超声波检查能预测心脏病发作
文章来源:未知 文章作者:enread 发布时间:2011-07-13 02:54 字体: [ ]  进入论坛
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An ultrasound test can tell if people with the human immunodeficiency virus (HIV) and heart disease are at risk of heart attack or death, according to new research reported in Circulation: Cardiovascular Imaging, an American Heart Association journal. Stress echocardiography, better known as a "stress echo," is an ultrasound of the heart during rest and stress that determines risk of heart attack and death in patients with known or suspected blockages1 in the blood vessels2 supplying the heart.

People with HIV are at increased risk for accelerated blockages and subsequent(随后的) heart attack or death.

"We looked at whether stress echo can help predict risk in a high-risk group, HIV patients with known or suspected heart disease and determine whether they have a high or low risk of heart attack and death in the future," said Farooq A.

Chaudhry, M.D., senior author of the study and associate professor of medicine at Columbia University College of Physicians and Surgeons in New York City.

Chaudhry and colleagues performed a stress echo and analyzed3 follow-up data on 311 HIV patients (average age 52 years and 74 percent male) with suspected or known heart disease.

Among the patients studied, 26 percent had an abnormal stress echo. During the average 2.9-year follow-up, 17 nonfatal(非致命的) heart attacks and 14 cardiac deaths occurred.

The prognosis(预知) was good for HIV patients who had normal stress echo findings, researchers said. These patients' average risk for heart attack or death was less than 1 percent per year — the same as that of the general, healthy population.

The risk of heart attack and death rose significantly for HIV patients with abnormal stress echo findings.

Their average risk was nearly 12 percent per year – 10 times higher than that of the normal population and more than three times that of people without HIV who have an abnormal stress echo.

The cumulative4(累积的) survival for HIV patients with normal stress echo results was 100 percent at one year and 98 percent at four years, which is in stark5 comparison to 92 percent at one year and 62 percent at four years in those patients with an abnormal stress echo.

"Although we did not study which treatments are most effective for these patients, HIV patients who have abnormal stress echocardiography should probably be monitored and treated more aggressively to prevent heart attack and death," said Chaudhry, who is also associate chief of cardiology and director of echocardiography at St. Luke's Roosevelt Hospital Center in New York City. "Conversely, patients with a normal stress echo might not need such aggressive interventions6."



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1 blockages 7a8ce9c923a54dedf91f0485f41f78a8     
n.堵塞物( blockage的名词复数 );堵塞,阻塞
参考例句:
  • The storms could increase the risks posed by river blockages. 暴风雨会增加因河道堵塞所造成的危险。 来自互联网
  • An angiogram shows the location and severity of blockages in blood vessels. 冠状动脉造影能够显示血管内的阻塞位置以及阻塞的严重程度。 来自互联网
2 vessels fc9307c2593b522954eadb3ee6c57480     
n.血管( vessel的名词复数 );船;容器;(具有特殊品质或接受特殊品质的)人
参考例句:
  • The river is navigable by vessels of up to 90 tons. 90 吨以下的船只可以从这条河通过。 来自《简明英汉词典》
  • All modern vessels of any size are fitted with radar installations. 所有现代化船只都有雷达装置。 来自《现代汉英综合大词典》
3 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 );分解;解释;对…进行心理分析
参考例句:
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程,因为对他来说,爱是个不可分析的迷。 来自《简明英汉词典》
4 cumulative LyYxo     
adj.累积的,渐增的
参考例句:
  • This drug has a cumulative effect.这种药有渐增的效力。
  • The benefits from eating fish are cumulative.吃鱼的好处要长期才能显现。
5 stark lGszd     
adj.荒凉的;严酷的;完全的;adv.完全地
参考例句:
  • The young man is faced with a stark choice.这位年轻人面临严峻的抉择。
  • He gave a stark denial to the rumor.他对谣言加以完全的否认。
6 interventions b4e9b73905db5b0213891229ce84fdd3     
n.介入,干涉,干预( intervention的名词复数 )
参考例句:
  • Economic analysis of government interventions deserves detailed discussion. 政府对经济的干预应该给予充分的论述。 来自辞典例句
  • The judge's frequent interventions made a mockery of justice. 法官的屡屡干预是对正义的践踏。 来自互联网
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