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Congenital heart defects are structural abnormalities caused by the failure of the heart to develop normally before birth.
Coronary artery disease is atherosclerosis of the coronary arteries that reduces the blood supply to the heart muscle.This creates an insufficient supply of oxygen that can cause angina (pain), a myocardial infarction(heart attack), or death. End-stage coronary artery disease is characterized by unrelenting angina pain and a severely limited lifestyle.
Angina, also known as angina pectoris, is a condition of episodes of severe chest pain due to inadequate blood flow to the myocardium. These episodes are due to ischemia of the heart muscle.
A myocardial infarction,also known as a heart attack, is the occlusion of one or more coronary arteries caused by plaque buildup.
词汇：
congenital heart defects 先天性心脏病
coronary artery disease 冠心病
atherosclerosis 动脉粥样硬化 ather/o（脂肪）斑块 scler硬化 -osis表示一种状态
angina/angina pectoris 心绞痛
myocardial infarction 心肌梗塞
end-stage coronary artery disease 终末期冠状动脉疾病
ischemia 缺血
plaque 斑块
参考译文：
先天性心脏病是由于心脏在出生前未能正常发育而造成的结构异常。
冠状动脉疾病是由于冠状动脉粥样硬化，减少了心肌的血液供应造成的。这会引起供氧不足，导致心绞痛、心肌梗塞或死亡。终末期冠心病的特点是心绞痛持续不断，生活方式严重受限。
心绞痛，又称 angina pectoris，是由于心肌的供血不足而引起的严重胸痛发作的一种疾病。这种发作是由于心肌缺血引起的。
心肌梗塞，也称为heart attack，是由于粥样硬化斑块聚集引起一个或多个冠状动脉分支闭塞引起的。
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