Objective To study the feasibility of transplanting autologous venous endothelial cells to luminal surface of allogenic vein and increasing the long-term patency rate after transplantation.

Objective To investigate the prevention of sirolimus and catopril respectively and their associated effect on allograft angiopathy in rats,then dicuss their potential mechanism of action and possible synergistic action.

Nursing of postoperative complications in children undergoing right ventricular outflow tract reconstruction with cryopreserved viable valved homograft;