Circulation: Arrhythmia And Electrophysiology On The Beat

Dr Paul Wang:                   Welcome to the monthly podcast, On the Beat, for Circulation: Arrhythmia and Electrophysiology. I'm Dr Paul Wang, editor-in-chief, with some of the key highlights from this month's issue. Dr Paul Wang:                   In our first paper, Farhad Pashakhanloo and associates examine the three-dimensional structure of the healed infarct and the ventricular tachycardia reentrant pathways in high-resolution models of infarcted porcine hearts. The authors used ex vivo late gadolinium enhancement in diffusion tensor MRI data of eight chronically infarcted porcine hearts at sub-millimeter resolution in a novel scar map thickness metric to reveal the heterogeneous organization of infarct. The authors use simulation to model ventricular tachycardia pathways. They found that a surviving sub-endocardial tissue later of varying thickness less than or equal to 2.2 millimeters surrounding the scar participated in the majority of ventricular tachycardias. The authors concluded that these anal