首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
There is a great deal of controversy within the medical profession regarding the use and value of the coronary bypass procedure,
There is a great deal of controversy within the medical profession regarding the use and value of the coronary bypass procedure,
admin
2010-03-26
15
问题
There is a great deal of controversy within the medical profession regarding the use and value of the coronary bypass procedure, and for more than eight years the American Heart Association has discussed the question at its regular scientific sessions. The bypass operation consists of open heart surgery in which the physician takes a vein from the patient’s leg and implants it near the heart to construct a passage around the blockage in a clogged artery so that blood can flow freely by. The operation is performed on about 100,000 persons a year in the U.S. and costs approximately $10,000. The procedure is designed to relieve the pain of angina pectoris (心绞痛) which occurs when the blood supply is obstructed and also to allow the patient more freedom of sustained activity.
In persons with advanced heart disease and blockage in several arteries, the bypass operation is considered by most doctors to be the preferable means of prolonging life. In the case of those with a less advanced disease, or where only one artery is involved, the advisability of the procedure is much more controversial. The operation doesn’t cure the disease that caused the blocked artery in the first place. According to some studies, somewhere around half of the patients who have had the bypass to relieve one artery will have another blocked artery within five years, and in some cases even within one year.
There is of course a mortality rate in any major operation which varies from physician to physician and hospital to hospital. The danger to the patient is greatly increased if he is in generally poor condition, very advanced in age, or suffering from some serious or debilitating(衰弱,衰竭)illness. It is essential that the operation be performed by a skilled surgeon knowledgeable about this particular technique and in a hospital with the best possible facilities for his use.
What are the usual results of the bypass operation?
选项
A、The patient is relieved of pain.
B、The patient’s arterial condition is permanently cured.
C、The patient has a 50% chance of being incapacitated again within a year.
D、The patient is not likely to have trouble in his other arteries if he has one artery bypass by surgery.
答案
A
解析
文章第三段述及该手术之所以具有一定的争议性,其原因首先在于:分流术并不能完全治愈动脉硬化引起的疾病:其次,根据相关研究表明,约50%经过手术的病人在五年内,有时甚至在一年内有复发的可能,据此,排除B、C、D三项,得到正确答案A。
转载请注明原文地址:https://jikaoti.com/ti/cPdFFFFM
0
大学英语四级
相关试题推荐
Theauthorthinksthatthetrendtowardsarapidriseinconsumptionwas"undesirable"because______.Costincreasedmostgreat
A、Herdaughterisn’tinherclass.B、Sheisn’trelatedtothestudent.C、Shedoesn’tthinkthatshelooksliketheStudent.D、Th
A、Herhusbandshouldseeadoctor.B、Herhusbandneedstovisitafitnesstrainer.C、Herhusbandshouldstartwithalightworko
A、ShewasAmerica’sfirstAfrican-Americanbroadcaster.B、Ordinarypeoplelovedher.C、Shedealtwithverypersonalissuesina
A、TheArcticland.B、Activevolcano.C、Iceberg.D、Iceage.C本题问“教授的讲座主题是什么?”女士说“讲座很有趣。教授谈了有关南极西部冰层下面的活火山的内容”。电就是说,讲座的主要内容是活火山。故[
A、ThemanasksCaroltoattendMr.White’sclasswithhim.B、ThemanasksCaroltolendhimthenotesfromthehistoryclass.C、
Accordingtotheauthor,educationissuretobelimitedtoacertainscopewithouttheuseofmedia.WiththeuseoftheInter
Internetis______(起着越来越重要的作用)inourmodemsociety.
WhatdidChinesepeopleusuallyhaveforbreakfast15yearsago?Whatistheauthor’sattitudetowardChina’sgastronomicrevol
Withtheadvancementofmedicaltechnologyandsocialwelfare,oldageis,tomanypeople,nolongeraproblem.However,therei
随机试题
针道固位形的深度一般要求穿过釉牙本质界到达牙本质内约
治疗落枕的主穴是()
哪些信件属于要约?为什么?如果建筑公司发给乙厂的信由于邮局的原因而没能在4月20日送达给乙厂的,乙厂并没有表示是否接受这封迟到的信函。建筑公司和乙厂的买卖合同是否成立?请说明理由。
在中国甲公司与外国乙公司拟订的设立中外合资经营企业的协议草案中,下列有关出资方式的约定,符合中外合资经营企业法律制度规定的是()。
一般很少提出个人要求,分析问题比较合情合理,能够理解导游的工作,也希望导游能够理解和尊重他们,注重对旅游风景的独自欣赏。以上是对()游客的描述。
葡萄酒酿制期间,酵母细胞内由ADP转化为ATP的过程()。
由于地球上的化石燃料储量有限,全球掀起了寻找替代能源的热潮,生物质燃料就是其中的一种替代能源。以下关于生物质燃料的说法不正确的是()。
下列说法正确的是()。
以下说法中正确的是(48)。
Whatdoweknowabouttheoriginoflanguage?
最新回复
(
0
)