What indicates a client's understanding of the purpose of peritoneal dialysis?

Peritoneal dialysis is primarily designed to remove toxins and metabolic wastes from the body when the kidneys are unable to perform this function adequately. It utilizes the peritoneal membrane as a filter to facilitate this process. The solution introduced into the abdominal cavity draws waste products and excess fluid from the blood through diffusion and osmosis, effectively clearing harmful substances from the bloodstream.

This method does not aim to restore kidney function; rather, it serves as a supportive treatment for patients with renal failure by managing their waste products and fluid levels. While the peritoneal membrane may have some cleaning properties, its primary role is as a dialysis interface rather than an aim of treatment. Additionally, the dialysis process does not directly provide fluid for intracellular spaces, as its main focus is on waste removal. Hence, understanding that the primary function of peritoneal dialysis is to remove toxins and metabolic wastes underscores the core purpose of this therapeutic procedure.