Objective to investigate the efficacy and safety in patients underwent operation for postoperative residual shunt of ventricular septal defect (VSD).
目的探讨先天性室间隔缺损(VSD)修补后残余漏的手术疗效及预防VS D残余漏的要点。
2
The result indicated that the residual stress in the product produced by optimized project was decreased obviously, the volumetric shrinkage was homogeneous and the defect became slight.
结果表明，优化工艺后成型的复杂壳体制件的残余应力明显减小，体积收缩也比较均匀，缺陷明显减轻。
3
For all patients, residual fibrotic tissue of subchondral bone was removed from the defect.