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Dofetilide is a class III drug whose use needs to be monitored due to the possible occurrence of Torsades de Pointes (TdP). The mechanisms are unclear but research suggests that both early-afterdepolarizations (EAD) and increased dispersion of action potential duration (APD) might be involved. Importantly, drug-induced TdP is more common in women, possibly due to higher L-type calcium current (ICaL) levels. Our goal is to use numerical simulation in order to investigate pro-arrhythmic mechanisms of dofetilide in human by characterizing its effects on APD, APD dispersion and EAD formation for varying doses and ICaL levels. © 2012 CCAL.

Type

Conference paper

Publication Date

01/12/2012

Volume

39

Pages

861 - 864