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应用定量组织速度图、组织位移、应变及应变率评价正常人左心室局部心肌功能(PDF)

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:
2007年第2期
页码:
222-225
栏目:
临床研究
出版日期:
2007-04-01

文章信息/Info

Title:
Quantification of left ventricular regional myocardial function using Dopplerderived velocity, displacement, strain and strain rate in healthy subjects
作者:
吴红宁李滨滨
南京市胸科医院医学影像二科,江苏 南京 210029
Author(s):
WU Hongning LI Binbin
Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University. Xi'an, 710032, Shaanxi, China
关键词:
定量组织速度组织位移应变应变率
Keywords:
quantitative tissue velocitydisplacementstrain
分类号:
R445.1
DOI:
-
文献标识码:
A
摘要:
目的 观察左室节段性心肌组织速度、位移、应变及应变率的正常值以及它们与年龄的关系。方法 对132例健康志愿者行组织多普勒检查,测量左心室各壁各节段心肌的峰值速度、组织追踪、应变及应变率。结果 ①心肌的峰值速度(V):不同室壁及同一室壁的不同节段有显著的差异性(P<0.05,P<0.01 ),收缩期峰值速度(VS)、舒张早期峰值速度(VE)与年龄负相关(分别为r=-0.52、r=-0.72, P<0.01),舒张晚期峰值速度(VA)与年龄呈正相关(r=0.46,P<0.01)。②组织位移(Ds):不同室壁及同一室壁的不同节段有显著的差异性(P<0.05,P<0.01 ),与年龄呈负相关(r=-0.41, P<0.01)。③心肌应变(ε):不同室壁的相同节段无显著差异性;同一室壁的不同节段有显著的差异性(P<0.01 ),与年龄呈负相关性(r=-0.28, P<0.01)。④心肌应变率: 收缩期应变率(Ssr):不同室壁及同一室壁的不同节段有显著的差异性(P<0.05,P<0.01 ),与年龄无相关性(r=-0.14 )。舒张早期应变率(Esr):不同室壁及同一室壁的不同节段无显著的差异性,与年龄呈负相关(r=-0.20,P<0.05)。舒张晚期应变率( Asr) :不同室壁及同一室壁的不同节段无显著的差异性,与年龄呈正相关(r=0.28,P<0.01)。⑤所有数据两性之间无显著差异性。 结论 大多数参数如心肌组织速度、位移、应变及应变率在不同室壁、不同节段有显著的差异性,与年龄相关。
Abstract:
AIM To determine the normal values for tissue velocity, displacement, strain and strain rate for the regional myocardial wall segments in the left ventricular and the relation of these values with age. METHODS In 132 healthy volunteers, the left ventricular myocardial velocity, displacement, strain and strain rate were measured using Doppler tissue imaging. The measurements were obtained from basal, mid and apical segments of walls visualized from left ventricular apical 4chamber, apical 2chamber and longaxis views. Analysis of covariance was used to examine the effects of age. RESULTS Most parameters such as myocardial velocities, strain, systolic strain rate and displacement (except early diastolic strain rate and late diastolic strain rate) showed a strong dependence on wall segment position. All the parameters except systolic strain rate showed significant dependence on age. CONCLUSION Most parameters have a strong dependence on wall segment position and age.

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备注/Memo

备注/Memo:
收稿日期:2006-02-17.作者简介:吴红宇,副主任医师,硕士Email:wuhongningdr@yahoo.com.cn
更新日期/Last Update: