Three-Dimensional echocardiography( 3-DE )was used to elvaluate the left ventricle cardiac function and left ventricular wall motion during the three different pacing moulds(VVI,DVI,AAI)in 8 patients implanted DDD pacemaker.

• 应用三维超声心动图（3－DE）测定8例植入双腔起搏器病人心室功能参数，观察按需型起搏（VVI）、房室顺序型起搏（DVI）、心房按需型起搏（AAI）三种不同起搏方式对左心功能及左室壁活动的影响。