Mapping Atrial Fibrillation in 2020: Key Updates, Emerging Techniques, Unresolved Issues-Contact Activation Mapping: Global or Simultaneous?

Video Transcription

Video Summary

In this talk, Atul Verma discusses the contact activation mapping for atrial fibrillation using the CardoFinder module. This module takes recorded electrical signals and generates static or dynamic 4D maps to assist in diagnosing cardiac arrhythmias. The system uses unipolar signal analysis for activation mapping and has built-in software to identify focal and rotational activations. The CardoFinder algorithm performs well with sensitivity and specificity in the 85% to 95% range. The majority of focal and rotational activations were found to be intermittent and not lasting throughout the entire 30-second recording. The system uses the Pentarray catheter for sequential mapping, where focal activations were found in both atria, and rotational activations were mostly near the appendage regions. Foci were more predominant and often associated with rotations. Acute termination of atrial fibrillation was more significantly associated with the ablation of focal drivers rather than rotational drivers. Overall, contact activation mapping has similarities with other mapping technologies and may be a crucial component in the treatment of atrial fibrillation.

Keywords

contact activation mapping

atrial fibrillation

CardoFinder module

unipolar signal analysis

focal and rotational activations