美研究人员发现伟哥能帮助减轻心脏压力美研究人员发现伟哥能帮助减轻心脏压力
viagra, used to treat impotence in men, has been found to reduce the harmful effects of stress on the heart, scientists said yesterday.
the drug was originally designed as a candidate treatment for heart disease before its effect on genita...
美研究人员发现伟哥能帮助减轻心脏压力
viagra, used to treat impotence in men, has been found to reduce the harmful effects of stress on the heart, scientists said yesterday.
the drug was originally designed as a candidate treatment for heart disease before its effect on genital blood vessels was appreciated.
now researchers at the johns hopkins university school of medicine in baltimore have measured the strength of heart beats in a group of 35 adult volunteer patients in whom stress was induced with the drug dobutamine. this chemical mimics the effects of emotional or physical stress by increasing the force of heartbeats and boosting the flow of blood in the body, which can lead to permanently raised blood pressure.
the men and women were randomly assigned to two groups, either to be treated with viagra or a placebo. in those given viagra, the strength of the heart’s contractions was reduced by half, from 150 per cent to 75 per cent.
writing in the journal circulation, prof david kass, who led the study, says: “sildenafil effectively puts a ’brake’ on chemical stimulation of
the heart. knowing more about the effects of sildenafil on heart function will allow for safer evaluation of its use as a treatment for heart problems.”
dr charmaine griffiths, of the british heart foundation, said: “viagra has been a real advance in treating impotence.
“the findings that viagra affects blood pressure are not surprising -
before it was known as a successful treatment for impotence, it was actually being researched for lowering effects on blood pressure.
“however, if you have a heart condition you should check with your doctor before taking viagra.
“mixing this drug with other heart medicines or taking it if you have angina without advice from a health professional or gp can be dangerous for heart patients,” she said.
上一篇英语: 散文:机遇只垂青那些有准备的人下一篇英语: -散
文-OntheFeelingofImmortalityinYouth查看更多关于英文诗词的文章
网友同时还浏览了:
我住在大海边
At History I m Hopeless
完美人生
懦夫在死之前，就已经死过多次
The Challenge
A throe upon the features
本文档为【美研究人员发现伟哥能帮助减轻心脏压力】，请使用软件OFFICE或WPS软件打开。作品中的文字与图均可以修改和编辑，
图片更改请在作品中右键图片并更换，文字修改请直接点击文字进行修改，也可以新增和删除文档中的内容。
该文档来自用户分享，如有侵权行为请发邮件ishare@vip.sina.com联系网站客服，我们会及时删除。
[版权声明] 本站所有资料为用户分享产生，若发现您的权利被侵害，请联系客服邮件isharekefu@iask.cn，我们尽快处理。
本作品所展示的图片、画像、字体、音乐的版权可能需版权方额外授权，请谨慎使用。
网站提供的党政主题相关内容(国旗、国徽、党徽..)目的在于配合国家政策宣传，仅限个人学习分享使用，禁止用于任何广告和商用目的。
浙公网安备 33021202002483