What is the primary purpose of peritoneal dialysis?

The primary purpose of peritoneal dialysis is to utilize the peritoneum, which is the lining of the abdominal cavity, as a natural filter for waste products and excess fluid from the blood. In this process, a dialysis solution is introduced into the abdominal cavity through a catheter, where it absorbs waste materials and toxins from the blood vessels that permeate the peritoneal lining. After a specified dwell time, the solution, now containing these impurities, is drained out, effectively cleansing the blood.

This method is particularly beneficial for patients with chronic kidney disease or those whose kidneys are unable to perform adequately. It offers a way to maintain a better balance of electrolytes and remove harmful substances without the need for hemodialysis, which requires direct access to the bloodstream and can be more invasive.