To prevent infection in the bloodstream and blood vessel constriction, permanent hemodialysis access is preferred over short-term catheter use.
Permanent access to a patient's vascular system can be done in two ways: through the arteriovenous fistula and arteriovenous graft.
arteriovenous fistula
Arteriovenous (AV) fistula veins connect directly with arteries under the skin.
Vein that is used is a large vein, usually from the arm at the wrist or on the arm near the elbow.
arteriovenous graft
Arteriovenous (AV) graft is a synthetic graft blood vessels that connect arteries to veins.
Graft is made from the same material used on teflon coatings and usually use a tube diameter of 6 mm.
Quality Venous Blood Vessels
If the quality of the patient's veins worse, that is too narrow or too thin, then the graft will be selected as the AV dialysis access.
AV graft is also an option that is usually performed in patients with a history of smoking or diabetes.
range Time
Once installed AV fistula, it takes at least 8 to 12 weeks for large and strong enough to be used in dialysis. While the AV graft can be used at least 2 weeks after transplantation.
If needed dialysis before AV fistula is mature enough, then the tunnel should be used short-term catheters.
durability
AV fistulas are more durable when compared to AV graft. According to the UC San Diego Department of Vascular Surgery, half of the entire implantation AV graft will clot in the first year.
