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[考博英语]2019医学博士英语作文范文(三)_考博_旭晨教育

 2019医学博士英语作文范文(三)

2019医学博士英语考试即将于3.9日开考,考前旭晨教育考博频道整理了10篇2019医学博士英语作文范文供大家参考,希望大家顺利通过国家线。

2019医学博士英语作文范文汇总

Your heart muscle needs oxygen to survive. A heart attack occurs when the blood flow that brings oxygen to the heart muscle is severely reduced or cut off completely. This happens because coronary arteries that supply the heart muscle with blood flow can slowly become narrow from a buildup of fat, cholesterol and other substances that together are called plaque [plæk] . This slow process is known as atherosclerosis [ˌæθəroʊsklɪ'roʊsɪs] . When a plaque in a heart artery breaks, a blood clot forms around the plaque.This blood clot can block the blood flow through the heart muscle. When the heart muscle is starved for oxygen and nutrients, it is called ischemia [ɪs'kimɪr] . When damage or death of part of the heart muscle occurs as a result of ischemia, it is called a heart attack ormyocardial infarction [ˌmaiəuˈkɑ:diəl inˈfɑ:kʃən] (MI). About every 40 seconds, someone in the United States has a myocardial infarction (heart attack).

心肌需要氧气才能存活。心脏病发作时,携带氧气通向心肌的血液急剧减少甚至被完全阻断。其主要原因是脂肪、胆固醇和其他物质聚积,逐渐在血管里形成斑块,斑块使供应心肌的冠状动脉变窄,这个缓慢的过程被称为动脉粥样硬化。当冠状动脉内的斑块破裂,血凝块在斑块周围形成,血凝块可阻止血液流向心肌。当心肌缺乏氧气和营养时,称为缺血。因缺血导致部分心肌发生损伤或死亡称为心脏病发作或心肌梗塞(MI)。大约每40秒钟在美国就会有一个人出现心肌梗塞(心脏病发作)。

我国心血管疾病现状

据国家心血管病中心发布的《中国心血管病报告2012》数据显示,中国心血管病现患人数已高达2.9亿,即每10个成年人中就有2人患心血管病,每年约350万人死于心血管病,相当于每10秒就有1人死于心血管病。而另一个由国家心血管病中心联合阜外心血管病医院组织实施的临床研究显示,在中国,心血管病患者的住院人数在2001年至2010年的十年间增加了四倍多。2001年因心脏病住院的平均每十万人中有3.7人,到2010年就飙升至15.8人。



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