Look at its four distinctive symptoms: first, chest discomfort that feels like uncomfortable pressure, squeezing, fullness, and pain in the middle of your chest that lasts for more than a few minutes.
The second symptom is discomfort or pain in one or both arms and your back, neck, jaw, or stomach.
The third symptom is shortness of breath.
The last thing you need to watch out for is breaking out in a cold sweat, nausea, and lightheadedness.
These don’t all come at once, but if you see even one or two, it’s time to call 911.
Another step you can take to improve your chances before the ambulance arrives is to chew on an aspirin and pour a vial of nitroglycerin under your tongue. But you need to have these two items at home beforehand.