Key result
Digital computer simulation closely replicates clinical vectorcardiographic QRS loops in myocardial infarction.
Why the study?
The relation between the infarcted area in myocardial infarction and changes in the QRS loop was not well understood, and detailed vectorcardiographic criteria for infarction were lacking.
Answers are grounded in this paper and cite their sources.
Computer simulation of QRS loops may estimate infarct location in MI; leaves open prospective validation before routine use.
In order to investigate the relation between the infarcted area in myocardial infarction and the change of the QRS loop, the following method was tried. The normal QRS loops in 3 planes were constructed with the digital computer. Then the vector of an optional segment corresponding to infarction was diminished and the QRS loops were constructed. The comparison of the QRS loops in clinical cases and in the construction method was made and the vectorcardiographic findings to estimate the infarcted area were discussed.
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Toyama et al. (1976) studied Myocardial infarction. Digital computer simulation of QRS loops vs. Clinical vectorcardiograms was evaluated on Concordance between simulated QRS loops and clinical vectorcardiograms. A digital computer simulation method successfully constructed QRS loops that closely matched the vectorcardiographic findings of clinical cases with various types of myocardial infarction.
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