Peritoneal dialysis requires access to the peritoneal cavity. During a minor operation, performed using a local or a general anesthetic, the doctor inserts a soft plastic tube into the abdomen. This tube is called a peritoneal dialysis catheter (PD catheter). It acts as a permanent pathway into the peritoneal cavity.

The PD catheter is about 30 cm (12 inches) long, and about as wide as a pencil. About 15 cm (6 inches) of the tube remains outside your body, allowing the disposable dialysis bags to be attached. The place where the catheter comes out of the body is called the exit site.

The catheter is usually placed just below and slightly to the side of the belly button. Your doctor or nurse will determine with you the exact location for the exit site so that the catheter can be comfortably and easily hidden under clothing.

The catheter exit site is usually covered with a dressing and the catheter is taped to the skin to avoid pulling on the exit site.

Your peritoneal-dialysis nurse will teach you a simple routine for cleaning and looking after the exit site. Proper care of the exit site is important in order to avoid infection.