彩色多普勒成像在预防与观察室间隔缺损修补术后残余瘘的应用

CDFI apply in preventing and observing residual fistula after closure of ventricular septal Defect

目的：探讨CDFI对VSD修补术后残余疾的价值。材料与方法：用彩色多普勒超声诊断仪检查所有室间隔缺损病人，发现5例病人有残余瘘，并对病人进行跟踪观察。结果：2例病人于12周后自然愈合，其Vamx＜2m／s；另外3例术后52周内尚未闭合，其Vamx均＞2m／s；提示Vamx2m／s可以作为判断残余瘘自然愈合的量化界限。结论：CDFI能够很好地显示VSD与周边结构的关系，可以指导术者采取恰当的修补方法避免残余瘘。

Purpose: To explore the useful value of CDFI for post -operative residual fistula of VSD. Materials and methods: Continuously observing the 5 cases of residual fistula after closure of VSD. Results: 2 cases of them were found recovery in 12 weeks after surgery .their Vmax all<2m/s; another 3 cases were not closed in 52 weeks after surgery,their Vmax are all> 2m/s. These findings suggest that Vrnax 2 m/s may be considered as a measure limit to judge whether residual fistula can close by itself. The theoritical basis of this viewpoint according to the slow residua shunt in the large recovery possihle by thrombosis and organizatien. One case of residual fistula after closure of VSD was discovered in 4 weeks of post operation. To this phenomenon of delay appearance. post operation trace should be emphasized by clinical doctors. Conclusion: VSD and it's around structure can be showed very good by CDFI,then residual fistula due to wronglV suturing can be avoided. Prevention of residual fistula after closure of VSD was approached.