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右心室起搏136例QRS波群分析

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摘要 由于右心室电极植于右室心尖部到位容易,固定简单,脱位率低,因此右心室心尖部起搏及选用被动固定电极电极一直被认为是最适合及经典的起搏部位及电极。随着临床试验结果发表,人们逐步认识到长期右室心尖部起搏可导致心室收缩功能失调、心力衰竭,增加房颤发生率及死亡风险。其依据是,右室心尖部起搏导致非生理性心室激动:从心尖到基底部,从右室到左室。这样导致心室激动时间延长,QRS波群增宽,心室激动收缩不同步,血流动力学恶化。
作者 蒋先文
出处 《云南医药》 CAS 2015年第2期202-203,共2页 Medicine and Pharmacy of Yunnan
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