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心电图学习笔记:心电图小知识 PP间期长短交替二联律,考虑什么?

  • 2026-05-12 18:03:29
心电图学习笔记:心电图小知识 PP间期长短交替二联律,考虑什么?
日常审图中，遇到一例特殊心电图：患者因三度房室传导阻滞植入双腔起搏器，呈VAT工作方式，窦性P波形态无明显异常，但PP间期呈现规律的长短交替，心室起搏感知心房同步呈现长短交替二联律。针对这张图，有老师们考虑是窦性节律分离，传统上说的窦性心律不齐，也有老师说窦性节律分离，传统上说的窦性早搏？借此平台想听听其他老师们的见解？实战图谱如下：
自己也翻阅了并整理了一下资料：结论：窦性节律分离≠窦性早搏
鉴别要点
窦性节律分离
窦性早搏
发生机制
窦房结双起搏点节律竞争
窦房结内兴奋灶提前异位激动
P波特点
P波均为窦性，无提前畸形
提前出现的P波，形态与窦性P波基本一致
PP间期
规律长短交替
存在突然缩短的提前PP间期
代偿间歇
无代偿间歇
等周期代偿
本质属性
窦房结内部节律紊乱
窦性起源的真性早搏
总结：所以以上这份心电图到底诊断什么呢？窦性早搏二联律？窦性节律分离？欢迎各位老师留言！
申明：该案例是自己工作中碰到对诊断有疑问的心电图，整理并分享供个人学习、参考用，也欢迎各位老师提供宝贵的意见！有错误请指正！
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  1. CONNECT:[ UseTime:0.000506s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000569s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.013609s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000359s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000614s ]
  6. SELECT * FROM `set` [ RunTime:0.004433s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000678s ]
  8. SELECT * FROM `article` WHERE `id` = 488156 LIMIT 1 [ RunTime:0.000422s ]
  9. UPDATE `article` SET `lasttime` = 1778584517 WHERE `id` = 488156 [ RunTime:0.018581s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000339s ]
  11. SELECT * FROM `article` WHERE `id` < 488156 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.004643s ]
  12. SELECT * FROM `article` WHERE `id` > 488156 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000531s ]
  13. SELECT * FROM `article` WHERE `id` < 488156 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002944s ]
  14. SELECT * FROM `article` WHERE `id` < 488156 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000762s ]
  15. SELECT * FROM `article` WHERE `id` < 488156 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000979s ]
0.155851s