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Vector analysis of S-T segments using the Grant method can prevent the misinterpretation of right ventricular infarction as anteroseptal infarction.
This manuscript was written in an effort to emphasize the points made by Porter et al. (Clin Cardiol 1997; 20:971-973). Right ventricular infarction may be erroneously interpreted as an anteroseptal infarction because of elevation of the S-T segments in leads V1-V4. The two can be separated when, using the Grant method of analysis, the S-T segments are represented as vectors: the mean S-T vector is directed inferiorly, to the right, and anteriorly when there is an inferior-right ventricular infarct, and superiorly, to the left, and anteriorly when there is an anteroseptal infarction. Other aspects of right ventricular infarction are also discussed.
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J. Willis Hurst (1998) studied this question.
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