美国发现高血压前期大大增加心脏病发作的风险

 
 
一项最新研究显示：高血压前期患者心脏病发作和患心脏病的风险远远高于以前的预期。2005年8月《脑卒中》期刊报道了这些结果。

正常血压低于120/80mmHg。高血压前期被定义为收缩期血压在120至139和/或者舒张期血压在80至89mmHg之间。 高血压至血压在140/90mmHg或者更高的水平。

研究人员检查了Framingham研究的现存资料，发现高血压前期的患者比血压正常的人，心脏病发作的风险高出3倍之多，患心脏病的风险高出1.7倍。但是，研究人员没有发现这些高血压前期患者的患脑卒中的发现有显著性增加。

美国新泽西医学与口腔学大学脑血管项目教授和主任、首席作者Adnan I. Querishi博士指出：“在这个灰色区域的不同影响，或许由血压之外的因素介导的，例如胰岛素抵抗。”

直到目前这项研究为止，医生以及大众对“高血压前期”意味着什么都知之甚少。美国国家委员会首次描述了正常血压与高血压之间这个灰色区域的危害。

Quershi博士指出：“如果我们能够排除高血压前期，我们就能够防止大约47％的心脏病发作。”

Prehypertension Triples Heart Risk
 
A new study has revealed that people with prehypertension are at much higher risk of heart attack and heart disease than previously thought. The results were reported in the August 2005 issue of Stroke.

Normal blood pressure is lower than 120/80 mm Hg. Prehypertension is defined as systolic blood pressure between 120 and 139 and/or diastolic pressure between 80 and 89 mm Hg. Hypertension is blood pressure that is 140/90 mm Hg or higher.

Researchers examined existing data from the Framingham Study and found that a prehypertensive person is more than three times likely to have a heart attack than a person with normal pressure and 1.7 times more likely to have heart disease. However, they did not find a significant increase in the risk of stroke among people with prehypertension.

“The differential effect in this gray zone may be mediated through factors other than blood pressure, such as insulin resistance,” observed lead author Adnan I. Quershi, M.D., professor and director of the cerebrovascular program at the University of Medicine and Dentistry of New Jersey (Newark, USA).

Until the current study, doctors and the public knew very little about what the term “prehypertension” meant. It was coined by a U.S. national committee to describe the gray area between normal blood pressure and hypertension.

"If we were to eliminate prehypertension, we could potentially prevent about 47% of all heart attacks,” said Dr. Quershi.