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  • Title: Effective plasma concentrations of aprindine in canine ventricular arrhythmias.
    Author: Hashimoto K, Komori S, Ishii M, Kamiya J.
    Journal: J Cardiovasc Pharmacol; 1984; 6(1):12-9. PubMed ID: 6199593.
    Abstract:
    Antiarrhythmic effects of aprindine were examined using three canine ventricular arrhythmia models (induced by digitalis, adrenaline, and two-stage coronary ligation), and the minimum effective plasma concentration of aprindine was determined for each arrhythmia model. Aprindine suppressed all three arrhythmias, and the minimum effective plasma concentrations for arrhythmias induced by digitalis, adrenaline, and 24-h and 48-h coronary ligation were 0.8 +/- 0.4, 1.0 +/- 0.4, 1.6 +/- 0.3, and 3.1 +/- 0.5 micrograms/ml, respectively (mean +/- SD, n = 6-7). The minimum effective plasma concentrations of aprindine for digitalis- and adrenaline-induced arrhythmias were significantly lower than those for coronary ligation-induced arrhythmias. Oral aprindine was also effective in suppressing both the 24- and 48-h coronary ligation-induced arrhythmias. Aprindine had a hypotensive effect when it was given intravenously, but this effect was not observed when it was given orally. The correlations between the aprindine plasma concentrations and the antiarrhythmic effects were not very strong and indicated individual variations in sensitivity to aprindine.
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