Mapping of complex fractionated atrial electrogram

Abstract

Software and apparatus are provided to automatically detect and map areas of complex fractionated electrograms within cardiac chambers. Electrogram signal are analyzed to count the number of complexes whose amplitude and peak-to-peak intervals meet certain criteria. Functional maps indicating average complex interval, shortest complex interval, and confidence levels are produced for display.

Description

technical field

[0001] The present invention relates to the diagnosis and treatment of cardiac arrhythmias. More specifically, the invention relates to obtaining information indicative of regional electrical activity in cardiac chambers, and to identifying and treating arrhythmic regions. Background technique

[0002] This application claims priority to Provisional Application No. 60 / 758,317, entitled "Mapping of Complex Fractionated Atrial Electrogram," filed January 12, 2006, which is hereby incorporated by reference as Reference.

[0003] Description of related fields

[0004] Cardiac arrhythmias such as atrial fibrillation are an important cause of morbidity and mortality. Two commonly assigned U.S. Patent Nos. 5,546,951 and 6,690,963 issued to Ben Haim, and PCT Application WO 96 / 05768, all of which are hereby incorporated by reference, disclose methods for detecting electrical properties of cardiac tissue such as A method of local activity time as a function of pre...

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