双腔起搏器自动工作方式转换功能在阵发性房性快速心律失常中的评价

Evaluation of automatic mode switch of dual chamber pacing in paroxysmal atrial tachyarrhythmia

目的 评价双腔起搏器自动工作方式转换功能的可靠性及临床应用效果。方法 6例患者 ,男 5例 ,女 1例 ,平均年龄 78岁。因病窦及房室阻滞植入带有自动工作方式转换功能 (AMS)的双腔起搏器。患者植入起搏器后 3个月进行随访。结果 6例患者中有 4例发生了 6 4次阵发性心房纤颤 ,持续时间 5min～ 3h不等 ,每次心房颤动起搏器均启动了AMS ,2例未发生快速房性心律失常患者未启动AMS。结论 双腔起搏器AMS功能工作可靠 ,对于伴有阵发性房性快速心律失常患者 ,因应用带AMS功能的双腔起搏器。

Objective\ To evaluate the efficacy of automatic mode switch (AMS) from DDD/DDDR to DDIR when episodes of atrial tachyarrhythmia occurs.Methods\ Six patients,5 males,1 female,mean age of 78 years,respectively suffered from Sick Sinus Syndrome,atrialventricular block and with recurrent paroxysmal chamber tachyarrhythmia,were implanted with AMS of dual chamber pacemakers.Results\ Four of these patients had 64 episodes of atrial fibrillation totally during 3 months follow-up survey,Lasting form 5 minutes to 3 hours.Data-stored showed that AMS was activated in all atrial fibrillation episodes,but not in two patients without atrial tachyarrhythmia eposide.Conclusion\ The AMS is a reliable and sensitive algorithm of dual chamber pacemaker and can be recommended as pacing therapy to patients with paroxysmal atrial tachyarrtythmia.