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目的:比较最小化心室起搏中心室起搏管理(MVP)与房室间期自动搜索[Search AV(+)]功能对右室起搏比例(VP%)及左室射血分数(LVEF)的影响。方法:50例症状性窦缓、病态窦房结综合征、间歇性房室传导阻滞的患者,均安装双腔起搏器,分为MVP组和Search AV(+)组,程控MVP组关闭Search AV(+)功能,开启MVP功能;Search AV(+)组开启Search AV(+)功能。于术后随访,比较其6个月的心房起搏、心室起搏比例、高频心房事件次数,及LVEF的值。结果:50例患者完成随访,MVP组比Search AV(+)组的心室起搏比例、高频心房事件次数都显著降低,分别为(11.4±8.3)%,(36.7±7.4)%和(32±10)次,(86±16)次;6个月的LVEF值较术前有显著差异,两组心房起搏比例、12个月的LVEF值差异无统计学意义。结论:MVP功能与SearchAV(+)功能相比可更加减少不必要的右心室起搏,减少高频心房事件。
PURPOSE: To compare the effects of VPP and Search AV (+) on ventricular pacing (VP%) and left ventricular ejection fraction (LVEF) Impact. Methods: Fifty patients with symptomatic sinus bradycardia, sick sinus syndrome, and intermittent atrioventricular block were enrolled in a double-chamber pacemaker. They were divided into MVP group and Search AV (+) group, and program-controlled MVP group Search AV (+) function, open the MVP function; Search AV (+) group to open the Search AV (+) function. The postoperative follow-up, compared to 6 months of atrial pacing, ventricular pacing rate, frequency of atrial fibrillation, and LVEF values. Results: Fifty patients were followed up. The ventricular pacing rate and the number of high-frequency atrial events in MVP group were significantly lower than those in Search AV (+) group (11.4 ± 8.3%, 36.7 ± 7.4%, and ± 10) times, and (86 ± 16) times. The LVEF values at 6 months were significantly different from those before operation. There was no significant difference in the atrial pacing rate and LVEF at 12 months between the two groups. Conclusion: Compared with SearchAV (+), MVP function can reduce unnecessary right ventricular pacing and reduce high-frequency atrial events.