Abstract 15371: Risk of Early Recurrent Myocardial Infarction After Index Myocardial Infarction Stratified by Index Treatment Strategy

Abstract

Introduction: Survivors of Myocardial Infarction (MI) remain at increased risk for another cardiovascular event. The purpose of our study was to assess the role of index treatment strategy in developing early recurrent MI after acute MI. Methods: We analyzed all cases of MI at a single quaternary care medical center from January 1 st , 2010 to January 1 st , 2017, and identified all cases of recurrent MI within 90 days of index MI. Early recurrent MI cases were further stratified depending on the treatment strategy for index MI. Reinfarctions were also stratified according to the time of readmission into early (0-30 days after discharge) and late (30-90 days after discharge) time periods. Results: We identified 6,626 patients admitted with an acute MI and 168 cases of recurrent MI within 90 days of discharge. Among the index MI patients, 4354 (66%) patients underwent revascularization whereas 2272 (34%) underwent medical management. An unadjusted comparison of the risk of readmission among the 3 different revascularization strategies showed that the CABG group appeared to have the lowest risk of readmission with a recurrent MI, and there was no significant difference in the late risk of readmission between PCI and CABG groups (P=0.8). The medically managed group had the highest late risk of readmission with a recurrent MI. Conclusions: The risk of readmission with a recurrent MI is higher in patients who undergo medical management for index MI. Aiming to improve the standard of care in these patients should be the focal point of interest to curb these reinfarctions.