该患者心电图上出现PR间期为0.30s时提示-X题卡

0．11～0．20s 0．12～0．20s 0．10～0．20s 0．12～0．22s 0．13～0．23s

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

心房激动从房室结快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室结下传时发生干扰间歇性一度房室传导阻滞

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

0.11～0.20s 0.12～0.20s 0.10～0.20s 0.12～0.22s 0.13～0.23s

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

PR 段； P－ R 间期； Q－ T 间期； S－ T 段

0.11～0.20s 0.12～0.20s 0.10～0.20s 0.12～0.22s 0.13～0.23s

T波低平 Q-T间期延长 PR间期缩短 QRS间期缩短 QRS波增宽

PR 间期缩短 QT 间期延长出现 U 波 S—T 段降低 T 波高尖

心房激动从房室结快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室结下传时发生干扰间歇性一度房室传导阻滞

心房激动从房室结快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室结下传时发生干扰间歇性一度房室传导阻滞

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

心房激动从房室结快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室结下传时发生干扰间歇性一度房室传导阻滞

心房激动从房室结快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室结下传时发生干扰间歇性一度房室传导阻滞

激动从房室结逆传至心房心房激动从房室结的快径路下传至心室心房激动从房室结的慢径路下传至心室心房激动从房室旁路下传至心室激动从房室旁路逆传至心房

PR间期 QT间期 ST段 RR间期 QRS波群

心房激动从房室结的快径路下传至心室心房激动从房室旁路下传至心室心房激动从房室结的慢径路下传至心室激动从房室结逆传至心房激动从房室旁路逆传至心房

心房激动从房室结下传时发生干扰心房激动从房室结快径路下传至心室心房激动从房室结慢径路下传至心室心房激动从房室旁路下传至心室间歇性一度房室传导阻滞

该患者心电图上出现PR间期为0.30s时，提示