希阿里网的超声诊断及临床意义——附7例报告并文献复习

Study on Chiari Netword and its Clinical Relevance by Ultrasonography,7 cases report and review of the literature

目的探讨希阿里网(Chiari network,CN)的超声诊断及临床意义。方法应用美国Vivid7型彩色多普勒超声诊断仪,MS3探头,频率2.5-5.0MHz。观察630例受检者右心房内CN的形态、回声、活动度并测量长度。结果共检出CN7例,显示率1.11%。CN大多位于下腔静脉入口周缘,止于三尖瓣环上方、冠状窦开口周围或附近的右房壁上。长度20-35mm。4例呈条索状,3例呈网状。其中1例频发房性早搏;1例频发室性早搏;1例伴心房底部陈旧性血栓可能;7例均未见血液动力学改变。结论CN是一种先天性发育变异,一般无临床症状和体征,但在心脏介入诊断、治疗的操作中可带来困难;有致心律失常作用;是血栓形成的危险因子。超声诊断CN准确、便捷。

Objoctive To evaluate echocardiographic diagnosis of Chiari network（CN） and its clinical relevance. Methods The morphous,echo,movement and range of Chiari network were examined by 2D echocardiography with GE Vivid 7 ultrasound system （probe frequency 2.5-3.5MHz）in 630 out-patients. Results Chiari network was present in7 of 630 patients（prevalence 1.11%）,of 7 CN cases, 4 cases presented as strip-shaped and 3 cases presented as reticulate.Also,1 case have frequent premature atrial contraction, 1 case have frequent ventricular premature beats, 1 case have suspicion of obsolete thrombus in the bottom of atrium but all 7 cases have no hemodynamic effect. In most cases, one side of CN attached to the crista terminalis on the free wall of the right atrium and the other side attached to the coronary sinus, range from 20-35mm. Conclusion CN is a congenital disorder characterized by an absence of clinical symptom and sign commonly, but accidents cardiac interventional. Alao,there was a possibility of arrhythmogenic effects and thrombosis. Echocardiographic imaging diagnostic of Chiari network is accurate and convenient.