题目内容
符合房性期前收缩心电图表现的是
2021-11-23
A.P-R＇间期小于0.12s
B.P＇-R间期≥0.12s
C.P＇-R间期≤0.21s
D.R-R间期小于等于0.21s
E.R-P＇间期小于0.20s
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