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双腔起搏器最小化心室起搏功能的自身对照研究

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摘要 目的对植入具有最小化心室起搏功能的两种设计运行(MVP和Search AV+)方法的Adapta起搏器患者进行随访观察,比较两种起搏模式在减少心室起搏、房性心律失常发生率及影响心脏重塑方面的差异。方法入选46例病态窦房结综合征患者,采用随机、单盲、自身前后交叉对照原则,观察同一患者在不同起搏模式下,通过起搏器程控计算心房起搏百分比,心室起搏百分比,及心房高频事件,同时观察左房内径、左室舒张末期内径及左室射血分数。结果不同起搏模式分别观察3个月后,双腔起搏器+MVP较Search AV+更多降低心室起搏百分比(0.54%±0.10%比2.80%±0.16%),心房高频事件发生减少(2.00±0.84比3.06±0.88)。与术前比较,MVP及Search AV+模式均可使左房内径缩小(3.61±0.49比3.50±0.44;3.61±0.49比3.51±0.45),而左室舒张末期内径及左室射血分数无明显变化。相关分析显示,左房内径与心室起搏百分比呈正相关。结论与Search AV+模式相比,MVP起搏模式能更有效减少心室起搏百分比,减少房性心律失常的发生;心室起搏百分比短期内(3个月)可影响心脏结构重塑,但未引起心室功能改变。
作者 彭晖 马文英
出处 《中国医刊》 CAS 2012年第8期40-43,共4页 Chinese Journal of Medicine
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