超声心动图评估主动脉瓣人工瓣膜置换术后室间隔运动异常情况

Evaluation of abnormal paradoxical septal movement after aortic valve replacement by echocardiography

目的探讨超声心动图在评估主动脉瓣人工瓣膜置换术后室间隔运动异常中的作用。方法应用超声心动图对58例主动脉瓣重度狭窄患者和16例主动脉瓣重度关闭不全患者进行检查,测量术前及术后1周左室射血分数(LVEF)、室间隔运动幅度、室间隔增厚率(ΔT%)、左室每搏量(LVSV)及每分输出量(LVCO)变化情况。结果主动脉瓣狭窄和主动脉瓣关闭不全患者术后LVSV和LVCO均升高,室间隔运动幅度均减低,与术前比较差异均有统计学意义(均P<0.05);LVEF和ΔT%与术前比较差异均无统计学意义。结论超声心动图能较好地评价主动脉瓣人工瓣膜置换术后室间隔运动异常及其对左室整体收缩功能的影响。

Objective To explore the abnormal paradoxical septal movement after aortic valve replacement by echocardiography.Methods Fifty-eight patients with aortic valve stenosis and 16 patients with aortic valve incomplete closure were enrolled in this study. Using echocardiography to measure changes in left ventricular ejection fraction,paradoxical septal movement,ventricular septal thickening rate,left ventricular stroke volume and per minute output in pre-operative and post-operative week.Results Compared with preoperative patients with aortic valve stenosis and aortic valve incomplete closure,there was no significant difference between LVEF and ΔT%.The increase of LVSV,LVCO and decrease of ventricular septal movement were statistically significant(all P<0.05).Conclusion Echocardiography can be used to evaluate paradoxical septal movement after aortic valve replacement and the effect of paradoxical septal movement on the overall contractile function of left ventricle.