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  • Title: Propafenone disposition kinetics in cardiac arrhythmia.
    Author: Connolly S, Lebsack C, Winkle RA, Harrison DC, Kates RE.
    Journal: Clin Pharmacol Ther; 1984 Aug; 36(2):163-8. PubMed ID: 6744775.
    Abstract:
    Propafenone disposition kinetics were studied after intravenous and oral doses in patients with ventricular arrhythmias. Plasma concentration-time data were fit to a two-compartment model for all but one patient, whose data required fitting to a three-compartment model. The model-independent calculated values of clearance, steady-state volume of distribution, and terminal t1/2 were 11.2 +/- 4.8 ml/min/kg, 3.6 +/- 2.1 l/kg, and 5.0 +/- 3.6 hr. After 5 days on oral propafenone, elimination t1/2 was 6.2 +/- 3.3 hr. The longer t1/2s and the estimates of steady-state bioavailability above 100% suggests that clearance decreases during chronic oral dosing. Considerable intersubject variability was noted in all disposition parameters.
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