题目内容
三度房室传导阻滞时,可出现的心电图改变是
2021-11-23
A.P-P不等,P-R一致
B.P-P不等,P-R渐长
C.无P波,代之以“F”波,R-R不等
D.无P波,代之以“F”波,F与R成比例
E.P-P相等,R-R相等,P-R不等
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