DDDR起搏对心脏功能影响的研究

STUDY ON THE IMPROVEMENT OF HEART FUNCTION AFTER DDDR PACING

目的 :探讨DDDR起搏对心脏功能的影响。方法 :选择 12例缓慢性心律失常患者 ,男 7例 ,女 5例 ,年龄平均 6 9.6± 8.4岁。其中病窦综合征 6例 ,完全房室传导阻滞 5例 ,三分支阻滞 1例 ,NHYA心功能Ⅲ级 10例 ,Ⅳ级 2例 ,全部置入DDDR起博器 ,起博后跟踪随访患者 6个月 ,观察NHYA心功级别变化并进行 6分钟步行测试和超声心动图心功能参数测定。结果 :患者置入DDDR起博器后 (NHYA)心功能进步 1级者 3例 ,进步 2级以上者 9例。步行距离术后 3个月提高 2 2 .6 % (P <0 .0 5 ) ,术后 6个月提高 2 9.6 % ;左室射血分数 (LVEF)、每搏量 (SV)、心输出量 (CO)术后 3个月分别提高 33.6 %、2 0 %、2 5 %。术后 6个月分别提高 4 6 .4 %、19.7%、2 4 .9%。结论 :DDDR起博可以显著改善心功状态 ,提高运动耐量 ,是一种理想的起博方式。

Objective:To assess the improvement of cardic function after DDDR pacing.Method:12 patients with heart failure [male 7,famale5,aged-84(69.6±8.4)year],including 6 cases with sick sinus syndrome,5 cases with third-degree atrioventricular block,1 case with trifasccicular block.The changes of NHYA cardic function,the capacity of 6 minutes hall work and the parameters of echocardiography were evaluated before and after patients implanted DDDR pacemaker for 6 months.Results:It was found that there were obvious improvement in cardic functions,.the capacity of 6 minutes hall walk and the parameters of echocardiography cardic function after pacing.Conclusions:DDDR pacing can significantly improve the cardic function,quality of life and exercise capacity.It is an ideal mode of pacing.