cardiac arrest

An increased or irregular heartbeat could mean that you're in danger. ... View slideshow >>

Unexplained anxiety and nervousness, weakness or overwhelming tiredness could be signs of a heart attack. Experts also say that a feeling of impending doom could be a warning from your body. ... View slideshow >>

Women in particular should pay attention to atypical, gas-like abdominal pains. ... View slideshow >>

A temporary loss of consciousness -- or even a feeling of lightheadedness -- could be a symptom of a heart attack. ... View slideshow >>

Women are more likely than men to experience symptoms of nausea or vomiting. ... View slideshow >>

If shortness of breath lasts for more than a couple of seconds, it could be a sign of a heart attack. This symptom may occur with or without chest pain, and is more common in women than in men. ... View slideshow >>

Whether or not you experience chest pain, you may experience pain in other areas of your upper body, including your shoulders, arms, back, neck, teeth or jaw. ... View slideshow >>

This is the symptom that most people associate with a heart attack. It's characterized by severe pressure, fullness, squeezing, pain or discomfort in the center of the chest, lasting for more than a few minutes. The pain may also come and go. ... View slideshow >>

Crushing chest pain? Undoubtedly, you'd worry that you're having a heart attack. But unlike the dramatic portrayal you've seen in the movies, most heart attacks are much less obvious. In fact, one in four heart attack patients won't experience any symptoms at all. So how do you know if your ticker is in danger? ... View slideshow >>