Statins are medicines used to lower the amounts of cholesterol and fats in the blood. This, in turn, lowers the chances of a heart attack. Apart from that, aspirin is helpful too.
When the heart stops, it stops pumping blood throughout the body. All brain activity is believed to cease by about three to four minutes from the time the heart stops due to lack of oxygen
Yes, a person can get a heart attack without cardiac arrest. Heart attacks occur due to a blockage in the coronary arteries. However, heart attacks can sometimes lead to sudden cardiac arrest.