首页
登录
职称英语
A study published in the New England Journal of Medicine estimated that ther
A study published in the New England Journal of Medicine estimated that ther
游客
2023-08-14
30
管理
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. [br] Heart disease takes up about ______ of the in-flight medical emergencies on US flights.
选项
A、13%
B、46%
C、18%
D、6%
答案
D
解析
根据首段末句,心脏病占飞行中医疗重症的46%;而根据倒数第2句,重症在美国所有飞行中的医疗急症中占13%。结合这两句可知,心脏病应占所有急症中13%的46%,即约6%,因此选项D为本题答案。
转载请注明原文地址:https://tihaiku.com/zcyy/2923945.html
相关试题推荐
[originaltext]W:Steven,ifIgotoEngland,whichonewouldyousayisthebes
[originaltext]W:Steven,ifIgotoEngland,whichonewouldyousayisthebes
[originaltext]W:Steven,ifIgotoEngland,whichonewouldyousayisthebes
[originaltext]W:Steven,ifIgotoEngland,whichonewouldyousayisthebes
[originaltext]W:Jason,actuallyI’mgoingtoEnglandthissummer.M:Really?T
[originaltext]W:We’veallheardthesaying“Laughteristhebestmedicine.”Ho
[originaltext]W:We’veallheardthesaying“Laughteristhebestmedicine.”Ho
[originaltext]W:We’veallheardthesaying“Laughteristhebestmedicine.”Ho
ThreeEnglishdictionariespublishedrecentlyalllayclaimtopossessinga
AstudypublishedintheNewEnglandJournalofMedicineestimatedthatther
随机试题
______areboundmorphemesbecausetheycannotbeusedasseparatewords.A、Roots
Morepeoplethaneveraredrinkingcoffeethesedays—butinsmallerquantiti
阅读下面一段课文,回答下列问题: 和戎诏下十五年,将军不战空临边。朱门沉沉按歌
空载线路的合闸分为两种情况,即正常合闸和()。A.断路器合闸 B.自动重合闸
安装工程措施费的计算方法,下列说法正确的有()A.“安全文明施工费”的计算基础
某一航线上的机票价格上升20%,使得该航线上的旅客需求减少40%,那么该航线上的
转移癌的临床表现是 A.多见于老年,膝关节病变常见,疼痛与关节活动关系密切
在混凝土表层损坏的加固之前,不论采用什么办法,均应先凿除已损坏的混凝土,并对修补
球罐水压试验过程中要进行基础沉降观测,并做好实测记录,正确的观测时点为()
建筑结构应具有的功能有()A.安全性 B.舒适性 C.适用性
最新回复
(
0
)