摘要
目的应用实时三维超声心动图（RT～3DE）分析并评价QRS时限对心力衰竭（心衰）患者左心室收缩同步性的影响。方法选取34例左室射血分数（LVEF）≤35％的心衰患者，其中QRS时限正常者（A组）20例，QRS延长者（B组）14例，分别行二维及三维超声心动图检查，获取二维LVEF、左室舒张末内径（LVIDd），三维所测收缩末容积（LVESV）及舒张末容积（LVEDV）、LVEF及校正的16节段不同步指数（Tmsv16-sd／RR），各组间结果进行分析对比。结果A组二维参数LVIDd、LVEF与B组相比差异无统计学意义（P〉0．05），三维参数中LVESV、LVEDV、LVEF及Tmsv16-sd／RR，B组略高于A组，但差异亦无统计学意义（P〉0．05）。结论实时三维超声心动图可定量评价整体左室收缩的同步性，QRS时限的长短对左室各节段机械收缩的同步性并无显著影响。
Objective To assess the effects of QRS duration on left ventricular systolic synehronieity in patients with heart failure by real time three dimensional eehocardiography （RT-3DE）. Methods Thirty-four patients with heart failure （LVEF≤35%） were selected and divided into two groups. Group A consisted of 21） patients with normal QRS duration, and group B included 14 patients with long QRS duration. All the patients underwent two-dimensional echocardiography （2DE） and RT-3DE respectively. Parameters including left ventricular inlernal diameter（LVIDd）,left ventricular ejection fraction（LVEF） of 2DE, and left ventricular end systolic volume（LVESV）, left ventricular end diastolic volume（LVEDV）, LVEF, the time to minimal systolic volume of 16 segmental standard deviation as a ratio of R R interval（Tmsv16-sd/RR） of RT 3DE were obtained and analyzed between the two groups. Results There were no significant differences of LVIDd, LVEF acquired by 2DE between the two groups（ P 〉0.05）;LVESV,LVEDV,Tmsv16 sd/RR of RT-3DE were slightly higher in group B than those in group A, but didn＇t reach the significant difference between the two groups （ P 〉0.05）. The mechanical dyssynchrony maybe related to the severity of heart failure. Conclusions RT-3DE can quantify global left ventrieular systolic synchronicity. QRS duration has no significant effect on left ventricular systolic synchronicity in patients with heart failure.
出处
《中华超声影像学杂志》
CSCD
北大核心
2009年第1期8-10,共3页
Chinese Journal of Ultrasonography
关键词
超声心动描记术
实时三维
心力衰竭
充血性
心室功能
左
Eehocardiography,reabtime three dirnentional
Heart failure,congestive
Ventricular function, left
