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1. (WO2017151347) METHODS AND SYSTEMS FOR MAPPING CARDIAC ACTIVITY

Pub. No.:    WO/2017/151347    International Application No.:    PCT/US2017/018659
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: A61B 5/00
A61B 5/0452
G06F 17/14
Applicants: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
Inventors: RELAN, Jatin S.
AFONSO, Valtino X.
Title: METHODS AND SYSTEMS FOR MAPPING CARDIAC ACTIVITY
Abstract:
Cardiac activity can be mapped by receiving an electrogram, transforming the electrogram into the wavelet domain (e.g., using a continuous wavelet transformation) to create a scalogram of the electrogram, computing at least one energy function of the scalogram, and computing at least one metric of the electrogram using the at least one energy function. The metrics of the electrogram can include, without limitation: a QRS activity duration for the electrogram; a near-field component duration for the electrogram; a far-field component duration for the electrogram; a number of multiple components for the electrogram; a slope of a sharpest component of the electrogram; a scalogram width; an energy ratio in the electrogram; and a cycle-length based metric of the electrogram.