“Color vectorcardiograms” recorded in 2 cases of inferior myocardial infarction

1973 
Abstract Two patients with inferior wall myocardial infarction are described in whom “color vectorcardiograms” in the horizontal plane were recorded with an apparatus we have devised. The dashes of the vector loop were colored to indicate variations in height of the deflections in the Y axis. In both cases, the early half of the QRS loop was mostly reddish in color, indicating that this segment of the loop, including its initial deflection, projected abnormally upward. Thus, the diagnosis of inferior wall myocardial infarction was made by the use of a colored vectorcardiogram in a single plane.
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