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  • Title: Effect of coronary artery ligation on the pharmacokinetics of N-acetylprocainamide in dogs.
    Author: Lai CM, Reynolds RD, Kamath BL, Calzadilla S, Gupta SD, Look ZM, Yacobi A.
    Journal: Res Commun Chem Pathol Pharmacol; 1980 Aug; 29(2):369-72. PubMed ID: 6158076.
    Abstract:
    The effect of ligation of the left anterior descending and septal coronary arteries on the distribution of N-acetylprocainamide (NAPA) was studied in 13 mongrel dogs. The animals received a rapid i.v. infusion of 20 mg/kg NAPA.HCl. In 6 dogs the arteries were ligated simultaneously 10 min after administration of the drug. The other dogs received the same dose without anesthesia or surgery and served as control. Coronary ligation procedure resulted in a significantly higher initial plasma concentration of NAPA, presumably because of a significant decrease in the apparent volume of central compartment. The biologic half-life, the apparent volume of distribution and the total clearance of the drug remained unchanged in both groups of animals. The results of this study suggest that while the pharmacokinetics of elimination of NAPA remain unchanged, the distribution and the effective plasma concentration might be altered by the coronary ligation procedure under anesthesia.
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