The two most widely used electroanatomic mapping systems utilize contact-based catheter localization technology that is magnetic-based or impedance-based. Non-contact based mapping systems use balloon catheters with multi-electrode arrays. Non-contact technology allows analysis of the activation in non-sustained, polymorphic, or hemodynamically intolerant tachycardia. Despite their existence, these mapping techniques are still deficient. The present techniques simply are incapable of (i) identifying patterns of electrical activity, and by virtue of that, (ii) identifying points for potential ablation, with sufficient desired accuracy. Better identification and analysis of cardiac electrical activity is desired.
The invention provides a catheter and techniques to map and analyze cardiac electrical activity through the use of a multiple point basket type catheter capable of simultaneously mapping a three dimensional (3D) region of a subject, specifically one or more chambers of the heart. Potential sources of fibrillation and/or arrhythmia within the chamber and/or an alarm condition indicating the presence or onset of fibrillation and/or arrhythmia are identifiable from the mapping.