超声组织同步成像技术评价右束支传导阻滞老年患者心室同步性的研究  

Evaluation of ventricular systolic and diastolic synchronicity in elderly patients with complete right bundle branch block by Doppler tissue velocity imaging

作　　者：郑成环[1] 王林[1] 

机构地区：[1]天津医科大学第二医院心脏内科,300211

出　　处：《中华老年医学杂志》2009年第10期820-823,共4页Chinese Journal of Geriatrics

摘　　要：目的应用多普勒组织速度成像（TVI）技术评价老年冠心病右束支传导阻滞患者心室的舒张和收缩的同步性。方法选择冠心病完全性右束支阻滞（CRBBB）老年患者35例及健康人31例（对照组）进行心肌组织同步显像研究，测量收缩期和舒张早期左、右心室基底段和中间段共14节段达到峰值时间（Ts和Te），并计算右心室2节段收缩达到峰值时间平均值（Ts-2-RV）及左心室12节段收缩及舒张达到峰值时间平均值（Ts-12-LV和Te-12-LV）、左心室12节段达到峰值时间的标准差（Ts-12-SD和Te-12-SD）和最大差值（Ts-diff和Te-diff）。测量左心室收缩和舒张末内径和容积。结果（1）CRBBB组左、右心室14节段收缩期达到峰值时间较对照组延长（P〈0．05或P〈0．01），Ts-12-LV、Ts-12-SD、Ts-diff均长于对照组（P〈0．01），CRBBB组中Ts-2-RV较Ts-12-LV延长，分别为（226．3±37．4）ms和（195．5±69．5）ms，差异有统计学意义（P〈0．05）；（2）CRBBB组左、右心室14节段舒张早期达到峰值时间与对照组差异无统计学意义，左心室Te-12-SD、Te-diff长于对照组（P〈0．01）。结论CRBBB患者心室收缩达到峰值时间延长，以右心室显著，收缩和舒张同步性较健康人差。Objective To evaluate the ventricular systolic and diastolic synchronicity in elderly patients with the complete right bundle branch block （CRBBB） by Doppler tissue velocity imaging （TVI） technology. Methods The 35 elderly CRBBB patients were selected as CRBBB group, while 31 healthy people were chosen as control group to evaluate myocardial function. The time to peak velocity at systolic and early diastolic phase （Ts and Te） in the base and interlude 14 segments of left and right ventricles was measured. The average time of Ts in right ventricular 2 segments（Ts-2-RV）, Ts and Te in left ventricular 12 segments （Ts 12-LV and Te-12-LV）, and the standard deviation in left ventrieular 12 segments （Ts-12- SD and Te-12-SD）, the maximum Ts and Te difference （Ts-diff and Te-diff） were calculated. The left ventricular end systolic and end diastolic diameter （LVEDs and LVEDd） and volume （LVEVs and LVEVd） were measured. Results （1）The time to peak velocity at systolic phase in 14 segments of left and right ventricles was longer in CRBBB group than that in control group（P〈0.05 orP〈0.01）. Compared with the control group, theTs 12-LV,Ts 12 SDand Ts diff showed significant prolongation （P 〈 0.01） . The Ts-2-RV was longer than Ts-12-LV in CRBBB group[（226.3± 37.4） ms vs. （195.5 ±69.5） ms, P〈0. 05]. （2） There was no significant difference in the time to peak velocity at early diastolic phase in 14 segments between CRBBB group and control group（P〉0. 05）, but the Te -12 -SD and Te diff was longer in CRBBB group than that in control group （P〈0.01）. （3）The LVEDs and LVEDd were obviously increased in CRBBB group compared with controls （P〈0.05 and P〈0.01）, but no significant difference was showed in LVEVs and LVEVd（P〉0.05）. Conclusions Compared with normal people, the Ts at systolic phase is longer, especially in the right ventricle, the LVEDs and LVEDd are significantly increased, and the ventricular systolic and diastolic synchronicity

关 键 词：超声检查 束支传导阻滞 冠状动脉疾病 

分 类 号：R686[医药卫生—骨科学]