破口特点与Stanford B型主动脉夹层腔内修复术后病情进展的关系

The relationship between the characteristics of tears and the progression of Stanford type B aortic dissection after endovascular treatment

Stanford B型主动脉夹层(B型夹层)接受腔内治疗后,长期随访期间会出现主动脉瘤样扩张等并发症,患者需接受再次干预。研究结果显示,B型夹层的预后与破口的特点存在一定的相关性:破口越长,主动脉直径的增速越快,破口位置也会影响假腔的血栓化。血流动力学研究结果也提示,主动脉夹层破口特点的不同,会造成真假腔内压力、血液流速和流量等的变化,记录上述变化可在一定程度上预测B型夹层的预后。B型夹层破口的特点包括大小、位置、数量、残余破口和支架引发的新破口5个方面,综合相关的血流动力学研究结果,总结破口特点对B型夹层进展的影响,可为开展优化临床治疗的进一步研究提供依据。

Endovascular treatment of Stanford type B aortic dissection(type B dissection)has been widely used.There will be complications such as aortic dilatation,which will lead to poor prognosis of some patients.With more in-depth researches,it was found that there was a possible correlation between the prognosis of type B dissection and tears,such as the increasing of aortic diameter would be faster with longer tears,and the location of the tear will affect the thrombosis of the false lumen.Studies on hemodynamics have also found that different characteristics of tears of aortic dissection can cause changes in the pressure,blood flow rate and blood capacity in the true and false lumens recently.The hemodynamic changes can be used to predict the prognosis of type B dissection.The main characteristics of tears included the size,position,number of tears,residual tears and stent graft induced new entry.Describing the effect of tear characteristics on the development of type B dissection,can provide the basis for the clinical treatment and further research of type B dissection.