问题 单项选择题

患者男性,49岁。因心悸、胸闷,晕厥1次就诊。心电图如图5-16所示,应考虑为()。

A.室性心动过速

B.预激综合征合并心房颤动

C.室上性心动过速伴室内差异传导

D.心房颤动伴室内差异传导

E.非阵发性心动过速

答案

参考答案:B

解析:预激综合征合并心房颤动解析:心电图显示P波消失,心室率很快,最快可达300次/分,R-R间期极不规则,QRS波形态各异,宽窄不等,宽窄的QRS波起始部可见预激波,提示预激综合征合并心房颤动。患者行射频消融术治疗后,宽QRS波消失。需要强调:预激综合征如合并心房颤动,可引起快速的心室率,甚至发生室颤,属一种严重的心律失常类型。

判断题
单项选择题

The International Whaling Commission’s (IWC) decision to retain its ban on whaling does not mean that the killings will stop. Quite the (1) .

Save the Whale. It’s a phrase which became annoying with (2) , an unfavorable shorthand for liberal consciences. How appalling, then, that in the year 2010, it should be pressed (3) service again, to fight the whaling nations: Norway and Iceland, who exempted themselves from the 1986 prohibition (4) by the IWC, and Japan, which hunts whales under cover of " (5) research".

I am completely (6) by this week’s events in Morocco, where talks broke down. In my heart, I agree with those who have (7) the news that this year’s negotiations of the IWC have broken up, and (8) the prohibition would not be lifted (as the US proposed in a desperate (9) to break the deadlock). Yet reason (10) something else. If we do not (11) some kind of new control, the (12) will be able to go on with their slaughter (13) . Membership of the IWC is (14) , and the ban was only ever intended to be (15) . Japan, which has been buying the votes of nations with no interest in whaling (only in the 16 Japan offers in turn), will continue to press its case, having invested millions of dollars in its (17) . Geoffrey Palmer, New Zealand’s Commissioner at the IWC, has proposed a year-long (18) period. In the meantime, more whales will die.

We stand at a crossroad for whales. We see the (19) existence of these animals as an indicator of ecological threat. As symbols of an endangered world, they evoke, and provoke, a feeling that they have the same qualities as human on a scale equal to their size and supposed (20) . To some this is so much sentimental words in the New Age.

18()

A.turning off

B.lifting off

C.shutting off

D.cooling off