组织运动三尖瓣环位移自动追踪技术评价房间隔缺损患者右心室功能的研究

Assessment of Right Ventricular Function in Atrial Septal Defect by Automated Tissue Motion Tracking of Tricuspid Annular Displacement

目的探讨应用组织运动瓣环位移自动追踪技术(TMAD)测量三尖瓣环位移(TAD),评价房间隔缺损(ASD)患者右心室收缩功能的临床应用价值。方法选择房间隔缺损患者36例为病例组,健康体检者23例为对照组。应用二维超声测量主肺动脉内径(MPA)、右心房左右径(RA)、右心室前后径(RV)及右心室射血分数(RVEF)。应用TMAD技术测量三尖瓣环右室游离壁处、室间隔处及二者连线中点处相对于右室心尖部的收缩期峰值位移(T1、T2、Tm),并对两组结果进行分析比较。结果病例组T1、Tm明显低于对照组[T1(19.1±4.8)mm比(22.4±3.0)mm;Tm(15.6±3.7)mm比(19.0±2.2)mm,P<0.05];T2在两组间的差异无统计学意义。结论 ASD患者T1和Tm较正常人减低,TMAD技术或可用于定量评价ASD患者的右心室收缩功能。

Objective To explore the clinical value of tricuspid annular displacement（TAD） measured by tissue motion annular displacement（TMAD） technique in patients with atrial septal defect（ASD）.Methods Thirty-six patients with ASD were enrolled as patient group and twenty-three normal individuals were enrolled as control group.The inner diameter of main pulmonary artery（MPA）,right atrium（RA）,right ventricular（RV） and right ventricular ejection fraction（RVEF） were measured by two-dimensional echocardiography.The TAD of the two groups at right ventricular free wall,septum and the mid-point（recorded as T1,T2,Tm） were measured by TMAD technique and compared.Results The T1,Tm of the patient group were lower than that of the control group [（19.1±4.8） mm vs（22.4±3.0） mm,（15.6±3.7） mm vs（19.0±2.2） mm,respectively,P0.05].The T2 had no significant difference between the two groups.Conclusion T1 and Tm of the patients were lower significantly than the normal individuals,so TMAD technique may be used to evaluate the right ventricular systolic function in patients with ASD.