定量组织速度成像评价肺动脉高压患者右室收缩协调性的初步研究  

Clinic study of assessing myocardial dyssynchrony contraction in patients with pulmonary hypertension by quantitative tissue velocity imaging

作　　者：成艳[1] 叶争渡[1] 王洪霞[1] 

机构地区：[1]浙江大学医学院附属第一医院超声科,杭州310003

出　　处：《临床超声医学杂志》2007年第10期588-590,共3页Journal of Clinical Ultrasound in Medicine

摘　　要：目的探讨定量组织速度成像技术评价肺动脉高压患者右室收缩协调性的临床价值。方法肺动脉高压患者50例,根据肺动脉高压程度分为Ⅰ、Ⅱ、Ⅲ三组;正常对照组25例。测量右心结构参数:右室前壁厚度(RVAW)、右房横径(RAd)及右室横径(RVd),计算右心收缩功能参数:右心室面积变化分数(RVa%)、三尖瓣环收缩期峰值速率(Sa)。应用定量组织速度成像技术(QTVI)测量右心室3个壁6节段的纵轴收缩达峰时间(TQ-S),计算右心室收缩延迟时间(ΔTQ-S)。结果与对照组比较,肺动脉高压Ⅱ、Ⅲ组的TQ-S、ΔTQ-S显著延长(P<0.05)。肺动脉高压患者的TQ-S、ΔTQ-S与RVAW、RAd、RVd及RVa%、Sa显著相关(P<0.05)。结论肺动脉高压引起右心室收缩不协调,定量组织速度成像能对其进行准确评价。Objective To assess myocardial dyssynchrony contraction in the patients with pulmonary hypertension（PH） by quantitative tissue velocity imuging（QTVI）. Methods Fifty patients with PH were divided into Ⅰ , Ⅱ and Ⅲ groups according to the pulmonary artery systolic pressure and another 25 healthy volunteers served as control group. RV structure parameter （thickness of free wall （RVAW）, RA dimensio（RAd）, RV dimension （RVd）, systolic function parameter （RV fractional area change （RVa%） and peak systolic velocity of tricuspid annular（Sa） were measured and calculated. TQ - S of each segment and ATQ - S of right ventricular were measured by QTVI. Results Compared with the control group, TQ- S and ATQ- S were significantly lower in both group Ⅱ and Ⅲ （P 〈 0.05）. TQ-S and ATQ- S were significantly correlated to RVAW, RAd, RVd, RVa% and Sa（ P 〈 0.05）. Conclusion Myocardial dynssynchrony contraction has presenced in right ventricular in the patients with PH and QTVI can accuratedly assess myocardial dyssynchrony contraction in the patients with PH.

关 键 词：超声心动描记术 肺动脉高血压 心肌收缩 定量组织速度成像 

分 类 号：R541.105[医药卫生—心血管疾病]