Coherence analysis of multichannel epicardial electrograms for quantification of organization during ventricular fibrillation

Samir S. Shah, Peng Wie Hsia, Ralph J. Damiano

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

A new method, which uses Magnitude-Squared Coherence (MSC) spectrums between unipolar electrograms recorded from the epicardial surface, is presented to characterize the organization of electrical activity in the myocardial muscles. In a canine study, unipolar electrograms were recorded from 112 epicardial sites during both Normal Sinus Rhythm (NSR) and Ventricular Fibrillation (VF). As a result, average coherence at dominant frequencies during NSR was found to be 0.92 ± 0.01, and during VF 0.41 ± 0.03. Further, the average MSC between electrograms from two sites was found to decrease with increasing distance during NSR and VF.

Original languageEnglish
Pages (from-to)13-14
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume16
Issue numberpt 1
StatePublished - Dec 1 1994
Externally publishedYes
EventProceedings of the 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 (of 2) - Baltimore, MD, USA
Duration: Nov 3 1994Nov 6 1994

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