Transfer function estimation of the right ventricle of canine heart

Abstract

Modern noncontact mapping technique allows for identifying arrhythmia focus without the laborious sequential contact mapping techniques currently in practice. Pacing the canine heart in the laboratory was achieved by positioning an electrode catheter at multiple endocardial sites and epicardial sites and the corresponding virtual electrograms were recorded with the EnSite system. The endocardial and epicardial paced virtual electrograms from the juxtaposing sites allows for an estimate of the transfer function of the myocardium in different positions of the right ventricles of a canine heart. The transfer function estimation will aid in better mathematical modeling of myocardium and could be sensitive measure of myocardial homogeneity and arrhythmic foci localization.