Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单
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Heart attack心脏病发作
The phrase ‘heart attack’ is commonly used to describe a blockage in a heart artery.这句话â € 〜心脏attackâ € ™是常用来形容淤塞，在心脏动脉。 A more accurate name is myocardial infarction (MI).更准确的名称是心肌梗死（ MI ） 。 An MI is the sudden death of part of the heart muscle cells (myocardium) from a blockage of the blood supply to that part of the heart (coronary artery thrombosis). 1米，是猝死的一部分，心脏肌肉细胞（心肌）从淤塞的血液供应的那部分心脏（冠状动脉血栓） 。
This is the final result of disease of the two coronary arteries that supply the heart muscle with blood and is one of the major killers in the UK. Layers (plaques) of cholesterol build up inside the coronary arteries (atherosclerosis).这是最后的结果，病的两个冠状动脉供应心脏肌肉与血液和是其中一个主要杀手，在英国。层（斑块）的胆固醇，建立内冠状动脉（动脉粥样硬化） 。 These can rupture, blocking the artery through the sudden formation of a blood clot on the ruptured plaque.这些可以破裂，阻塞动脉，通过突然的形成血块对破裂的斑块。
Occasionally the blockage is brought on by spasm of the muscle walls of the coronary arteries.偶尔淤塞的是带来了由痉挛肌肉的墙壁冠状动脉。 It can also be the result of an abnormal, very fast heart rate, where the heart muscle demands more oxygen than the blood supply can provide.它也可以造成一种不正常的，非常快心率，心脏肌肉的要求，更多的氧气比的血液供应，可以提供。
MI occurs in 5 per 1000 people in the UK each year.美发生在5 ％的1000人，在英国每年。 It occurs more often in men than in women, and mostly in people over 40 years old.它更经常地发生在男性多于女性，大多是在人40岁以上。
The process of infarction causes severe pain, and the immediate reduction in heart efficiency causes a range of other symptoms.过程中梗死造成严重的疼痛，并立即减少在心脏的效率，导致一系列其他症状。 Half of those who die from a particular attack do so from heart stoppage (cardiac arrest) within 3 or 4 hours of onset, so anyone suspected of having a heart attack should receive urgent medical attention.一半的谁死，从特定的攻击，这样做从心脏暂停（心跳骤停） 3或4小时发病，所以任何人怀疑有心脏病发作，应接受紧急医疗的重视。
