Objective To review the influence of DDD pacing and VVI pacing on long-term survival status through long-term follow-up and observation in patients with implantation of permanent pacemaker. Methods The patients(n=1245) with implantations of permanent pacemakers due to disease of cardiac conduction system were retrospectively analyzed from Jan. 1991 to Dec. 2010, including 915 cases(73.49%) with DDD pacemakers and 330(26.51%) with VVI pacemakers. All patients were followed up after pacemaker implantation, an...