Key result
Serial praecordial mapping of Q waves and RS ratios delineates myocardial injury during acute MI.
Why the study?
The potential value of serial praecordial mapping of RS ratio changes and Q waves in acute myocardial infarction for delineating myocardial injury extent and treatment effects was unclear.
Observational (n=17)
Answers are grounded in this paper and cite their sources.
Serial praecordial mapping of ECG changes may be a valuable method for delineating the extent of myocardial injury and evaluating treatments aimed at limiting infarct size.
The theory related to the loss of R waves and appearance of Q waves in acute myocardial infarction is discussed. A method of praecordial mapping of RS ratio changes and the appearance of Q waves that occur in acute myocardial infarction is described. The serial changes in these electrocardiographic signs in 17 patients during acute infarction are recorded. The potential value of these serial measurements in delineating the extent of myocardial injury in patients with acute infarction, and evaluating the effects of any treatment aimed at limiting infarct size is discussed.
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Selwyn et al. (1977) conducted an observational in acute myocardial infarction (n=17). Praecordial mapping of Q waves and RS ratio changes was evaluated on Serial changes in Q waves and RS ratio. Serial praecordial mapping of Q waves and RS ratio changes was recorded in 17 patients during acute myocardial infarction to delineate the extent of myocardial injury.
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