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探讨80岁以上高龄老年人植入5种不同类型的永久性心脏起搏器(VVI、VVIR、AAI、VDD、DDD)前后左室射血分数(EF)的变化。临床资料回顾性分析31例80岁以上老年患者植入永久性心脏起搏器前后采用彩色多普勒超声诊断仪,于胸骨旁腱索中段以 M 型超声心动图所测左室射血分数。31例患者中男
To investigate the changes of left ventricular ejection fraction (EF) before and after implantation of five different types of permanent pacemakers (VVI, VVIR, AAI, VDD, DDD) in the elderly over 80 years of age. Clinical data retrospective analysis of 31 cases of elderly patients over the age of 80 before and after implantation of permanent pacemaker with color Doppler ultrasound diagnostic apparatus, in the middle of the parasternal chordae tendinus by M-mode echocardiography measured left ventricular ejection fraction. 31 patients in the male