AAISafeR起搏模式的长期随访观察

Long-term follow-up of AAISafeR pacing mode.

目的对置入具有AAISafeR功能的Symphony 2450起搏器的患者进行长期随访观察。方法入选40例患者,分别于置入起搏器后3个月、6个月,以后每年1次进行随访,观察左房内径(LAD)、左室舒张末期内径(LVEDD)及左室射血分数。通过起搏器程控计算心房起搏及感知百分比,心室起搏及感知百分比。同时记录房性心律失常的发生率。结果随访18±4.6(12～24)个月,心室起搏百分比23.5%±3.5%。与术前相比,术后LAD、LVEDD均有缩小(P<0.05)。相关分析显示,LAD、LVEDD与心室起搏百分比呈正相关。术后快速房性心律失常发作例数明显减少。结论AAISafeR起搏模式能够有效减少心室起搏百分比,减少房性心律失常的发生。

Objective To study and compare the long-term results in patients implanted with Symphony 2450. Methods A long-term follow-up survey was carried out in 40 cases by clinical examination , electrocardiography, echocardiography and pacemaker programme. Left atrial diameter （ LAD ） , left ventricular end-diastole diameter （LVEDD） were observed and the cumulative percent ventricular pacing （Cum% VP） during pacemaker programing was calculated. Result The mean follow-up time was 18 ±4.6 （ 12 -24） months. The Cum% VP was 23.5 % ± 3.5%. The LAD and LVEDD statistically decreased after pacemaker implantation compared with that before implantation. Atrial arrhythmia was obviously less during follow-up period. Conclusion The mode of AAISafeR could diminish the Cum% VP and the incidence of atrial arrhythmia efficiently. [ Chinese Journal of Cardiac Pacing and Electrophysiology ,2009,23 （ 5 ） ：405 - 407 ]