Discussion
The major results of the study were as below:
  1. The method for AP localization with AP distribution gradient maps – separate for any specified 12-lead preexcited QRS pattern was developed and supported by a dedicated mobile application.
  2. The hypothesis that a particular 12-lead QRS morphology pattern will point to a wider area of possible AP locations, rather than to a single location was verified with the observed AP distribution patterns in a large cohort.
  3. Optimized stepwise approach for analysis of preexcited ECG was developed.