Adaptation of the standard 12-lead ECG system dedicated to the analysis of atrial fibrillation
Objective: To design a lead system aimed at studying atrial fibrillation, while being anchored to the standard 12-lead system. Methods: The location of four of the six precordial electrodes was optimized while leaving the remaining 5 of the 9 electrodes of the standard 12-lead system in place. The analysis was based on episodes of 11 different variants of AF simulated by a biophysical model of the atria positioned inside an inhomogeneous thorax. The optimization criterion used was derived from the singular value decomposition of the data matrices. Results: While maintaining VR, VL, VF, V1 and V4, the four new electrode positions increased the ratio of the eighth and the first singular values of the data matrices of the new configuration about five-fold compared to that of the conventional electrode positions. Conclusion: The adapted lead system produces a more complete view on AF compared to that of the conventional the standard 12-lead system.