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Fatality risks high in Women with painless heart attacks

There's yet another difference between the sexes.

Women are more likely to have heart attacks that don't announce themselves with crushing chest pain, finds a study just out in JAMA, the Journal of the American Medical Association. And women having heart attacks like these are more likely to die than men.

While pain and discomfort in the chest are classic signs of a heart attack, they're not always present. So the findings serve as reminder to be on the lookout for other symptoms. Shortness of breath, nausea and pain in the jaw or back can also signal a heart attack in progress.

Previous research has pointed to gender differences in heart attack symptoms. But this study is believed to be the biggest. Researchers combed a database of more than 1.1 million heart attack cases looking for clues about heart attacks.

They found 42 percent of women didn't have chest pain when they were admitted to the hospital with heart attacks. compared with about 31 percent of the men. Overall, about 15 percent of the women died in the hospital, compared with 10 percent of men.

Still, gender isn't the only important factor. Age counts, too. As women get older, the symptoms of their heart attacks and the likelihood they'll die from them starts to look a lot more like the picture for men, the study finds.

Why should that be so? The researchers aren't sure, saying the reasons for what they saw are "largely unknown."

There are some theories. It could be that younger women are having a more dangerous kind of heart attack that overcomes the protective effects of the female hormone estrogen. Estrogen falls after menopause.

The findings are "provocative," the researchers write, and merit further investigation. For now, they're recommending that younger women be made more aware of the possibility that a heart attack might not be accompanied by chest pain.

To survive a heart attack, it's important to recognize what's happening and get immediate care. If a patient is more likely to delay, a patient is less likely to be diagnosed promptly and receive life-saving treatment.


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