当前位置:首页 > English > pregnancy and family > General Health > ‘Beating Heart‘ Bypass Not Better?

‘Beating Heart‘ Bypass Not Better?

来源:www.webmd.com 作者:MirandaHitti 2007-2-22
336*280 ads

摘要: 20, 2007 -- “Beating heart“ bypass surgery may not trump traditional bypass surgery for low-risk patients, a new study shows。 In traditional bypass surgery, doctors stop the patients‘ heart during bypass surgery and hook the patient up to a heart-lung bypass machine during the operation。 But......



Feb. 20, 2007 -- "Beating heart" bypass surgery may not trump traditional bypass surgery for low-risk patients, a new study shows.

In traditional bypass surgery, doctors stop the patients' heart during bypass surgery and hook the patient up to a heart-lung bypass machine during the operation.

But during "beating heart" bypass (also called "off-pump" bypass), doctors operate on the patient's beating heart, without using a heart-lung machine.

Heart bypass is done when coronary arteries, which supply blood to heart muscle, are blocked.

During heart bypass, surgeons take a blood vessel from the patient's chest, legs, or arms and graft it onto the heart to bypass the coronary blockage.

Past studies have suggested that traditional bypass surgery might boost the odds of mental decline. Those findings had raised interest in beating heart bypass.

Both procedures are major surgery, and certain risk factors may rule out beating heart bypass for some patients.

Bypass Study

The new study comes from Dutch doctors including Diederik van Dijk, MD, PhD, of the anesthesiology department of University Medical Center Utrecht in Utrecht, the Netherlands.

They randomly assigned 281 low-risk bypass patients to get beating heart bypass or traditional bypass. The patients were 61 years old, on average.

Before surgery, the patients took tests of mental skills including attention, memory, and manual dexterity.

Five years after surgery, 260 of the patients repeated the mental skills test. Half of the patients in both groups showed a 20% decline in their mental skills test scores.

Those declines weren't necessarily due to the bypass surgeries. Simply getting older might have been responsible, the doctors note.

The study also shows that a similar percentage of patients in both groups -- 30 patients in the beating heart bypass group (21%) and 25 patients in the traditional bypass group (18%) -- had a heart attackheart attack, strokestroke, heart-related death, or more heart surgery during the five-year follow-up period.

The use of beating heart bypass instead of traditional bypass "had no effect on cognitive or cardiac outcome five years after the procedure" in these low-risk patients, the researchers conclude.

The study appears in The Journal of the American Medical Association.


SOURCES: van Dijk, D. The Journal of the American Medical Association, Feb. 21, 2007; vol 297: pp 701-708. WebMD Medical Reference provided in collaboration with The Cleveland Clinic: "Heart Disease: Bypass Surgery." News release, JAMA/Archives.


医学百科App—医学基础知识学习工具


页:
返回顶部】【打印本文】【放入收藏夹】【收藏到新浪】【发布评论



察看关于《‘Beating Heart‘ Bypass Not Better?》的讨论


关闭

网站地图 | RSS订阅 | 图文 | 版权说明 | 友情链接
Copyright © 2008 39kf.com All rights reserved. 医源世界 版权所有
医源世界所刊载之内容一般仅用于教育目的。您从医源世界获取的信息不得直接用于诊断、治疗疾病或应对您的健康问题。如果您怀疑自己有健康问题,请直接咨询您的保健医生。医源世界、作者、编辑都将不负任何责任和义务。
本站内容来源于网络,转载仅为传播信息促进医药行业发展,如果我们的行为侵犯了您的权益,请及时与我们联系我们将在收到通知后妥善处理该部分内容
联系Email: