Patients undergoing dialysis for kidney failure may develop narrowing and blockage of their dialysis access grafts. We can open up failing or failed grafts using a combination of clot-dissolving drugs, clot-busting tools, angioplasty and stents. These techniques may allow for a longer use of a graft, avoiding the need for surgical revision. We can also place catheters directly into the veins of renal failure patients for dialysis.