彭珍云,向力群,曾向辉,张良,钟常青,刘振芳,张翼

• 1:湖南师范大学第一附属医院心内科

摘要(Abstract)：

目的探讨右心室心尖部与间隔部起搏对长期起搏依赖患者心功能的远期影响。方法入选在湖南师范大学第一附属医院就诊并行双腔起搏器植入术的Ⅲ度房室传导阻滞108例,据心室电极固定部位分为间隔部起搏组(RVS组,57例)及心尖部起搏组(RVA组,51例);比较两组患者术前与术后3年血清氨基末端脑钠肽前体(NT-proBNP)浓度及左心室射血分数(LVEF)、左心室舒张末期内径(LVEDD)变化、左心房大小(LA)及心电图Ⅱ导联QRS波时程变化。对NT-proBNP水平与LA及QRS波时程进行直线相关分析。结果术前NT-proBNP浓度、QRS波时程及LA大小两组间差异无统计学意义(P>0.05)。术后两组患者NT-proBNP浓度、QRS波时程及LA大小均较术前明显增大,差异有统计学意义(P<0.05),但心尖部起搏组各观察指标值上升幅度较大。RVA组与RVS组比较显示,NT-proBNP浓度升高更明显[(367.4±38.5)pg/ml比(210.4±36.7)pg/ml,P<0.05];QRS波时程延长[(0.192±0.042)s比(0.151±0.091)s,P<0.05];LA明显扩大[(32.9±4.1)mm比(28.9±4.2)mm,P<0.05]。组内及组间比较,LVEF及LVEDD差异均无统计学意义。双变量直线相关分析显示,NT-proBNP与QRS波时程呈直线正相关(r=0.701);与LA大小呈直线正相关(r=0.671)。结论心尖部起搏易引起心室收缩失同步及左心房不良重构,间隔部起搏更接近生理性起搏,是相对理想的起搏部位。

关键词(KeyWords)： 房室传导阻滞;心脏起搏,人工;心室功能;心房功能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 彭珍云,向力群,曾向辉,张良,钟常青,刘振芳,张翼

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