What is peritoneal dialysis?

Peritoneal dialysis is a renal replacement therapy that utilizes the peritoneum, which is the lining of the abdominal cavity, as a natural filter to remove waste products and excess fluids from the blood. During this procedure, a sterile dialysis solution is introduced into the abdominal cavity through a catheter. This solution absorbs toxins and other waste products from the blood vessels in the peritoneal lining, and after a designated dwell time, the fluid is drained away, effectively cleansing the blood. This method provides an alternative to hemodialysis, allowing patients to perform kidney function support at home or in other settings without the need for machine assistance.

In contrast, other options discuss different processes or treatments. The second option highlights a machine-assisted method, which applies to hemodialysis rather than peritoneal dialysis. The third option refers to medication management, which may complement kidney care but does not directly involve the dialysis process itself. Lastly, the fourth option mentions a surgical procedure to replace kidney function, which pertains to kidney transplantation rather than the dialysis techniques. Each of these options describes distinct aspects of renal care, making the first choice the most accurate definition of peritoneal dialysis.