抄録
Neo-arterial walls of polyester vascular prostheses were examined under an optical microscope from 30 to 210 weeks after implantation in the thoracic aortae of 50 dogs.
Ulcers of the neo-arterial wall with deposition of thrombi were observed in 50% of all the specimens. In 72% of the specimens with the complication, scar tissue was noticed on the adventitial side of the deseased wall. These observations suggest us that the scar tissue leads to this complication because the neo-arterial wall was forced to be in the poor condition both nutritionally and constractionally due to conversion of the grafts by scar contraction.
From this result, it is hopeful to avoid the complication by making efforts to prevent formation of scar tissue surrounding the grafts during implantation.
