What is coronary artery disease? 什么是冠状动脉疾病呢？
Coronary artery disease (CAD) is the most common form of heart disease.冠状动脉疾病（ CAD ）是最常见的形式，心脏病。 In CAD the coronary arteries, the vessels that bring oxygen-rich blood to the tissues of the heart, become blocked by deposits of a fatty substance called plaque.在CAD冠状动脉，船只带来富氧的血液组织的核心，成为封锁的存款，脂肪物质的所谓牌匾。 As plaque builds, the arteries become narrower and less oxygen and nutrients are transported to the heart.作为斑块的建立，成为动脉变窄，少氧气和营养输送到心脏。 This condition can lead to serious problems, such as angina (pain caused by not enough oxygen-carrying blood reaching the heart) and heart attack.这种情况可导致严重问题，如心绞痛（造成的痛苦没有足够的氧进行血液到达心脏）和心脏病发作。 In a heart attack, or myocardial infarction, there is such poor oxygen supply to the heart that part of the heart muscle dies.在心脏病发作，或心肌梗死，有这样的穷人的氧气供应心脏的那部分心脏肌肉去世。 If a sufficiently large portion of the heart is affected, it may no longer be able to pump blood efficiently to the rest of the body, resulting in death or chronic heart failure.如果有足够的大部份的心脏，是受影响的，它可能不再能够有效的血液泵向其余的机构，造成死亡或慢性充血性心力衰竭。
Approximately 7 million Americans suffer from CAD.大约有700万美国人受到从CAD 。 It is the leading cause of death among American men and women; more than 500,000 Americans die of CAD-related heart attacks each year.这是最首要的死亡原因之间的美国男性和女性;以上五十万美国人死亡的CAD有关的心脏病发作，每年。
There are several factors that can each increase the risk of developing CAD:有几个因素可以相互的风险增加开发CAD ：
- High blood pressure血压高的压力
- High cholesterol levels高胆固醇水平
- Smoking吸烟
- Obesity肥胖
- Physical inactivity身体活动
- Diabetes糖尿病
- Family history of CAD家族病史的CAD
- Gender性别
- Age年龄
A person with CAD may or may not have symptoms.一个人与CAD可能会或不会有症状。 Symptoms can include chest pain from angina, shortness of breath, lightheadedness, cold sweats, or nausea.症状包括胸痛由心绞痛，气促， lightheadedness ，冒冷汗，或恶心。
