Why the study?
Does low potassium exacerbate the arrhythmogenic electrophysiological effects of ouabain in isolated guinea-pig ventricular myocytes?
Does low potassium exacerbate the arrhythmogenic electrophysiological effects of ouabain in isolated guinea-pig ventricular myocytes?
The arrhythmogenic interaction between digitalis and low potassium is primarily driven by alterations in the current-voltage relationship that reduce the threshold for excitation.
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May explain digitalis-low K+ proarrhythmia at cellular level; leaves open translation to intact heart or clinical risk.
Aronson et al. (1988) studied this question.
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