Estimation of conduction velocity vector fields from 504-channel epicardial mapping data

Academic Article

Abstract

  • Local velocity vector fields describing the propagation of epicardial electrical activity were estimated using a new automated method. The method relies on fitting polynomial surfaces to the space-time coordinates of cardiac activity and analytically computing derivatives. The direction and speed of propagation were found during sinus rhythm, pacing, and ventricular fibrillation (VF) in pigs using data from a 21 × 24 array of epicardial electrodes. The results are displayed as vector fields and are used to characterize propagation quantitatively during episodes of complex VF.
  • Authors

    Author List

  • Bayly PV; Kenknight BH; Rogers JM; Ideker RE; Smith WM
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  • 133
  • End Page

  • 136
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