【单选题】【消耗次数：1】
关房室传导阻滞，下列说法错误的是
①
一度：P-R间期≥0.21s
②
文氏现象为二度Ⅰ型
③
三度：P后均继以相关QRS波群
④
二度Ⅱ型P波呈比例传导
⑤
二度Ⅱ型和三度统称为高度房室传导阻滞
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相关题目
【单选题】
下列哪项符合二度I型房室传导阻滞的心电图表现
①
P-P间期及R-R间期均不等
②
相邻的P-P间期进行性缩短
③
包含受阻P波在内的R-R间期小于正常P-P间期的两倍
④
最常见的传导比例为4：2
⑤
受阻P波前的一个P-R间期缩短
【多选题】
关于三度房室传导阻滞的特点的描述，下列正确的有
①
P波与QRS波群无固定关系
②
P-P间期和R-R间期固定
③
心房率＞心室率
④
心室率快、心房率慢
⑤
P-P间期和R-R间期不固定
【单选题】
关于第三度完全性房室传导阻滞的心电图特征叙述有误的是
①
心房与心室激动无关，P与QRS波无关
②
P，QRS波各有节律，心房率＜心室率
③
心室率常在30~50次/分
④
QRS形态取决于其起搏节律点的位置，若在束枝分叉以上则QRS与正常相同，心室率在40次／分以上
⑤
若在分叉以下则QRS波宽大畸形，心室率40次／分以下且不稳定
【单选题】
关于房室传导阻滞分类说法有误的是
①
第一度房室阻滞是指从心房到心室的电传递速度减慢，心电图表现为P-R间期超过0.2秒，但是每个心房冲动都能传导至心室
②
房室传导阻滞是指心脏的电活动在房室传导过程中受到阻滞
③
第二度房室阻滞又分为I型（文氏或称莫氏I型）和II型（莫氏II型）
④
第二度II型房室传导阻滞是最常见的第二度房室阻滞类型，是指从心房到心室的传导时间逐渐延长，直到有一个心房的冲动不能传递到心室
⑤
第三度房室阻滞又称完全性房室传导阻滞，是指全部的心房冲动都不能传导至心室，其特征为心房与心室的活动各自独立、互不相干；且心房率快于心室率
【单选题】
13.周某,男，72岁。发作性晕厥3次住院。心电图:三度房室传导阻滞，心室率40次/分。首选治疗是
①
临时心脏起搏
②
肾上腺素
③
利多卡因
④
胺碘酮
⑤
CPR
【单选题】
患者心电图显示：P-R间期逐渐延长，R-R间期逐渐缩短，直到P波后QRS波群脱落，QRS波群形态正常，长的P-P间期短于两个短P-P间期之和，诊断为
①
一度房室传导阻滞
②
二度I型房室传导阻滞
③
二度Ⅱ型房室传导阻滞
④
高度房室传导阻滞
⑤
室内传导阻滞
随机题目
【单选题】
A: We are going to have a housewarming party tonight. Would you like to join us? B: [填空].
①
I have no idea.
②
Im afraid not, because I have to visit my parents
③
No, I cant.
④
Thats all set
【单选题】
A: Excuse me, [填空]？ B: Certainly, Walk three blocks along this street, and then turn left. Walk another block, and youll find the cinema across the street. You cant miss it.
①
but will you please tell me where you live
②
but can you help me with the bag
③
but would you tell me how to find the cinema
④
but can you tell me the way to the cinema
【单选题】
A: Please help yourself to the fish. B: [填空].
①
No, I cant
②
Thanks, but I dont like fish
③
Sorry, I cant help
④
Well, fish dont suit for
【单选题】
A: Congratulations！You won the first prize in the English speech contest. B: [填空].
①
Yes, I beat the others
②
Thank you
③
No, no, I didnt do it well
④
Its a pleasure
【单选题】
A: Hows everything with you? B: [填空], and how are you?
①
Thanks
②
Dont mention it
③
Not too bad
④
Pretty fast
【单选题】
A: Will you be free tomorrow evening? B: [填空]
①
No，Ill be busy.
②
What is the matter?
③
Im sorry I wont be free then.
④
No，Ill have no time.
【单选题】
A: Have you ever been to Huangshan? B:[填空].
①
No. Twice
②
I went there twice
③
Yes. Twice
④
Yes. Ill go there next month
【单选题】
A: Is there a bank near here? B: [填空].
①
Its very far
②
Its here
③
Yes, there is a big one
④
Its very crowded
【单选题】
A: David injured his leg playing football yesterday. B: Really? [填空]
①
Who did that?
②
hats wrong with him
③
How did that happen
④
Why was he so careless?
【单选题】
A: How are you doing？B: [填空].
①
Good night
②
Not so bad. And you?
③
I m pleased.
④
How do you do?