Why the study?
Does ouabain administration alter the relationship between stimulation frequency and automaticity in canine Purkinje fibers?
Population
Canine Purkinje-papillary preparations
Comparison
Ouabain superfusion with transient stimulation… vs Normal Tyrode's solution (baseline state)
Design
Preclinical
Authors
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May underlie digitalis toxicity arrhythmias; leaves open translation from canine Purkinje fibers to patients.
Does ouabain administration alter the relationship between stimulation frequency and automaticity in canine Purkinje fibers?
Ouabain alters the electrophysiological response to rapid stimulation in Purkinje fibers, explaining the frequency-dependent enhanced automaticity and ventricular arrhythmias seen in digitalis toxicity.
Hogan et al. (1973) studied this question.
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