Mapping of complex fractionated atrial electrogram

摘要

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.

主权项

1. A method for mapping abnormal electrical activity in a heart of a living subject, comprising the steps of:
providing a catheter comprising an electrode distally disposed thereon; inserting said catheter into said heart; using said catheter and obtaining electrical signal data from respective locations of said heart using said electrode; providing a subsystem comprising:
(i) a peak detector module configured to identify voltage peaks having amplitudes within a predefined voltage range from said electrical signal data provided by said electrode of said catheter,(ii) a peak quantitation module configured to identify peak-to-peak intervals between said identified voltage peaks that occur within a predefined time range from said electrical signal data provided by said electrode of said catheter, and
wherein said subsystem is configured to automatically analyze said signal data to identify complex fractionated electrograms therein using said identified peak-to-peak intervals between said identified voltage peaks that occur within a predefined time range; and displaying on a display information derived from said signal data indicative of a spatial distribution of said complex fractionated electrograms in said heart.