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Mapping of complex fractionated atrial electrogram

A complex fragmentation electrogram, cardiac technology, used in the diagnosis and treatment of arrhythmias

Active Publication Date: 2008-04-09
BIOSENSE WEBSTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of using a catheter containing only a single distal electrode to map a cardiac chamber is the long period required to accumulate data point-by-point at the necessary number of points required for a detailed map of the chamber as a whole

Method used

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  • Mapping of complex fractionated atrial electrogram
  • Mapping of complex fractionated atrial electrogram
  • Mapping of complex fractionated atrial electrogram

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In this embodiment, system 10 (FIG. 1) is utilized to apply the first criteria described in the section entitled "CFAE Identification." This is done by recording for a longer period of time, eg 50 seconds, and detecting two CFAE complexes within a 10 second interval at one point. Alternatively, it is also possible to detect long-term perturbations in the baseline beyond 10 seconds by recording the mean baseline and scanning the data for long-term deviations.

Embodiment 2

[0089] Reference is now made to FIG. 12, which is an illustration of a system 154 constructed and operative in accordance with an alternative embodiment of the present invention. System 106 is similar to system 10 (FIG. 1). However processor 22 now contains circuitry for impedance detection, as described in U.S. Patent Application 11 / 030,934, filed January 7, 2005, assigned to the assignee of this patent application, and its publication is hereby incorporated by reference. However, subject 21 is now wearing torso underwear 156 having a plurality of electrodes 158, typically between about 125 and 250 electrodes, arranged within torso underwear 156 to provide the front, Potential measurement of posterior and lateral aspects. Electrodes 158 are connected to processor 22 via leads 160 and cables 162 . Processor 22 is modified for receiving and processing data from torso underwear 156 .

[0090] Based on impedance measurements between a small number of endocardial points and el...

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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...

Claims

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Application Information

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IPC IPC(8): A61B5/044A61B5/0402
Inventor J·波拉思A·艾博A·特格曼K·纳德曼尼
Owner BIOSENSE WEBSTER INC
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