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[目的]比较右室间隔部(RVS)及右室心尖部(RVA)起搏对心功能和血流动力学的影响。[方法]52例缓慢性心律失常患者,具有起搏器植入指征。随机分为右室间隔部起搏组及右室心尖部起搏组。分别于术前、术后行心电图、超声心动图检查,观察QRS波时限(QRSd)、左心室射血分数(LVEF)、左室舒张末期内径(LVEDD)、每搏量(SV)。[结果]RVS起搏与RVA起搏比较,QRSd增宽程度小,LVEF以及SV降低程度小(P﹤0.05)。[结论]右室间隔部起搏比右室心尖部起搏对心功能和血流动力学的不利影响较小,更接近于生理性起搏。
[Objective] To compare the effects of right ventricular septal (RVS) and right ventricular apical (RVA) pacing on cardiac function and hemodynamics. [Methods] Fifty-two patients with bradyarrhythmia had indications for pacemaker implantation. Randomly divided into right ventricular septal pacing group and right ventricular apical pacing group. Electrocardiogram and echocardiography were performed before and after operation. The QRS duration, left ventricular ejection fraction, left ventricular end diastolic diameter and stroke volume (SV) were observed. [Results] Compared with RVA pacing, RVS pacing had less QRSd broadening and less LVEF and SV reduction (P <0.05). [Conclusions] Right ventricular septal pacing has less adverse effect on cardiac function and hemodynamics than right ventricle apical pacing, which is closer to physiological pacing.