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  • Title: [Pharmacokinetics and Antiarrhythmic effects of Prajmalium Bitartrate].
    Author: Trompler AT, Woodcock BG, Bussmann WD.
    Journal: Arzneimittelforschung; 1983; 33(3):436-9. PubMed ID: 6683519.
    Abstract:
    8 patients with ventricular premature contractions were treated with prajmalium bitartrate (Neo-Gilurytmal) 20 mg q.i.d. The electrocardiograms were continuously monitored by a computerized arrhythmia monitoring system. For definition of the drug's pharmacokinetic properties plasma concentrations were determined. 7 patients showed a marked arrhythmia reduction. Mean ventricular premature contraction frequency was significantly reduced 6 h after onset of treatment, maximum arrhythmia suppression to 34% of control was observed after 24 h of treatment. The correlation of antiarrhythmic response and plasma concentrations was good. Mean plasma concentrations during steady state conditions were 218 ng/ml. Plasma half-life was determined 7.3 h. The lower limit of therapeutic plasma concentrations was between 43 and 145 ng/ml. A mean total clearance of 344 ml/min indicates a low hepatic extraction of prajmalium bitartrate. Moreover, the distribution volume of 204 l suggests a high tissue affinity of the drug.
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