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目的探讨定量组织速度成像技术(quantitative tissue velocity imaging,QTVI)评价慢性肺心病患者右室功能的临床价值。方法取52例慢性肺心病患者和60例正常人进行经胸超声检查,采用标准心尖四腔心切面,应用QTVI对右室侧壁中间部、后室间隔中间部、三尖瓣前叶及隔叶瓣环等部位进行定量分析。结果与正常对照组相比,慢性肺心病组三尖瓣前叶及隔叶瓣环处VS、VE和VE/VA均明显减低,差异具有显著性(P<0.05),VA在侧壁及后间隔的中间部有所升高,但在瓣环处均减低。慢性肺心病组瓣环处及中间部VS、VE和VE/VA在侧壁与后间隔比较无明显差异(P>0.05)。结论 Q TVI技术能准确、直观地反映肺心病患者右室收缩及舒张功能,具有重要的临床价值。
Objective To investigate the clinical value of quantitative tissue velocity imaging (QTVI) in assessing right ventricular function in patients with chronic cor pulmonale. Methods Twenty-two patients with chronic cor pulmonale and 60 normal subjects underwent transthoracic echocardiography. Using standard apical four-chamber view, QTVI was used to evaluate the effects of QTVI on the medial part of the right ventricular wall, the middle part of the posterior chamber, Leaf ring and other parts for quantitative analysis. Results Compared with the control group, the levels of VS, VE and VE / VA in the anterior tricuspid valve and the septal lobe of chronic pulmonary heart disease group were significantly lower than those in the control group (P <0.05) The middle of the interval increased, but decreased at the annulus. There were no significant differences in VS and VE / VA between the annulus and midsection of chronic cor pulmonale (P> 0.05). Conclusion Q TVI technique can accurately and directly reflect the right ventricular systolic and diastolic function in patients with pulmonary heart disease, and has important clinical value.