| 马春燕,刘爽,任卫东,于波,唐力,陈昕,张立敏,李楠,王晓冰.实时三维超声心动图评价右心室心尖部起搏对左心室收缩同步性的早期影响[J].中国医学影像技术,2009,25(3):412~414 |
| 实时三维超声心动图评价右心室心尖部起搏对左心室收缩同步性的早期影响 |
| Real-time three-dimensional echocardiography observation of effects of short-term right ventricular apex pacing on left ventricular systolic synchrony |
| 投稿时间：2008-10-17 修订日期：2008-12-08 |
| DOI： |
| 中文关键词: 超声心动描记术,三维 右心室心尖部起搏 心室功能,左 |
| 英文关键词:Echocardiography, three-dimensional Right ventricular apex pacing Ventricular function, left |
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| 中文摘要: |
| 目的 评价右心室心尖部起搏(RVAP)对左心室收缩同步性的早期影响。 方法 53例起搏器植入(均为RVAP)的患者和30位正常人,在术前及术后1个月采用实时三维超声心动图(RT3DE)检测左心室16个心肌节段达收缩末最小容积时间的差值(Tmsv 16-Dif) 和标准差(Tmsv 16-SD)作为同步性参数,同时测量左心室射血分数(LVEF)。 结果 术后Tmsv 16-Dif和Tmsv 16-SD 显著延长(P＜0.001),20.75%~22.64%患者出现左心室收缩不同步,而LVEF呈减低趋势(P＞0.05)。Tmsv 16-Dif和Tmsv 16-SD与LVEF负相关(r=-0.40和r=-0.52)。 结论 RVAP早期即可导致左心室收缩不同步,且其可能是收缩功能减低的主要原因。RT3DE可准确评价左心室收缩同步性。 |
| 英文摘要: |
| Objective To evaluate the effects of short-term right ventricular apex pacing (RVAP) on left ventricular (LV) systolic synchrony using real-time three-dimensional echocardiography (RT3DE). Methods Implantation of a pacemaker with right ventricle lead positioned in the apex was performed in 53 patients with sick sinus syndrome (SSS). LV systolic synchrony and systolic function were assessed at baseline and one month after the operation by RT3DE. Results LV systolic dyssynchrony was detected in 20.75%－22.64% patients after short-term RVAP, while LV systolic function did not changed obviously, though a tendency of impairment was observed. There was a negative correlation between LV systolic synchrony and ejection fraction. Conclusion Short-term RVAP can induce LV dyssynchrony, which is associated with impaired LV systolic function. RT3DE is a reliable technique for accurate evaluation of LV synchrony. |
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