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《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:

2017年第5期

页码:

579-582

栏目:

临床研究

出版日期:

2017-03-25

文章信息/Info

Title:

Comparison of the left ventricular intracavitary vortex during the isovolumic contraction period between normal and systolic dysfunction by using vector flow mapping

作者:

李巧贞; 马 娜; 黎志国; 王本娜; 宋 进; 曹欣宇; 张海滨

（解放军第210医院特诊科，辽宁 大连 116021）

Author(s):

LI Qiao-zhen;  MA Na;  LI Zhi-guo;  WANG Ben-na;  SONG Jin;  CAO Xin-yu;  ZHANG Hai-bin

（Department of UltraSound, PLA 210th Hospital, Dalian 116021, Liaoning, China）

关键词:

超声心动图; 血流向量图; 涡流; 等容收缩期

Keywords:

echocardiography;  vector flow mapping;  vortex;  isovolumic contraction

分类号:

R541.61

DOI:

-

文献标识码:

A

摘要:

目的 应用血流向量图（vector flow mapping，VFM）比较心力衰竭（心衰）患者与正常人左室等容收缩期血流动力学特点。方法 对照组包括健康志愿者51例，心衰组包括左室射血分数<45%的扩张性心肌病患者57例。心尖左室长轴观记录左室彩色多普勒血流信号，应用VFM测量并比较等容收缩期初始帧和终末帧左室腔内涡流流率与面积。结果 对照组舒张末期左室涡流经过等容收缩期后面积无显著性变化，但流率显著降低（P<0.01）；所有涡流范围均达到左室基底部。而心衰组经过等容收缩期后，涡流面积、流率均显著降低（均P<0.05）；仅有25例（44%）患者涡流范围可达到左室基底部。校正心腔大小的影响后，等容收缩期末左室涡流的面积和流率心衰组均小于对照组（均P<0.01）。结论 经过等容收缩期后，心衰患者左室涡流的大小与流率均显著降低，且低于正常心脏。

Abstract:

AIM To compare the left ventricular (LV) intracavitary vortex during the isovolumic contraction (IVC) period between normals and patients with heart failure by using vector flow mapping (VFM). METHODS Color Doppler flow images were recorded from LV apical long-axis view in 51 healthy volunteers and 57 patients with dilated cardiomyopathy and LV ejection fraction ≤45%. RESULTS In normal subjects, the area of the LV intracavitary vortex formed at the end of diastole was sustained and the flow volume significantly decreased during the IVC period (P<0.01). The vortex reached the basal region of LV chamber in all normal subjects. However, both the area and flow volume of the vortex decreased significantly during the IVC period in the patients (both P<0.05). The vortex reached the basal region of LV chamber only in 25(44%) patients. When corrected for the influence of LV size, both the area and the flow volume of the vortex were significantly smaller in the patients than those in the normal subjects at the end of the IVC period (both P<0.01). CONCLUSION Both the area and flow volume of intracavitary vortex significantly decrease during the IVC period in patients with heart failure and are smaller than those in normals.

参考文献/References

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备注/Memo

备注/Memo:

收稿日期：2016-12-26.
通讯作者：张海滨，主任医师，主要从事超声诊断及介入研究 Email:fmmuzhanghaibin@hotmail.com
作者简介：李巧贞，硕士生 Email:602341441@qq.com

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更新日期/Last Update: 2017-04-20