Inotropic and chronotropic effects of antiarrhythmic agents onisolated blood-perfused canine ventricular tissue.
In the isolated blood-perfused canine ventricular tissue, antiarrhythmic agents could be classified as having: 1) positive chronotropic and inotropic effects (procainamide), 2) negative chronotropic but positive inotropic effects (quinidine), and 3) negative chronotropic and inotropic effects (lidocaine, ajmaline, diphenylhydantoin, and propranolol).
D000818:Animals; D000889:Anti-Arrhythmia Agents / Q000494:pharmacology*; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D004558:Electric Stimulation; D006339:Heart Rate / Q000187:drug effects*; D006352:Heart Ventricles / Q000187:drug effects; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D016276:Ventricular Function
D000889:Anti-Arrhythmia Agents