2. 考研
  3. Cardiologists have pioneered the world’s first non-surgical bypass operation to turn a vein into an artery using a new technique

Cardiologists have pioneered the world’s first non-surgical bypass operation to turn a vein into an artery using a new technique

admin2015-04-10  62
问题     Cardiologists have pioneered the world’s first non-surgical bypass operation to turn a vein into an artery using a new technique to divert blood flow in a man with severe heart disease. The keyhole procedure, which avoids the extensive invasive surgery of a conventional bypass, will offer hope to tens of thousands of people at risk from heart attacks.
    Coronary heart disease, where the arteries are progressively silted up with fatty deposits, is responsible in a major industrial country like Britain for more than 160,000 deaths each year. Although major heart surgery is becoming commonplace, with more than 28,000 bypass operations in the UK annually, it is traumatic for patients and involves a long recovery period.
    The new technique was carried out by an international team of doctors who performed the non-invasive surgery on a 53-year-old German patient. According to a special report in Circulation, journal of the American Heart Association, cardiologists developed a special catheter which was inserted into one of his leg arteries, threaded up through the aorta to the top of the diseased artery, which was the only part still open and receiving blood. Then, guided by ultrasound, a physician pushed a needle from inside the catheter through the artery wall and into the adjacent vein. A thin, flexible wire was threaded through the needle and the needle and catheter were withdrawn, leaving the wire behind and a small angioplasty balloon, which was used to widen the channel. Finally, the vein was blocked off just above the new channel allowing blood from the artery to be re-routed down the vein.
    After the procedure, the vein effectively became an artery, carrying blood in the reverse direction from the previous way, and feeding the starved heart tissue with oxygen.
    Dr. Stephen Oesterle, who led the team, said, "This milestone marks the first coronary artery bypass performed with a catheter. The technology offers a realistic hope for truly minimally invasive bypass procedures in the future. One of the most invasive things you can do in medicine is coronary artery bypass surgery. Our ultimate goal is to replace traditional coronary artery bypass with a procedure that does not require surgery. " Dr. Oesterle is director of cardiology at Massachusetts General Hospital and associate professor of medicine at Harvard Medical School in Boston. Melanie Raddon, cardiac nurse at the British Heart Foundation, said it was likely to be many years before the procedure was routinely used in hospitals.
What is Dr. Oesterle’s attitude towards the new bypass?
选项 A、Critical.
B、Positive.
C、Indifferent.
D、Neutral.
答案B
解析 厄斯特勒博士对新的搭桥疗法的态度如何?[A]批评的。[B]正面的。[C]漠不关心的。[D]中立的。文章最后一段介绍了厄斯特勒博士对这种新技术的评价：这种技术是个里程碑，标志着用导管进行的第一个冠状动脉分流手术。这项技术为今后真正最小限度地实行侵人性搭桥手术提供了现实希望。通过这些赞美的话语，可知厄斯特勒博士对此项技术的态度是正面的，所以[B]为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/BC74777K
0

考研英语一

相关试题推荐
随机试题
最新回复(0)