【单选题】【消耗次数：1】
强心苷中毒最早出现的症状是（ ）。
①
眩晕、乏力和视力模糊
②
厌食、恶心和呕吐
③
神经痛
④
色视
⑤
房室传导阻滞
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相关题目
【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】
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
【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】
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
【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】
Digoxin治疗CHF时引起的窦性心动过缓和轻度房室传导阻滞宜选用
①
Atropine
②
Isoprenaline
③
Verapamil
④
lidocaine
⑤
Adrenaline
随机题目
【单选题】
—Why didnt you come to join her party?—I______, but I had to deal with something urgent.
①
would have
②
should
③
would do
④
was going to have
【单选题】
They couldn’t ______ to fly out to see us, and we couldnt either. We were all poor then.
①
offer
②
afford
③
provide
④
supply
【单选题】
Youve got a divorce? Why did he decide to______ you after seven years together?
①
keep company with
②
part company with
③
keep in touch with
④
stay in touch with
【单选题】
—How many poor counties will there be in our province by 2020?—There will be only a few, if _______.
①
much
②
some
③
any
④
many
【单选题】
Henry was very busy yesterday．Otherwise he______ to our my birthday party.
①
would have come
②
came
③
had come
④
will come
【单选题】
Our parents were strict. They requested that we______ television on week nights.
①
have not watched
②
not be watching
③
must not to watch
④
not watch
【单选题】
---Why didn’t John call me ? ---Oh, his cell-phone ran out of power, otherwise he______ you.
①
had called
②
would have called
③
called
④
would call
【单选题】
If you take quality into consideration, you will find our price______.
①
changeable
②
readable
③
comfortable
④
reasonable
【单选题】
Thank you for your time. I’m looking forward to ______.
①
you reply
②
your reply
③
you answer
④
you to answer