Combined dialysis and plasma-exchange in acute renal failure.

Combined use of plasma-exchange and dialysis therapy in 3 different cases of acute renal failure is presented. The first is a case of acute renal failure due to rhabdomyolysis caused by hemlock poisoning. Plasma-exchange was effective in improving the signs of rhabdomyolysis and renal failure. The second is a case of acute renal failure in an IgG-kappa myeloma. After 9 sessions of plasma-exchange, performed simultaneously with CAPD, a significant fall in the plasma and urine light chains levels was obtained. After the recovery of normal renal function, CAPD was prosecuted to remove light chains. The last is a case of acute renal failure in a patient with a mesangiocapillary nephritis and a high level of circulating immune complexes (CIC). He underwent steroid therapy and daily sessions of hemodialysis, followed by plasma-exchange, which permitted a fall of the CIC level, until a normal renal function was achieved. In conclusion, plasma-exchange combined with dialysis, is an useful tool for the management of acute renal failure caused by toxic proteins.