多普勒组织成像技术对高血压病患者左室舒张功能的评价  

Assessment of the left ventricular diastolic function of patients with essential hypertension by pulsed-wave Doppler tissue imaging

作　　者：亢卫华[1] 王文亮[1] 蔡志雄[1] 王晓青[1] 郭舜奇[1] 柯斌[1] 

机构地区：[1]中山大学附属汕头医院彩超室,515031

出　　处：《中国医师进修杂志（内科版）》2006年第5期31-32,共2页Chinese Journal of Postgraduates of Medicine

摘　　要：目的探讨多普勒组织成像(DTI)技术评价高血压病患者左室舒张功能的价值,寻求一种无创、可靠的评价高血压病左室舒张功能的新方法。方法用脉冲DTI检测20例健康成人(A组),35例高血压病左心室心肌质量指数(LVMI)正常患者(B组),30例高血压病左心室肥厚(LVH)患者(C组)的二尖瓣环舒张早期运动峰值速度Ea峰、舒张晚期运动峰值速度Aa峰及Ea/Aa值,同时常规用脉冲多普勒检测二尖瓣口血流舒张期峰值速度E峰、A峰及E/A值。结果B组和C组二尖瓣口血流参数、二尖瓣环DTI参数均明显低于A组(P<0.05或P<0.01);B组和C组间E峰、E/A值差异无统计学意义(P>0.05),但C组Ea峰、Ea/Aa明显低于B组(P<0.05)。结论DTI技术能定量高血压病患者二尖瓣环舒张期运动速度的改变,有利于对舒张功能受损程度的判断,优于传统的脉冲多普勒检测二尖瓣口血流法。Objective To explore the value of Doppler tissue imaging （DTI） in assessing the left ventricular diastolic function of patients with essential hypertension. Methods Twenty healthy person （group A）, 35 essential hypertension （EH） patients with normal left ventrecular mass index （LVMI, group B） and 30 EH patients with left ventricular hypertrophy （LVH,group C） were included. The mitral annular velocity in early diastole （Ea） and late diastole （Aa） were detected by DTI, meanwhile the mitral inflow velocity E and A were detected. Results The E, E/A , Ea, Ea/Aa of group B and group C were lower than those of group A （P〈 0.05, P 〈0.01）. No significant difference were noted between the E, E/A of group B and those of group C （ P 〉0.05）. The Ea, Ea/Aa of group C were lower than those of group B （P 〈 0.05）. Conclusions These findings suggest that DTI can quantify the mitral annular velocity changes of hypertension patients and can evaluate the severity of left ventricular dysfunction. This technique is better than mitral inflow velocity technique.

关 键 词：多普勒组织成像 高血压病 左室舒张功能 

分 类 号：R445.1[医药卫生—影像医学与核医学] R544.1[医药卫生—诊断学]