组织多普勒成像评价DDD型右室心尖部起搏的左室收缩同步性和收缩功能的关系  

Effects of Right Ventricular Apex Pacing on Left Ventricular Systolic Synchrony and Function Evaluated by Tissue Doppler Imaging

作　　者：马春燕[1] 任卫东[1] 唐力[1] 陈昕[1] 富维强[1] 张立敏[1] 李楠[1] 

机构地区：[1]中国医科大学附属第一医院心血管检查中心,沈阳市110001

出　　处：《中国超声医学杂志》2008年第7期614-616,共3页Chinese Journal of Ultrasound in Medicine

摘　　要：目的采用组织多普勒成像(TDI)检测右室心尖部起搏(RVAP)对于左室同步性和收缩功能的影响,并探讨两者的关系。方法57例因病窦综合症(SSS)行RVAP治疗患者,在术前及术后(17±6)个月采用TDI检测左室12节段收缩期达峰时间的标准差(Ts-SD)作为同步化参数,并测量左室收缩功能。结果根据术后TDI结果,分为同步组(36例)和不同步组(21例)。同步组左室收缩末容积小于不同步组,射血分数则大于不同步组。且Ts-SD和射血分数显著负相关。结论长期RVAP可导致左室收缩不同步和收缩功能减低,且前者是后者的主要原因。TDI技术可以准确评价左室收缩同步性。Objective To evaluate the effects of right ventricular apex pacing （RVAP） on left ventricular （LV） systolic synchrony and function using tissue Doppler imaging （TDI） . Methods Implantation of a pacemaker were performed in 57 patients with sick sinus syndrome, and LV systolic synchrony and function were assessed at baseline and follow-up period by TDI and two-dimensional echocardiography. Results Twenty-one patients developed LV systolic dyssynchrony and impaired LV systolic function after long-term RVAP. In contrast, patients without LV dyssynchrony had no significant changes of LV systolic function. There was a negative correlation between LV dyssynchrony and ejection fraction. Conclusions Long-term RVAP may induce LV dyssynchrony,which was associated with impaired LV systolic function. TDI is useful for accurate evaluation of LV synchrony.

关 键 词：组织多普勒成像 右室心尖部起搏 左室收缩同步性 左室收缩功能 

分 类 号：R540.45[医药卫生—心血管疾病]