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Dialysis is a treatment for kidney failure that helps filter waste products from the blood when the kidneys are not working properly. Peritoneal dialysis (PD) uses a membrane in the abdomen (the peritoneal membrane) as a natural filter to clear wastes and extra fluid from the body and to keep chemical levels in the body as close to normal as possible.
Peritoneal dialysis does not require travel to a dialysis center. The dialysis process (called an exchange) can be done at home, often at night during sleep. But it must be done on a continuous, daily basis.
The first step in peritoneal dialysis is called the Fill, in which the dialysis solution enters the peritoneal cavity. The second step is the Dwell. During the Dwell step, while the solution is in the peritoneal cavity, extra fluid and waste from the body travel across the peritoneal membrane into the dialysis fluid. The final step is the Drain, in which the dialysis solution is drained after a few hours and replaced with new solution.
There are different types of peritoneal dialysis:
Last Revised: September 15, 2011
Author: Healthwise Staff
Medical Review: Anne C. Poinier, MD - Internal Medicine & Mitchell H. Rosner, MD - Nephrology
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