title: Haemodialysis does not affect the pharmacokinetics of nifedipine.
abstract: To establish dosage recommendations in patients with end-stage renal disease undergoing chronic haemodialysis, nifedipine kinetics were studied between and during haemodialysis sessions. In eight patients, during the interdialytic period, peak plasma concentrations of nifedipine (29-332 ng/ml) were reached 0.5-1.0 h after administration of a single 10 mg oral dose. Elimination half-life and oral plasma clearance were respectively 2.6 +/- 0.5 h and 1 176 +/- 412 ml/min. Nifedipine plasma protein binding was decreased in uraemic patients (88.8 +/- 0.3% vs 94.4 +/- 0.1%) but not affected by haemodialysis. Removal by haemodialysis was low: the dialyser extraction ratio and the dialysis clearance were respectively 2.3 +/- 0.8% and 2.8 +/- 0.9 ml/min.
mesh_terms: D000328:Adult; D000368:Aged; D001798:Blood Proteins / Q000378:metabolism; D005260:Female; D006801:Humans; D007700:Kinetics; D008297:Male; D008433:Mathematics; D008875:Middle Aged; D008954:Models, Biological; D009543:Nifedipine / Q000097:blood*; D011485:Protein Binding; D006435:Renal Dialysis
chemical_list: D001798:Blood Proteins; D009543:Nifedipine