 may act as an immediate hurdle. On the other hand, Bank Nifty has support at 32300 levels while resistance at 33800 levels.

Overall, Sector specific momentum has been observed, crossing above 15700 Nifty can show more upside rally.

Market entering into buy on dips pattern.

Palak Kothari
Senior Technical Analyst
Choice Broking

Source: Choice India

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The information contained in this post is source form the news agency or PR agency. We do not take any responsibility of accuracy of information. We have not made any modification or changes in original source content. This information only for general information purposes only. The information is provided by BhaskarLive.in and while we Endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the post for any purpose.

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