Different Pacing Modes On The Impact Of Heart Function

Objective To investigate different pacing modes on the long-term effects of cardiac function. Methods 185 patients with SSS in terms of clinical manifestation, Holter and Esophageal atrial pacing underwent the different pacing. The Left ventricular end-diastolic volume(LVEDV)? Left ventricular end-systolic volume (LVESV) and Left ventricular ejection fraction(LVEF) were measured by the echocardiography before and after implantation of pacemaker and follow-up 1-5 years. Program-controlled observation DDD pacemaker to observe Percentage of right ventricular pacing(VP %) after implantation. Among them,92 cases were implanted with AAI pacemaker, and 93 cases with DDD pacemaker. Result The indexes of structural remodeling and percentage of right ventricular pacing (VP %)were increased(P<0.05), left ventricular ejection fraction(LVEF) significantly decreased(P<0.05)in DDD cases after follow-up 1-5 years. Conclusion DDD pacing is not physiological pacing, which can be long-term in patients with left ventricular function damage.