Reelevation of ST Segment on Precordial Mapping in Natural Time Course Following Acute Anterior Myocardial Infarction : Diagnostic and Therapeutic Procedures in Acute Myocardial Infarcton

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Serial recordings of ST segmen_t mapping were performed in 15 patients with acute anterior myocardial infarction. Reelevation of ST segment was observed in all cases between 12 hours and one week after infarction without clinical evidence of reinfarction. There was significant correlation between the magnitude of the sum of ST reelevation (ΣST) and time to the peak of ST reelevation. The higher was ΣST at the peak, the later was the appearance of the peak of ST reelevation. ΣST recorded between 24 and 72 hours after infarction correlated with the extent of abnormal Q (NQ) in the precordial mapping as well as the percent of abnormally contracting segment (%ACS) on left ventricular angiography examined after 4 weeks following infarction. However, there was no correlation between ΣST recorded at 12 hours after infarction and NQ studied at 4 weeks after infarction. The results indicate that the magnitude of ΣST changes in time during the course after infarction and that the time of recording is important when ΣST is used for the estimation of infarct size. Reelevation of ST segment should be considered in the study of therapeutic intervention in acute myocardial infarction.
社団法人日本循環器学会の論文
1981-05-20