Peritoneal dialysis clearance of cimetidine

Peritoneal dialysis clearance of cimetidine was determined in two patients undergoing peritoneal dialysis treatment. The peritoneal dialysis clearance of cimetidine was approximately 10 ml./min. under optimal dialyzing conditions. The average cimetidine to creatinine extraction ratio was 0.45, which represents significant peritoneal dialyzability. The amount of cimetidine removed, however, constituted only a small fraction of the total administered dose. Therefore, only minor dose adjustments may be necessary during peritoneal dialysis treatment.