羊膜动物
不完全性右束支传导阻滞的心电图改变是() ["QRS波群时间在0.09~0.11s之间","QRS>O.12s","Vl呈rSR,图型","V1、V2呈QS型","室上性起搏点"]
脊椎动物
心房扑动的心电图诊断包括() ["P波消失,f波代替","P波消失,F波代替,频率250~350次/min,若频率>300次/min,称不纯性心房扑动","QRS波群呈室上性,房室传导比例2:1~4:1或5:1以上,2:1为常见,1:1为罕见","频率250~350次/min","必律绝对整齐"]
Ⅱ度I型窦房传导阻滞的心电图表现是() ["P—P间距逐渐缩短至脱漏","间歇后的P—P间距大于间歇前的P—P间距","间歇后的P—P时间小于两个短的P—P间距","P—P间距逐次延长至脱漏","间歇后的P—P时间大于两个短的P—P间距"]
头索动物