Peritoneal Dialysis (PD) is a treatment that uses your peritoneum, a membrane lining your abdominal cavity, as a filter to remove wastes from your body. This type of dialysis requires the assistance of a care provider. Peritoneal dialysis is carried out through a dialysis catheter placed in the abdomen, where you exchange the old solution for a new solution. An exchange has 3 steps: STEP 1: Drain The PD catheter is connected to a drain bag, and the used and saturated solution inside the abdomen is drained. This solution contains waste as well as excess fluid. STEP 2: Fill After the old solution has been completely removed from the abdomen, a new dialysis solution is poured in through the catheter to fill the peritoneal cavity, which is located in the abdomen. STEP 3: Dwell The dialysis tubing and bags are removed once the new solution has been placed. You can do your normal activities while wearing only a short tubing set covered by a sterile cap. During this time, the dialysis solution remains in the peritoneal cavity. This is the time when dialysis takes place, and the solution collects waste and excess fluid from your body.