ABC | Volume 113, Nº1, July 2019

Review Article Pastore et al ECG/VCG in the current clinical practice Arq Bras Cardiol. 2019; 113(1):87-99 Figure 5 – Electro-vectorcardiographic aspects of LASFB - Fig. 4A of the previous item, left posteroinferior fascicular block (LPIFB) - Figure 5A and left anteromedial fascicular block (LAMFB) - Figure 5B. ARVC sometimes presents with an aspect similar to the RBBB, although with a very low voltage that is different from that block. It can also show an ECD aspect on the right and be slightly backwards. The presence of a negative T wave in V 1 , V 2 , V 3 and left posteriorly located in the transverse plane of the ECG/VCG is crucial for an accurate diagnosis. The ECG/VCG has been used in the follow-up of the new arrhythmia ablation procedures, as in Brugada syndrome, where it cooperates in characterizing the successful cases and differentiating them from the unsuccessful procedures. The initial and already consecrated experience of the ECG/VCG in the ventricular pre-excitation and in the ablation procedures for this syndrome has brought subsidies for the recently described observations. The Brugada syndrome has shown to be very dynamic regarding its arrhythmogenic substrate, and the ECG/VCG follow-up can be very useful to define this process. 29,30 (Figure 12). Author contributions Conception and design of the research: Pastore CA, Samesima N, Facin ME; Acquisition of data: Pastore CA, Samesima N, Pereira Filho HG, Madaloso BA, Facin ME; Analysis and interpretation of the data and Critical revision of the manuscript for intellectual content: Pastore CA, Samesima N, Pereira Filho HG, Tobias NMMO, Madaloso BA, Facin ME; Writing of the manuscript: Pastore CA, Samesima N, Madaloso BA. Potential Conflict of Interest No potential conflict of interest relevant to this article was reported. Sources of Funding There were no external funding sources for this study. 92