16 Heart Attack Signs That Can Save Your Life, According to Experts

A heart attack, also known as a myocardial infarction (MI), occurs when blood flow to the heart is blocked, preventing oxygen from reaching the heart muscle. A heart attack occurs when an atherosclerotic plaque ruptures and blocks a coronary artery already narrowed by fatty, cholesterol-containing buildup over time. Without adequate blood flow, heart muscle tissue begins to die within minutes. Because a heart attack is a medical emergency, fast treatment is critical to prevent serious damage or death.

Read on to learn the common warning signs of a heart attack and when to call 911.

While some heart attack symptoms can resemble other conditions, early recognition is critical. Knowing the warning signs-and acting quickly-can significantly improve the chances of survival.