DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Home dialysis catheter. Close up of the peritoneal catheter of an elderly woman dialysing at home. Dialysis is a technique used to remove waste products from the blood and excess fluid from the body as treatment for kidney failure. The method of dialysis used here is Continuous Ambulatory Peritoneal Dialysis (CAPD).In CAPD, fluid is infused directly into the peritoneal cavity via the plastic catheter. The high concentration of waste products in the patient's body diffuse across the natural filter (peritoneum) towards the lower concentration in the dialysis fluid. The dialysis fluid removes the impurities, which pass into a waste dialysis bag.
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