Effects of blood volume expansion fluids on human aortic endothelial cells
anchor in the retroperitoneum resulting in the absence midgraft endothelial coverage. There was no progression of mid-graft neointimal tissue hyperplasia at 6, 8, 12, and 24 weeks (54.99±52.02 μm; 45.00±58.39; 45.84±46.60; 47.36±37.08 μm, P=.77). Conclusions: A looped interposition-graft model provides sufficient isolation length to clearly distinguish transanastomotic from transmural endothelialisation for up to half a year. Ingrowth from surrounding tissue appears essential for transmural mid-graft endothelialisation. The lack of ongoing mid-graft luminal narrowing confirms that subendothelial tissue proliferation due to transmural growth is of no concern.