Long-term results after repair of XXXX by patch grafting.

@entity1 @entity1661 @entity281 @entity1498 @entity439 @entity2849
Six @entity1 who had been operated upon for @entity1498 with patch grafting between 1958 and 1960 were followed for a minimum of 17 years. One of these @entity1 received an aortic homograft patch for an @entity1661 and was in excellent health 21 years later. An aortogram showed no @entity439 formation. One other @entity1 was reoperated upon 1 month after the primary operation because of a @entity2849 . The remaining four @entity1 received either a Dacron graft (three @entity1 ) or an Orlon graft (one @entity1 ), and they all developed an @entity439 in the aortic wall opposite the patch graft. Three of these @entity1 successfully reoperated upon, but the fourth @entity1 died 17 years after patch grafting because of rupture of the @entity439 . Microscopy (in three @entity1 ) showed varying degrees of degenerative changes in the aortic wall opposite the patch. There was no evidence of @entity281 or foreign body reaction in these parts of the aortic walls. The @entity439 develop after patch grafting probably is that part of the circumference is replaced by a material with tensile characteristics differing from those of the aorta itself. Repair of @entity1498 with synthetic patches therefore cannot be recommended.
