F.Babbs Charles, A Potential New Technique to Estimate the Origins of Focal Atrial Tachycardias from 12-Lead Electrocardiograms, Journal of Hypertension and Cardiology, Volume 2, Issue 1, 2016, Pages 17-22, ISSN 2329-9487, https://doi.org/10.14302/issn.2329-9487.jhc-16-931.
(https://oap-researcharticles.org/jhc/article/290)
Abstract: Background: This brief report presents a potential new technique for locating the sites of origin of focal atrial tachycardias from standard 12-lead electrocardiograms. Methods: Estimated P wave vector coordinates are derived from leads I, aVF, V1 and V2, and mapped to a three dimensional coordinate system in space. A simple graphical method is used to find the back projection of the P wave vector onto the surface of atrial muscle to estimate the most likely site of origin of the tachycardia. Results: Graphical back projection correctly identified foci of atrial tachycardias in 19 of 19 cases described in the most complete available published study. Conclusions: Clinical studies are indicated to validate this simple method for initial noninvasive evaluation of candidates for ablation therapy.
Keywords: Ablation; algorithm; foci; supraventricular tachycardia; vector