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  • Title: Pharmacokinetics of aztreonam administered i.p. in continuous ambulatory peritoneal dialysis (CAPD) patients.
    Author: Nikolaidis P, Dombros N, Alexiou P, Balaskas E, Tourkantonis A.
    Journal: Perit Dial Int; 1989; 9(1):57-9. PubMed ID: 2488183.
    Abstract:
    The pharmacokinetics of Aztreonam (AZT) administered i.p. in six stable patients undergoing continuous ambulatory peritoneal dialysis (CAPD) for end-stage renal disease (ESRD) were studied. One gram of AZT was added into a 2 L bag of dialysate (Medital-Bieffe) just prior to infusion into the peritoneal cavity. The dwell time was 8 h. The serum maximum concentration of AZT was 42.5 +/- 12.4 mg/L (mean +/- SD), achieved in 4.6 +/- 1.0 h. The elimination half-life was 2.4 +/- 0.8 h, almost equal to that found in normal subjects (1.7-2 h). The pharmacokinetic parameters of elimination, as elimination rate constant and clearance of AZT from peritoneal cavity were found 0.305 +/- 0.101 h-1 and 10.05 +/- 3.7 mL/min, respectively, while the bioavailability via the peritoneal membrane was 90.8 +/- 3.05% of administered dose. It is concluded that AZT is eliminated from dialysate at a high rate after i.p. administration and its dialysate and serum levels exceed the MIC for the majority of sensitive organisms including Pseudomonas species. Aztreonam appears to be a potentially useful antibiotic for CAPD peritonitis.
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