孤立性心室肌致密化不全的超声心动图特征分析

The Echocardiographic Characteristics of Isolated Noncompaction of the Ventricular Myocardium

目的分析孤立性心室肌致密化不全(INVM)的超声心动图特征,评价超声心动图对该病的诊断价值。方法对28例INVM患者常规行超声心动图检查,观察心室肌各节段的组织结构和血流分布等特征性超声心动图表现,观察测量其受累节段非致密化心肌与致密化心肌的厚度,并计算两者比值。结果 28例INVM患者二维超声显示受累的心室肌节段可见粗大的肌小梁及其间深陷的隐窝,彩色多普勒显示隐窝内血流缓慢,且与心腔相通。最常受累的节段为心尖段及侧壁、后壁、下壁的中间段。结论超声心动图能显示INVM特征性的异常表现,并能对受累的节段作出准确的判断,是INVM首选的检查方法。

Objective To study the echocardiographic characteristics of isolated noncompaction of the ventricular myocardium （INVM） , and to assess its value in the diagnosis of INVM. Methods Routine echocardiography were used in 28 INVM patients,to observe the echocardiographic characteristics of ventricular segment and blood flow distribution, to observe affected ventricle segment, and calculate the ratio of the the thickness of noncompaction myocardium to that of compaction myocardium. Results For all 28 patients with INVM ,2D-echocardiography showed prominent trabeculations and mulotiple deep intertrabecular recesses in affected ventricle segment, color Dopplor flow imging （CDFI） showed blood flow from the ventricular cavity into the intertrabecular recesses. The areas were often at apex, mid-lateral wall, mid-posterior wall and mid-inferior wall in left ventricle. Conclusion Specific characteristics of INVM can be demonstrated on echocardingmphy, and make judgement for affected ventricle segment, which is the first method for diagnosing INVM.