Andrés Ricardo Pérez-Riera
◽
Raimundo Barbosa-Barros
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Rodrigo Daminello-Raimundo
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Luiz Carlos de Abreu
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Kjell Nikus
:
Until the mid-1980s, it was believed that the vectorcardiogram (VCG) presented a greater specificity,
sensitivity and accuracy in comparison to the 12-lead electrocardiogram (ECG), in the cardiology diagnosis. Currently,
the VCG still is superior to the ECG in specific situations, such as in the evaluation of myocardial infarctions when
associated with intraventricular conduction disturbances, in the identification and location of accessory pathways in
ventricular preexcitation, in the differential diagnosis of patterns varying from normal of electrical axis deviation, in the
evaluation of particular aspects of Brugada syndrome, Brugada phenocopies, concealed form of arrhythmogenic right
ventricular cardiomyopathy and zonal or fascicular blocks of the right bundle branch on right ventricular free wall .VCG
allows us to analyze the presence of left septal fascicular block more accurately than ECG and in the diagnosis of the
interatrial blocks and severity of some chambers enlargements. The three-dimensional spatial orientation of both the atrial
and the ventricular activity provides a far more complete observation tool than the linear ECG. We believe that the
ECG/VCG binomial simultaneously obtained by the technique called electro-vectorcardiography (ECG/VCG) brought a
significant gain for the differential diagnosis of several pathologies. Finally, in the field of education and research, VCG
provided a better and more rational tridimensional insight into the electrical phenomena that occurs spatially, and
represented an important impact on the progress of electrocardiography.
The vectorcardiogram and the main dromotropic disturbances
