In peritoneal dialysis, what fluid is typically introduced to the peritoneal cavity?

In peritoneal dialysis, the fluid that is introduced into the peritoneal cavity is specifically designed to facilitate the dialysis process and is known as dialysate fluid. This fluid contains a balanced mixture of electrolytes and glucose, allowing for the diffusion of waste products from the blood into the dialysate while simultaneously helping to maintain the patient's electrolyte balance and osmotic pressure.

Dialysate fluid is crucial because it is tailored to optimize the dialysis process by creating the right concentration gradients for waste removal. It allows for the exchange of toxins and excess fluids between the blood vessels and the peritoneal cavity, ultimately aiding in the purification of blood when kidneys are unable to function effectively. The other options, while they may have some utility in medical contexts, do not serve the purpose needed for effective dialysis treatment.