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速度向量成像技术对慢性肺动脉血栓栓塞症患者右室功能的评价 |
邹晓黎,鹿麟 |
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(大连市友谊医院;大连医科大学附属二院) |
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摘要: |
目的 应用速度向量成像(velocity vector imagine,VVI)技术对慢性肺动脉血栓栓塞症患者的右室局部及整体功能进行评价。
方法 心尖四腔切面应用彩色多普勒超声根据三尖瓣最大返流速度计算出肺动脉收缩压,将慢性肺动脉血栓栓塞症病人分为轻、中及重度肺动脉高压组及无肺动脉高压组,同时应用VVI技术评价不同肺动脉收缩压组慢性肺动脉血栓栓塞症患者右室侧壁及室间隔基底段、中间段及心尖段、右室整体的纵向收缩期峰值速度(Vs)、位移(D)、应变(S)及应变率(SR),并与正常对照组进行比较。
结果 与正常对照组相比,不同肺动脉收缩压组慢性肺动脉血栓栓塞症患者右室局部和整体的应变、应变率、速度、位移等指标均降低,其中肺动脉高压程度越重,上述指标越低。
结论 速度向量成像技术评估慢性肺动脉血栓栓塞症患者右室整体及局部功能异常方面具有优越性。 |
关键词: 超声心动图 速度向量成像 慢性肺动脉栓塞 肺动脉高压 |
DOI: |
投稿时间:2016-02-26修订日期:2016-06-05 |
基金项目: |
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Quantitative Assessment of right ventricle of chronic pulmonary thromboembolism with echocardiographic Velocity Vector Imaging |
Xiaoli Zou,Lin Lu |
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Abstract: |
Objective Using Velocity Vector Imaging (VVI) to assess quantitatively partial and overall right ventricular function in patients of chronic pulmonary thrombogenic embolism.
Methods Two-dimensional echocardiographic images from the
standard apical four chamber were analyzed.Pulmonary artery systolic pressure was calculated according to tricuspid maximal regurgitant velocity in Color Doppler ultrasound. Chronic pulmonary thromboembolism patients were divided into mild, moderate and severe pulmonary hypertension group and non pulmonary hypertension group.Longitudinal systolic myocardial velocity(Vs),displacement (D),strain(S),and strain rate(SR) were determined at the basal,mid and apical segments of the right lateral ventricular wall and ventricular septum in patients of chronic pulmonary thrombogenic embolism,comparing with normal control group.
Results Compared with normal control group, partial and overall indicators of Vs,D,S and SR were decreased in patients of chronic pulmonary thrombogenic embolism. The higher the degree of pulmonary hypertension,the lower the above indicators.
Conclusion VVI is useful for assessing quantitatively the partial and overall function in patients of chronic pulmonary thrombogenic embolism. |
Key words: Echocardiography, Velocity Vector Imaging (VVI), chronic pulmonary embolism, Pulmonary Hypertension |
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