醫(yī)學(xué)博士英語(yǔ)作文范文（三）

醫(yī)學(xué)博士英語(yǔ)作文范文

希賽網(wǎng)考博英語(yǔ)為廣大考生整理了10篇醫(yī)學(xué)博士英語(yǔ)作文范文，供大家參考學(xué)習(xí)。希望能為大家在考博中提供到幫助。

醫(yī)學(xué)博士英語(yǔ)作文范文匯總

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 [pl?k] . This slow process is known as atherosclerosis [??θ?ro?skl?'ro?s?s] . 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 [?s'kim?r] . When damage or death of part of the heart muscle occurs as a result of ischemia, it is called a heart attack ormyocardial infarction [?mai?u?kɑ:di?l in?fɑ:k??n] (MI). About every 40 seconds, someone in the United States has a myocardial infarction (heart attack).

心肌需要氧氣才能存活。心臟病發(fā)作時(shí)，攜帶氧氣通向心肌的血液急劇減少甚至被完全阻斷。其主要原因是脂肪、膽固醇和其他物質(zhì)聚積，逐漸在血管里形成斑塊，斑塊使供應(yīng)心肌的冠狀動(dòng)脈變窄，這個(gè)緩慢的過(guò)程被稱為動(dòng)脈粥樣硬化。當(dāng)冠狀動(dòng)脈內(nèi)的斑塊破裂，血凝塊在斑塊周圍形成，血凝塊可阻止血液流向心肌。當(dāng)心肌缺乏氧氣和營(yíng)養(yǎng)時(shí)，稱為缺血。因缺血導(dǎo)致部分心肌發(fā)生損傷或死亡稱為心臟病發(fā)作或心肌梗塞(MI)。大約每40秒鐘在美國(guó)就會(huì)有一個(gè)人出現(xiàn)心肌梗塞(心臟病發(fā)作)。

我國(guó)心血管疾病現(xiàn)狀

據(jù)心血管病中心發(fā)布的《中國(guó)心血管病報(bào)告2012》數(shù)據(jù)顯示，中國(guó)心血管病現(xiàn)患人數(shù)已高達(dá)2.9億，即每10個(gè)成年人中就有2人患心血管病，每年約350萬(wàn)人死于心血管病，相當(dāng)于每10秒就有1人死于心血管病。而另一個(gè)由心血管病中心聯(lián)合阜外心血管病醫(yī)院組織實(shí)施的臨床研究顯示，在中國(guó)，心血管病患者的住院人數(shù)在2001年至2010年的十年間增加了四倍多。2001年因心臟病住院的平均每十萬(wàn)人中有3.7人，到2010年就飆升至15.8人。