Dr. Owen R. Thompson explains what you need to do when someone is having a heart attack. Most heart attacks involve discomfort in the center of the chest that lasts more than a few minutes, or that goes away and comes back. It can feel like uncomfortable pressure, squeezing, fullness or pain. Symptoms can include pain or discomfort in one or both arms, the back, neck, jaw or stomach. Heart attack and stroke are life-and-death emergencies — every second counts. If you see or have any of the listed symptoms, immediately call 112 or your emergency response number. Not all these signs occur in every heart attack or stroke. Sometimes they go away and return. If some occur, get help fast! Today heart attack and stroke victims can benefit from new medications and treatments unavailable to patients in years past. For example, clot-busting drugs can stop some heart attacks and strokes in progress, reducing disability and saving lives. But to be effective, these drugs must be given relatively qu...