Key result
In 1D and 3D computational models, amiodarone and cisapride both prolonged the QT interval, but amiodarone uniquely reduced conduction velocity and wavelength.
Why the study?
Do amiodarone and cisapride exhibit different electrophysiological properties in simulated human ventricular models despite both prolonging the QT interval?
Population
Simulated human ventricular electrophysiology models
Design
Preclinical
Authors
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May differentiate proarrhythmic mechanisms beyond QT effects; leaves open clinical translation.
Do amiodarone and cisapride exhibit different electrophysiological properties in simulated human ventricular models despite both prolonging the QT interval?
Computational simulations demonstrate that while both amiodarone and cisapride prolong the QT interval, amiodarone uniquely alters conduction velocity and wavelength, providing mechanistic insight into their differing arrhythmogenic profiles.
Wilhelms et al. (2012) studied Arrhythmia and QT prolongation. Amiodarone and cisapride was evaluated on Electrophysiological properties including QT interval, refractory period, conduction velocity, wavelength, and vulnerable window. In 1D and 3D computational models, amiodarone and cisapride both prolonged the QT interval, but amiodarone uniquely reduced conduction velocity and wavelength.
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