Moxalactam kinetics during chronic ambulatory peritoneal dialysis

Moxalactam kinetics in renal failure were followed in eight patients undergoing chronic ambulatory peritoneal dialysis (CAPD) after a single 1-gm IV infusion. Elimination t 1/2 was 16.7 +/- 2.1 hr, with an apparent volume of distribution of 0.21 +/- 0.01 l/kg and plasma clearance of 10.6 +/- 2 ml/min. In 24 hr, 17.4 +/- 3.1% of the dose was present in the dialysis fluids, and 14.6 +/- 5.7% was excreted in the urine. Renal and peritoneal clearance values were thus 2.3 +/- 1.1 and 2.7 +/- 0.5 ml/min. Peritoneal concentrations were high (22.7 +/- 2.2 micrograms/ml). A recommended dosage schedule is proposed on the basis of moxalactam kinetics during CAPD.