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|本期目录/Table of Contents|

组织多普勒成像技术观察心肌节段性早期松弛现象(PDF)

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:
2011年第3期
页码:
368-371
栏目:
临床研究
出版日期:
2011-05-12

文章信息/Info

Title:
Study on segmental early relaxation phenomenon by tissue Doppler imaging
作者:
黎志国; 张海滨; 刘成国; 侯锐; 朱苏阳
解放军210医院特诊科，辽宁 大连 116021
Author(s):
LI Zhi-guo;  ZHANG Hai-bin;  LIU Cheng-guo;  HOU Rui;  ZHU Su-yang
Department of Ultrasonic Diagnostics, PLA 210 Hospital, Dalian 116021, Liaoning, China
关键词:
超声心动描记术; 组织多普勒成像; 节段性早期松弛现象; 收缩期后缩短
Keywords:
echocardiography;  tissue Doppler imaging;  segmental early relaxation phenomenon;  postsystolic shortening
分类号:
R541.4;R445.1
DOI:
-
文献标识码:
A
摘要:
目的:应用组织多普勒成像（TDI）技术研究节段性早期松弛现象（segmental early relaxation phenomenon，SERP）。方法： 103例冠心病患者和50例健康志愿者，根据舒张早期心肌TDI速度曲线将左室各节段分为SERP、收缩期后缩短（PSS）和正常3种舒张方式，分析舒张方式与冠脉狭窄之间的关系。结果： SERP和PSS易出现于冠脉狭窄的节段（OR=4.39和5.59，均P<0.01）；但对每一个患者而言，SERP更易出现于冠脉相对狭窄程度最轻的节段（OR=12.53，P<0.01），而PSS不易出现于冠脉相对狭窄程度最轻和中等的节段（OR=0.33和0.41，均P<0.01）。结论： 在冠心病患者中舒张早期心肌峰值速度可出现于等容舒张期，这种现象易出现于缺血程度相对较轻的节段。
Abstract:
AIM:To study the segmental early relaxation phenomenon (SERP) by tissue Doppler imaging (TDI). METHODS: TDI was performed in 103 patients with coronary heart disease and 50 normal subjects. The segmental early diastolic velocity pattern was classified as SERP, postsystolic shortening (PSS) and normal pattern. Relations between the diastolic velocity pattern and coronary diameter stenosis were analyzed. RESULTS: SERP and PSS were significantly associated with actual coronary stenosis (odds ratio=4.39 and 5.59, both P<0.01). However, in each individual patient, SERP had a higher probability of appearing in the territory supplied by the artery with the relatively mildest stenosis (odds ratio=12.53, P<0.01), whereas PSS had a lower probability in the territory with the relatively mildest and secondary coronary stenoses (odds ratio=0.33 and 0.41, P<0.01). CONCLUSION: The segmental early diastolic peak velocity may appear in the isovolumic relaxation period and not necessarily only during the rapid filling phase. This phenomenon occurs more frequently in the perfusion territory of the artery with relatively mild stenosis, which may play a role in compensation for the delayed relaxation of PSS segments to maintain isovolumic status of the left ventricle.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期：2010-07-02.作者简介：黎志国，本科生Email:guoguo20080601@163.com
更新日期/Last Update: 2011-03-17