Response Letters Regarding Article, “Masking Inferior Infarction by Anterior Myocardial Injury”

TLDR: The authors of the 4 letters to the editor raise the interesting and important issue of lead misplacement, which is indeed suggested when one compares the morphology of the P waves in the limb leads in Figure 2 against Figure 1 and Figure 3 in the authors' article.

Abstract: We thank the authors of the 4 letters to the editor for their interest in our work.1 All of the letters raise the interesting and important issue of lead misplacement, which is indeed suggested when one compares the morphology of the P waves in the limb leads in Figure 2 against Figure 1 and Figure 3 in our article. However, the authors of the letters might not have considered other elements on the ECG tracings that do not support such an interpretation. In extensive anterior myocardial injury, there is concordant ST elevation in lead I and aVL; only in high lateral MI might the ST elevation be limited to lead I and aVL. The concordance is clearly seen …