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速度向量成像技术评估高血压病患者左室扭转运动的价值(PDF)

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:
2011年第3期
页码:
364-367
栏目:
临床研究
出版日期:
2011-05-12

文章信息/Info

Title:
Evaluation of left ventricular twist by velocity vector imaging in patients with primary hypertension
作者:
杨丽玲; 姜志荣; 郑娟
青岛大学医学院附属医院特检科，山东 青岛266061
Author(s):
YANG Li-ling;  JIANG Zhi-rong;  ZHENG Juan
Department of Ultrasonic Diagnostics, Medical Hospital, Qingdao University, Qingdao 266061, Shandong, China
关键词:
速度向量成像技术; 扭转; 高血压; 原发性
Keywords:
velocity vector imaging;  rotation;  primary hypertension
分类号:
R541.1
DOI:
-
文献标识码:
A
摘要:
目的:探讨速度向量成像(velocity vector imaging，VVI)技术评价高血压病患者左室扭转运动的临床价值。方法: 应用彩色多普勒超声对28例正常人和68例原发性高血压患者，于胸骨旁左室心底部、心尖部经胸采集并存贮左室短轴二维图像，根据Ganau分类法，将原发性高血压患者分为3组：左室正常构型组（20例）、向心性肥厚型组（23例）和离心性肥厚型组（25例）。应用VVI 脱机分析软件测量行脱机分析，计算并记录心底部旋转角度峰值(PBr)，心尖部旋转角度峰值(PAr)，左室扭转角度峰值(Ptw)，解旋速度峰值(PutwV)，解旋速度达峰时间(TPKutw)、等容舒张期解旋百分比(Iutw％)。结果: ①与对照组相比，高血压病组左室PutwV增大，TPKutw延迟，Iutw％下降（P<0.05），高血压病各组间PutwV、TPKutw 、Iutw％差异无统计学意义；正常构型组、向心性肥厚型组的Ptw明显增大（P<0.05，P<0.01），离心性肥厚型组Ptw下降（P<0.01），高血压病各组间Ptw差异有统计学意义（P<0.05，P<0.01）。②Ptw与左室射血分数（LVEF）呈正相关(r=0.65，P<0.05)。结论: VVI技术可以准确测量心室扭转角度，能从心肌解剖力学角度早期敏感评估高血压病患者的心功能变化。
Abstract:
AIM:To probe into the clinical value of velocity vector imaging (VVI) in measuring left ventricular twist (LVtw) in patients with primary hypertension. METHODS: Systolic and diastolic heart wall motion on a basal and on an apical level of the myocardium were examined in 68 patients with primary hypertension and 28 age-matched healthy controls using color Dopple echocardiography. Based on Ganau, patients with primary hypertension were divided into three groups: normal geometry (20 cases), concentric hypertrophy (23 cases) and eccentric hypertrophy (25 cases). LVtw and untwist were defined as apical rotation (rotation rate) relative to the basal level. RESULTS: Compared with controls, peak LV untwist velocity in patients with hypertension increased, the time to peak untwist velocity was prolonged, and the % isovolumic untwist decreased (P<0.05). Peak LVtw was significantly higher in patients with concentric hypertrophy and normal geometry compared with controls (P<0.05, P<0.01). Peak LVtw was significantly shorter in patients with eccentric hypertrophy compared with controls (P<0.01). Significant correlation was found between LVtw and LVEF (r=0.65, P<0.05). CONCLUSION: VVI is a reliable and noninvasive approach to measuring left ventricular torsional deformation and to evaluate early changes of heart function.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期：2010-06-27.通讯作者：姜志荣，主任医师，主要从事心脏超声影像诊断的研究Email:jiangzhirong2@163.com 作者简介：杨丽玲，硕士生Email:haixing911@126.com
更新日期/Last Update: 2011-03-17