Why the study?
Does procainamide reduce automatic and triggered impulse initiation in isolated canine cardiac Purkinje fibers?
Population
Isolated preparations of canine cardiac Purkinje fibers
Comparison
Procainamide (40 mg/L) vs Baseline/control conditions; lidocaine and…
Design
Preclinical
Authors
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May limit procainamide use against catecholamine-driven or triggered arrhythmias; leaves open translation from canine Purkinje models to clinical VT.
Does procainamide reduce automatic and triggered impulse initiation in isolated canine cardiac Purkinje fibers?
Procainamide effectively reduces normal and abnormal automaticity but is largely ineffective against catecholamine-enhanced automaticity and triggered activity, providing a mechanistic explanation for procainamide-refractory ventricular tachycardias.
Kenneth H. Dangman (1988) studied this question.
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