**4. Renal replacement therapies (RRTs)**

Equity of access to renal replacement therapy (RRT) varies between countries based on rationing and finance. Renal replacement therapy (RRT) is a therapy for patients with kidney failure that replaces kidney function (i.e., blood filtration, electrolyte homeostasis, fluid regulation, toxin removal/secretion, and filtrate transport and drainage). Currently available RRT approaches include dialysis and kidney transplantation.
