日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

 
 
 

New heart stents better than old ones, study says(視頻)

中國日報網 2012-09-05 11:17

 

Get Flash Player

Get Flash Player

Download

Stents are used to keep coronary arteries open after a procedure called angioplasty. Some stents contain medicine that is released over time. It was thought that these stents would be more effective than plain metal ones, but early studies showed patients who had medicated stents were more llikely to have a heart attack than patients who got plain stents. Now there's a new generation of stents that release medication and a new study about their performance.

A heart stent is a mesh tube made of metal that, when inserted into an artery, keeps it open.

Stents can be metal only or they can contain medicine released once the stent is in place.

These are called drug-eluting stents. And the medication they release helps the artery remain open so blood can easily flow through it.

But studies show that even with drug-eluting stents, some patients still have heart attacks. And earlier studies concluded that drug-eluting stents could actually increase the risk.

Dr. Stephan Windecker heads the interventional cardiology program at Bern University Hospital in Switzerland. He organized a study on a new generation of drug-eluting stents and compared them to the plain metal variety.

“There were concerns that, actually, these drug-eluting stents may lead to adverse events such as occlusion [closing] of the artery with blood clots," said Windecker.

Dr. Windecker and other researchers studied more than 1,000 heart patients who were having an emergency heart procedure. About half received a bare-metal stent while the rest received the latest medicated stent. The medicine was on a biodegradable substance.

“That is a polymer which degrades into water and carbon dioxide during a period of six to nine months after the drug has been released and renders the stent surface more closely to a bare-metal stent," he said.

A year later, the researchers found those who got the drug-eluting stent had fewer heart problems than those who received the bare-metal variety.

“The occurrence of new heart attacks within that treated segment was slower with the biodegradable polymer as compared to the bare-metal stent, and it reduces the incidences of serious cardiovascular events by more than 50 percent," said Windecker.

Dr. Windecker says these newest drug-eluting stents made with polymers that dissolve are better than other medicated stents made with polymers that don't dissolve.

Ideally, a layer of cells that lines the artery will grow over the stent, making it, in a sense, part of the body.

The study was published in the Journal of the American Medical Association.

heart stent: 心臟支架

相關閱讀

Health Experts: One last push needed to eliminate polio(視頻)

Indicators show US economic recovery slow, uneven(視頻)

The legal battle between Apple and SamsungDownloa

Learning First Aid: What to do until medical help arrives

(來源:VOA 編輯:Julie)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883561聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。

中國日報網雙語新聞

掃描左側二維碼

添加Chinadaily_Mobile
你想看的我們這兒都有!

中國日報雙語手機報

點擊左側圖標查看訂閱方式

中國首份雙語手機報
學英語看資訊一個都不能少!

關注和訂閱

本文相關閱讀
人氣排行
熱搜詞
 
 
精華欄目
 

閱讀

詞匯

視聽

翻譯

口語

合作

 

關于我們 | 聯系方式 | 招聘信息

Copyright by chinadaily.com.cn. All rights reserved. None of this material may be used for any commercial or public use. Reproduction in whole or in part without permission is prohibited. 版權聲明:本網站所刊登的中國日報網英語點津內容,版權屬中國日報網所有,未經協議授權,禁止下載使用。 歡迎愿意與本網站合作的單位或個人與我們聯系。

電話:8610-84883645

傳真:8610-84883500

Email: languagetips@chinadaily.com.cn

主站蜘蛛池模板: 国产黄页 | 手机看片亚洲 | 欧美片 | 天天干视频在线观看 | 日韩精品六区 | 伊人激情综合网 | 狠狠干2019 | 午夜欧美在线 | 精品美女视频在线观看免费软件 | 妇女毛片 | 久久99精品国产.久久久久 | 久久中文字幕在线观看 | 久久99操| 这里只有精品视频在线 | 精品国产999 | 香蕉久草| xxxx国产 | 国产成人免费观看 | 成人一级黄色片 | 欧美性综合 | 成年人黄色一级片 | 精品视频久久久久久 | www.午夜 | 精品久久久av | 国产福利网| 欧美性猛交99久久久久99按摩 | 黑人操亚洲女 | 国产精品毛片va一区二区三区 | 香蕉视频在线观看视频 | 亚洲欧美日韩一区 | 国产视频一区在线观看 | 成人福利视频网站 | 最新国产网址 | 四虎影院在线 | 91丁香| 欧美成人一二三区 | 在线中文视频 | 91在线观看网站 | 欧美激情四区 | 男人天堂99| 黄色一级视频免费 |