What is Haemodialysis and how does it work

Haemodialysis Access
     To place an access to get your blood, a surgeon will perform an operation to strengthen one of your veins or to put a soft tube inside your arm or thigh.
If possible, the surgeon will attach a vein and an artery together to form a fistula. If your veins are small or weak, the surgeon inserts a graft instead. This is a soft tube connected to an artery on one end and a vein on the other. Both a fistula and a graft are underneath the skin. Placing the access requires a small surgical procedure. A permanent access takes a few months to mature properly before it can be used.
If you need dialysis before a permanent access is in place, the doctor will create a temporary access. This is done by placing a special tube, called a catheter, in a large blood vessel under the collarbone or in the leg (groin).
Caring for a Haemodialysis Access
    

Check your access every day to be sure that blood is flowing through it. You can do this by place your fingers lightly over the access to feel the pulse.
Don't put pressure on the access, it can cause clotting.
Don't sleep on the access arm.
Don't hold a child or anything heavy with the arm that has the access.
Don't wear jewellery or tight clothing over the access.
Don't let anyone draw blood or take your blood pressure in the arm with your access.