房扑发生机制 房颤发生机制 ⑴心房扑动 （atrial flutter AFL） 诊断要点 ①P波及等电位线消失，以F波代之； ② F波频率约250-350次/分；房室传导比例为 房室传导比例为2:1 2:1--4:1 4:1。。
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AFL ATRIAL FLUTTER 心房扑动
Objective: Typical atrial flutter (AFL) was treated by posterior isthmus liner radiofrequency catheter ablation (RFCA) technique.
目的：采用右心房后位峡部线性消融治疗典型心房扑动。
AF converted to atypical atrial flutter(AFL) in 4 cases, but failed to terminate by ablation. AF converted to typical AFL in 2 cases, and terminated by tricuspid isthmus ablation.
消融术中房颤转为不典型房扑4例，消融未能终止，转为典型房扑2例，消融三尖瓣峡部均成功。
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