超声斑点追踪显像评估原发性高血压患者左心室扭转  

Evaluation of left ventricular twist with speckle tracking echocardiography in patients with essential hypertension

作　　者：李楠[1] 任卫东[2] 靳忠民[3] 杨军[1] 

机构地区：[1]中国医科大学附属第一医院心功能科,辽宁沈阳110001 [2]中国医科大学附属盛京医院超声科,辽宁沈阳110004 [3]沈阳市第四人民医院超声科,辽宁沈阳110031

出　　处：《中国医学影像技术》2010年第11期2110-2113,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨超声斑点追踪显像(STE)技术评价原发性高血压(EH)患者左心室旋转和扭转变化规律的价值。方法对30例左心室正常构型(LVN)的EH患者、30例左心室重构(LVR)的EH患者及30名正常人,经胸采集左心室短轴心尖水平和心底水平的二维图像,测量并计算心底部旋转角度峰值(Rotbase)、心尖部旋转角度峰值(Rotap)、左心室峰值扭转角度(Ptw)、收缩末期扭转角度(AVCtw)、等容舒张末期扭转角度(MVOtw)、扭转角度达峰时间(t-Ptw)和等容解旋率(IUR)。结果与正常对照组相比,高血压病LVN组及LVR组的Ptw、AVCtw、MVOtw、Rotap、Rotbase增加,IUR减低(P均<0.05);t-Ptw有延长趋势,但差异无统计学意义(P>0.05);与LVN组比较,LVR组的Ptw、AVCtw、MVOtw、Rot-base增加,IUR减低(P均<0.05)。高血压患者的IUR与二尖瓣环间隔及侧壁部位的舒张早期峰速度均值(Em)呈正相关(r=0.685,P<0.001)。结论 STE技术可有效评估EH患者左心室扭转特征。Objective To observe the value of speckle tracking echocardiography（STE）in assessing changes in left ventricular rotation and twist in patients with essential hypertension（EH）.Methods Thirty EH patients with left ventricular normal geometry（LVN）,30 EH patients with left ventricular remodeling（LVR）and 30 normal controls were studied.Two-dimensional images were acquired from the left ventricular short-axis views at the level of apex and base.Peak rotation on basal plane（Rotbase）,peak rotation on apical plane（Rotap）,peak twist angle（Ptw）,twist at aortic valve closure（AVCtw）,twist at mitral valve opening（MVOtw）and time to peak twist（t-Ptw）were measured.Isovolumic untwisting rate（IUR）was calculated.Results Compared with tcontrol group,the value of Ptw,AVCtw,MVOtw,Rotap and Rotbase increased,while IUR decreased in LVN and LVR group（all P0.05）.There was a prolonged trend in tPtw,but no statistical difference was found（P0.05）.Compared with LVN group,the value of Ptw,AVCtw,MVOtw and Rotbase increased,and IUR decreased in LVR group（all P0.05）.IUR correlated positively with the mean value of early diastolic velocity of septal and lateral mitral annulus（Em）in EH patients（r=0.685,P0.001）.Conclusion STE can effectively evaluate the characteristics of left ventricular rotation and twist.

关 键 词：超声心动描记术 心室功能 左 旋转 扭转 斑点追踪显像 高血压 

分 类 号：R540.45[医药卫生—心血管疾病] R544.1[医药卫生—内科学]