问题 单项选择题

下列哪项不符合心房颤动的临床表现()

A.心律绝对不齐

B.心音强弱不一

C.容易听到第四心音

D.心率>脉率

E.心电图示各导联上P波消失,代之以大小不一、频率350~600/min的f波

答案

参考答案:C

解析:

[解题思路] 心房颤动是十分常见的一种心律失常,心电图表现为窦性节律消失(无P波)而代之以形态、振幅、间期完全不一的房颤波(f波),其频率为350~600/min。临床上表现为心脏听诊第一心音强弱不一、心律极不规则和脉短绌。第四心音产生的机制是舒张晚期的心房肌在克服心室舒张末期压力时加强收缩产生振动的声音,当心房颤动时,心房肌失去正常的收缩功能,因而不可能产生第四心音。

[命题规律] 考查“心房颤动的临床诊断要点”。必须掌握。

单项选择题

A recent poll indicated that half the teenagers in the United States believe that communication between them and their parents is (1) and further that one of the prime causes of this gap is (2) listening behavior. As a(an) (3) in point, one parent believed that her daughter had a severe (4) problem. She was so (5) that she took her to an audiologist to have her ear tested. The audiologist carefully tested both ears and reported back to the parent:"There’s nothing wrong with her hearing. She’s just (6) you out. "

A leading cause of the (7) divorce rate (more than half of all marriages end in divorce) is the failure of husbands and wives to (8) effectively. They don’t listen to each other. Neither person (9) to the actual message sent by the other.

In (10) fashion, political scientists report that a growing number of people believe that their elected and (11) officials are out of (12) with the constituents they are supposedly (13) Why Because they don’t believe that they listen to them. In fact, it seems that sometimes our politicians don’t even listen to themselves. The following is a true story: At a national (14) conference held in Albuquerque some years ago, then Senator Joseph Montoya was (15) a copy of a press release by a press aide shortly before he got up before the audience to (16) a speech. When he rose to speak, (17) the horror of the press aide and the (18) of his audience, Montoya began reading the press release, not his speech. He began, "For immediate release. Senator Joseph M. Montoya, Democrat of New Mexico, last night told the National... " Montoya read the entire six page release, (19) with the statement that he "was repeatedly (20) by applause.

13()

A.leading

B.representing

C.delegating

D.supporting

填空题