DialyseGraft

DialyseGraft is a term that refers to a type of synthetic vascular access device used for hemodialysis. Hemodialysis is a medical procedure that filters waste products and excess fluid from the blood when the kidneys are unable to perform these functions adequately. For hemodialysis to be effective, a consistent and reliable way to access the bloodstream is required, usually involving a large blood flow.

A dialyse graft is typically constructed from a synthetic tube, often made of polytetrafluoroethylene (PTFE), which is surgically placed between an artery and a vein in the arm or leg. This creates a direct connection that allows for repeated access for the dialysis needles. The synthetic material is designed to be biocompatible and durable, allowing it to withstand repeated punctures and the high blood flow rates needed for dialysis.

Before dialysis treatments can begin, the graft needs a period to heal and to develop a blood supply around it. Once mature, two needles are inserted into the graft during each dialysis session. One needle draws blood from the graft to be filtered by the dialysis machine, and the other needle returns the filtered blood back to the body. Dialyse grafts offer an alternative to arteriovenous fistulas (AVFs), which are created by surgically connecting an artery directly to a vein, and to central venous catheters. While AVFs are generally preferred due to lower complication rates, dialyse grafts can be a viable option when AVFs are not feasible or have failed. Like any medical device, dialyse grafts can be associated with potential complications such as infection, thrombosis (blood clotting), or stenosis (narrowing of the graft). Regular monitoring and timely intervention are crucial for maintaining the function and longevity of a dialyse graft.