背景:心动过速是临床上常见的心律失常,其发病机制大多与折返有关。然而,还有一些心动过速与折返无关。积极阐明这些非折返性心动过速的发病机制对其治疗具有重要意义。
方法:10年前,一名55岁女性患者出现反复心悸,心率最快180次/分钟。
方法:双房室结非折返性心动过速(DAVNNT)。
方法:DAVNNT可通过房室结慢路修改的射频消融来治愈。
结果:心动过速已经停止。
结论:DAVNNT在临床实践中是一种罕见的疾病。它的特征不是与折返相关的心律失常,而是由房室结道和后续通路的双通路传导引起的心率增加现象。电生理检查有助于明确诊断和发病机制,导管消融可以治愈这种疾病。
BACKGROUND: Tachycardia is a common arrhythmia in clinical practice, and its pathogenesis is mostly related to reentry. However, there are also a few tachycardia that are not related to reentry. Actively clarifying the pathogenesis of these non-reentry related tachycardia is of great significance for its treatment.
METHODS: A 55-year-old female patient presented with recurrent palpitations with a fastest heart rate of 180 beats/minute 10 years ago.
METHODS: Dual atrioventricular nodal non-reentrant tachycardia (DAVNNT).
METHODS: DAVNNT can be cured by radiofrequency ablation of atrioventricular nodal slow path modification.
RESULTS: The tachycardia has stopped.
CONCLUSIONS: DAVNNT is a rare disease in clinical practice. Its characteristic is not reentration-related arrhythmias, but the phenomenon of increased heart rate caused by electrical conduction down the double pathway of atrioventricular nodal tract and subsequent pathway. Electrophysiological examination helps to clarify the diagnosis and pathogenesis, and catheter ablation can cure the disease.