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
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies
admin
2016-04-30
33
问题
A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies on U.S. flights every day. Most of them are not grave; fainting, dizziness and hyperventilation(换气过度)are the most frequent complaints. But 13% of them—roughly four a day—are serious enough to require a pilot to change course. The most common of the serious emergencies include heart trouble(46%), strokes and other neurological problems(18%), and difficult breathing(6%).
Let’s face it: plane riders are stressful. For starters, cabin pressures at high altitudes are set at roughly what they would be if you lived at 5,000 to 8,000 feet above sea level. Most people can tolerate these pressures pretty easily, but passengers with heart disease may experience chest pains as a result of the reduced amount of oxygen flowing through their blood. Low pressure can also cause the air in body cavities to expand—as much as 30%. Again, most people won’t notice anything beyond mild stomach cramping. But if you’ve recently had an operation, your wound could open. And if a medical device has been implanted in your body—a splint, a tracheotomy(气管切开术)tube or a catheter(导管)—it could expand and cause injury.
Another common in-flight problem is deep venous thrombosis(深静脉血栓)—the so-called economy-class syndrome. When you sit too long in a cramped position, the blood in our legs tends to clot. Most people just get sore calves. But blood clots, left untreated, could travel to the lungs, causing breathing difficulties and even death. Such clots are readily prevented by keeping blood flowing; walk and stretch your legs when possible.
Whatever you do, don’t panic. Things are looking up on the in-flight-emergency front. Doctors who come to passengers’ aid used to worry about getting sued; their fears have lifted somewhat since the 1998 Aviation Medical Assistance Act gave them "good Samaritan" protection. And thanks to more recent legislation, flights with at least one attendant are starting to install emergency medical kits with automated defibrillators(电击去颤器)to treat heart attacks.
Are you still wondering if you are healthy enough to fly? If you can walk 150 ft. or climb a flight of stairs without getting winded, you’ll probably do just fine. Having a doctor close by doesn’t hurt, either.
According to the passage, the expansion of air in body cavities can result in ______.
选项
A、heart attack
B、chest pain
C、stomach cramping
D、difficult breathing
答案
C
解析
第2段第4句提到了“体腔内空气膨胀”,接下来三句分别列出了这种现象可能导致的三种病症,其中选项C在第5句提到,为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/fCG7777K
0
大学英语六级
相关试题推荐
Wal-MartA)Wal-Martismorethanjusttheworld’slargestretailer.Itisaneconomicforce,aculturalphenomenonandalightni
A、Freefoodandlodging.B、LearningEnglish.C、StayingwithEnglishfamilies.D、Meetingyoungpeople.D细节题。互惠生制度使得那些女孩们可以与英国家庭住在
Learningisanessentialprocessforlivingthingstoacquirenecessaryskillsandbehaviors.Scientistshavealreadyfoundthat
Thereasonfruitsandvegetablesaresoimportanttoyouroverallhealthisthattheyaremajorpurveyorsofantioxidants.A
WhenIwasachild,myteethusedto【B1】______inseveraldifferentdirections,and【B2】______thatinvolvedratherexpensive【B3】__
Ithinkthat,fromabiologicalstandpoint,humanlifealmostreadslikeapoem.Ithasitsownrhythmandbeat,itsinternalcy
A、Twoimportanttestsofanewairlinerbecauseitisputintouse.B、Howtocarryouttanktestinthewater.C、Howpilotscarr
Likemostpeople,I’velongunderstoodthatIwillbejudgedbymyoccupation,thatmyprofessionisagaugepeopleusetoseeh
Peopletendtounderestimatetheirlifeexpectancy,andit’snotsurprising.It’sthelook-aroundproblemagain:You【C1】______fr
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterprise.It’s【B1】______economyinwhichconsumersdeterm
随机试题
劳动安全卫生的立法最早产生于()
激活胃蛋白酶原的是
阴阳双方存在着相互排斥、相互斗争、相互制约的关系为()
以下可以治疗高血压的是
世界银行的贷款方式主要包括()。
公共建筑对外围护结构进行节能改造时,应复核、验算原结构的()。
右图①②③表示人体细胞间信息传递的三种主要方式。下列描述错误的是()。
普通树叶的宽与长之比,蝴蝶身长与双翅展开后的长度之比都接近0.618。人的肚脐是黄金分割的黄金点,肚脐上下的比值是0.618;人的膝盖至脚后跟与膝盖至肚脐之比为0.618;咽喉至头顶与咽喉至肚脐之比恰好也是0.618。人在精神愉快时脑电波频率下限是8赫兹,
基层人民法院和它派出的法庭,审理事实清楚、权利义务关系明确、争议不大的简单的民事案件,标的额为各省、自治区、直辖市上年度就业人员年平均工资30%以下的,实行()。
关于EDI说法正确的是
最新回复
(
0
)