摘要
目的:应用速度向量成像(VVI)技术,探讨肥厚型心肌病(HCM)患者左室心肌收缩期应变(ε)、应变率(SR)的改变。方法:选取20例室间隔肥厚的HCM患者和20例年龄配对的健康志愿者,在VVI模式下,分别取心尖四腔、三腔和二腔切面.分析左室18个室壁节段的ε和SR曲线.测量收缩期峰值。结果:对照组左室心肌收缩期SR值为(-1.06±0.09)/s.HCM组为(-0.74±0.16)/s,HCM组左室心肌各节段收缩期SR较对照组明显减低.差异有统计学意义(P<0.05)。HCM组各节段收缩期SR减低不仅仅限于肥厚部位.也存在于非肥厚部位。结论:HCM患者左室心肌收缩期ε和SR明显低干对照组.HCM患者收缩期ε和SR的减低不仅限于肥厚部位。
Objective： To observe the changes of left ventricular （LV） systolic strain（ε） and strain rate（SR） in patients with hypertrophic cardiomyopathy （HCM） and normal healthy subjects by velocity vector imaging（VVI）. Methods： Twenty patients with HCM and 20 age-matched healthy adults were enrolled in this study. The peak systolic ε , SR of 18 segments in the 4, 3 and 2-chamber views were measured by VVI. Results： It was found that the systolic SR was （-1.06±0.09）/s in the healthy control group and （-0.74±0.16）/s in the HCM group（P〈0.05）. The reduction of systolic SR in HCM group was found not only at the hypertrophic regions but also at normal regions. Conclusion： The systolic ~ and SR in HCM group is lower than that in the normal control group. The reduction of systolic ε and SR in HCM group is not limited to the hypertrophic region.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
2008年第4期390-394,共5页
Academic Journal of Second Military Medical University
关键词
肥厚型心肌病
速度向量成像
应变
应变率
左心室
心肌收缩期
hypertrophic cardiomyopathy
velocity vector imaging
strain
strain rate
left ventricle
systole
