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目的通过超声心动图评价右心室间隔部起搏的中期血流动力学变化。方法需要安置心脏起搏器患者60例,其中男32例,女28例;年龄在61.8±19.3(28～81)岁。患者为缓慢性心律失常,共使用心室主动电极导线60根,电极导线固定部位为右室流出道间隔部35根,右室流入道间隔部25根。术前、术后7d及出院后1、3、6、12、24月同一起搏频率下用超声心动图测定起搏时的左室射血分数(EF)、短轴缩短率(FS)、每搏输出量(SV)和心输出量(CO)。结果手术顺利完成,未出现严重并发症。右室间隔部起搏术后7d及出院后1、3、6、12、24月EF、FS、SV和CO各参数和术前相比差异无统计学意义(P>0.05)。结论右心室间隔部起搏中期随访对血流动力学无明显不良影响,超声心动图可作为长期随访观察起搏效果的重要手段。
Objective To evaluate the mid-term hemodynamic changes of right ventricular septal pacing by echocardiography. Methods Sixty patients with pacemakers were enrolled, including 32 males and 28 females, with a mean age of 61.8 ± 19.3 (28-81 years). Patients with bradyarrhythmia, a total of 60 active ventricular lead electrode, the electrode lead wire fixed part of the right ventricular outflow tract 35, right ventricular outflow tract 25. Echocardiography was used to measure left ventricular ejection fraction (EF), short axis shortening (FS), and left ventricular ejection fraction (PVEF) at preoperative and postoperative day 7, and at the same pacing frequency at 1, 3, 6, Stroke volume (SV) and cardiac output (CO). Results The operation was completed successfully without serious complications. There were no significant differences in EF, FS, SV and CO parameters between the right ventricular septum 7 days after pacing and 1, 3, 6, 12, 24 months after discharge, compared with those before operation (P> 0.05). Conclusion The mid-term follow-up of right ventricular septal pacing has no significant adverse effect on hemodynamics. Echocardiography can be used as an important means to observe the pacing effect in long-term follow-up.