The only medical use of lanthanum is to supplement this process, since it is otherwise ineffective at preventing hyper·phospha·temia. A polymer of glucose marketed as Extraneal provides turgor when this process is done inside the peritoneum (“pair-uh-toe-NEE-um”). This process should reduce the BUN (20[1])(“B-U-N”) to below (20[1])50 (20[1])milligrams per deciliter (0[1])(“DESS-uh-liter”) and would be recommended for patients who have low GFRs and poor creatinine (“cree-AH-tuh-neen”) clearance. (20[6])To maintain (20[1])(*) iso·tonicity, this process must re-add (10[2]0[1])salt to the liquid (10[2])that does not pass through (0[1])an ultra-fine membrane. (10[3]0[1])U-shaped tubing (0[1])used for this process (0[1])defines the osmotic pressure. (0[2])This medical procedure reduces urea levels after (10[2])renal failure. (10[2]0[1])For 10 points, name this process of artificially (10[1])filtering blood (10[1])in patients (10[1])with kidney disease. (10[3])■END■ (10[5]0[1])