When you get surgically set up for the peritoneal dialysis procedure, the surgeon inserts a catheter into this membrane and brings the hub of it to the surface. The hub is locked down under rigorous, anti-infective clamps to keep bugs out of your belly. For dialysis, you take the dialysate, much like the solution that is in the machine in hemodialysis, and allow the solution to drain into your abdomen by gravity. That solution sits inside your abdomen and pulls the wastes and fluid from your body by way of the blood that is coursing through the peritoneum. After five or six hours, you hook up to another bag and drain all of the solution out. You simply discard the bag. Most doctors want you to do four to six “exchanges” like this per day to maintain your health.