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[目的]探讨心室间隔部起搏QRS波时限变化。[方法]选择2002年6月～2009年6月在我院心内科植入起搏器患者44例,按起搏部位不同分为RVA组和RVS组各22例。比较两组起搏前后心电图QRS波时限变化。[结果]两组起搏后QRS波时限均明显延长,差异有统计学意义(P﹤0.05);RVS组起搏后QRS波时限明显短于RVA组,差异有统计学意义(P﹤0.05)。[结论]相比右心室心尖部(RVA)起搏,心室间隔部起搏(RVS)起搏QRS波时限明显缩短,更符合正常生理状态,方法简便、安全、可行。探寻符合生理学的理想起搏部位和方式,减少和避免RVA起搏,促进心室激动的同步化必将成为未来生理性起搏发展的重要方向。
[Objective] To investigate the change of QRS wave duration in patients with ventricular septal pacing. [Methods] Forty-four patients with pacemaker implanted in our hospital from June 2002 to June 2009 were selected and divided into two groups according to their pacing sites: 22 cases in RVA group and RVS group. ECG before and after pacing QRS wave changes in the time limit. [Result] The QRS wave duration of both groups was significantly prolonged after pacing, the difference was statistically significant (P <0.05). The RVS group had shorter QRS duration after pacing compared with RVA group (P <0.05) . [Conclusion] Compared with right ventricular apex (RVA) pacing, the QRS duration of RVS pacing is significantly shortened and more in line with normal physiological conditions. The method is simple, safe and feasible. To explore the physiological pacing and location of the ideal line to reduce and avoid RVA pacing and promote synchronization of ventricular activation will become the future development of physiological pacing an important direction.