组织多普勒Tei指数和二维斑点追踪技术评价双腔起搏器患者左心功能  

Evaluation on the left ventricular function in patients with dual-chamber pacemaker using tissue doppler Tei index and speckle tracking imaging

作　　者：刘丽[1] 夏稻子[1] 朱宁[2] 宣健媛[1] 杨冰冰[1] 李阳[1] 孙明亮[1] 邓玉姣[1] 

机构地区：[1]大连医科大学附属第二医院超声科 [2]大连医科大学附属第二医院心血管内科,辽宁省116027

出　　处：《中华临床医师杂志（电子版）》2013年第4期91-93,共3页Chinese Journal of Clinicians(Electronic Edition)

摘　　要：目的应用组织多普勒Tei指数和二维斑点追踪技术,评价双腔起搏器患者左心室扭转、解旋运动、心功能。方法 40例安装起搏器患者于术前及术后分别采集心尖四腔二尖瓣环组织多普勒频谱,左心室短轴心底水平及心尖水平二维图像,进入STI系统测量计算左心室Tei指数、峰值旋转角度、峰值扭转角度、等容舒张解旋率,并统计分析。结果术后Tei指数下降(0.44±0.06vs.0.62±0.11),差异有统计学意义(P<0.05),左心室收缩期峰值扭转角度(15.80°±5.58°vs.10.08°±5.67°,P<0.05)、等容舒张解旋率升高(0.44±0.04vs.0.24±0.03,P<0.05)。心底水平侧壁,心尖水平前室间隔、侧壁、后壁、后室间隔左心室局部旋转运动较术前增强(P<0.05)。结论双腔起搏器改善了患者左心室收缩及舒张功能,二维斑点追踪技术可以较敏感地评价心功能。Objective To discuss left ventricular （LV）twist and untwist in patients with dual-chamber pacemaker, tissue doppler Tei index and speckle tracking imaging（STI） were used and the cardiac function was evaluated. Methods Two dimensional images of the apical four chamber view, the short axis view of in the basal level and apex level of LV were obtained in 40 cases before and after the pacemaker implantation, so were the mitral annular tissue doppler spectrum, then we entered the STI system to record the parameters such as Tel index, peak rotation,peak twist,untwist rate, and to made statistical analysis. Results The Tei index （0.44 ± 0. 06 vs. O. 62 ±0. 11 ）was decreased, bur the peak twist （ 15.80 °±5.58° vs. 10.08°±5.67°）, untwist rate （0. 44 ± 0. 04 vs. 0. 24 ± 0. 03 ） were increased after the operation（ P 〈 0. 05 ）. The LV regional rotation in the lateral wall of basal level and the anterior sept um, the lateral wall, the posterior wall, the posterior septum of the apical level enhanced （ P 〈 0. 05 ）. Conclusions The method of dual-chamber pacemaker implanting can improve the patient＇s LV systolic and diastolic function. The STI can evaluate the cardiac function sensitively.

关 键 词：心脏起搏器 人工 心室功能 左 二维斑点追踪显像 扭转 解旋率 

分 类 号：R445.1[医药卫生—影像医学与核医学]