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Because women have smaller arteries than men, she said, bypass surgery is more difficult to perform and, therefore, more stressful on women

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imageA study led by Dr. Viola Vaccarino of Emory University in Atlanta examined 57,187 patients, 30 percent of them women, who had bypass surgery at 23 medical centers across the country between October 1993 and December 1999.

Among patients ages 50-59, 2.6 percent of women died, compared with 1.1 percent of men. Among patients 80 and older, 9 percent of women died compared with 8.3 percent of men.

The study found that the difference decreases with advancing age.

"It's a puzzling result," Vaccarino said. "We're not able to explain the difference based on our data. It could be a factor we didn't know about or test for."

Overall, 5.3 percent of the women died in the hospital, compared with 2.9 percent of the men. Of the women younger than 50, 3.4 percent died, compared with 1.1 percent of men.

Vaccarino theorized that women tend to have more preexisting illnesses, including stroke and heart failure, and are usually referred for surgery when their heart disease is more severe.

Because women have smaller arteries than men, she said, bypass surgery is more difficult to perform and, therefore, more stressful on women.

"It's probably a combination of those factors," she said of the findings, published in Tuesday's issue of the journal Circulation. "Whatever the case, though, younger women usually have a worse outcome."

Dr. Eric Topol, cardiology chief at the Cleveland Clinic, 인터넷바둑이사이트 believes women under 50 who have bypass surgery likely have an aggressive form of the disease, making them more likely to have complications following surgery.

"Research tells us that women should be protected from coronary disease by a decade" compared with men, said Topol, who was not involved in the study. "Genetics likely play a large role in their development of the disease. Young women, my goodness, you wouldn't expect the death rate to be as high as it is."

Vaccarino said women should not interpret the study to mean bypass surgery is dangerous for them. They should instead recognize the need to be examined for heart disease earlier in life, she said.

"Women just need to be aware that they're a high-risk group," Vaccarino said. "The same group of women, without a bypass, could be doing much worse."

By Joel Anderson© MMII The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed
asked Jul 12 by HaydenGramme (120 points)

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நியூ இரா சிட்டி கேள்வி மற்றும் பதில் வலைதலத் திற்கு வரவேற்கிறோம். , நீங்கள் உங்கள் கேள்விகளுக்கு மற்ற சமூக உறுப்பினர்களின் மூலமாக பதில்களை பெற முடியும். எவர் ஒருவர் 100 கேள்விகள் அல்லது 100 பதில்கள் கொடுக்கிறார்களோ அவர்கள் லங்காவி - மலேசியாவில் நடைபெறும் "ஐ 2 ஐ" பயிற்சி பட்டறையில் இலவசமாக*** கலந்து கொள்ள தகுதிபெறுகிறார்கள். "ஐ 2 ஐ" பயிற்சி பட்டறை மே - 2017 இல் நடைபெற உள்ளது. கேட்கப்படும் அல்லது பதிலளிக்கும் ஒவ்வொரு கேள்விக்கும் 40 மதிப்பெண்கள் வழங்கப்படும். முதலில் 4000 மதிப்பெண்கள் எடுக்கும் நபர் இலவசமாக*** "ஐ 2ஐ" பயிற்சி பட்டறையில் கலந்துகொள்ள வாய்ப்பு அளிக்கப்படும். நீங்கள் புள்ளிகள் பெற கேள்விகள் குறைந்தபட்சம் 160 வார்த்தைகள் மற்றும் 600 வார்த்தைகளுக்கு மிகாமல் . இருக்கவேண்டும். உங்கள் கேள்விகளுக்கு 7 நாட்களுக்குள் பதில் அளிக்கவில்லை என்றல், கேள்வி வலைத்தளத்தில் இருந்து நீக்கப்படும். *** இது ஒரு சில நிபந்தனைகளுக்கு உட்பட்டது
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