Temporal Trends and Outcome of Patients with Acute Coronary Syndrome and Prior Myocardial Infarction

Author:

Orvin Katia,Shechter AlonORCID,Zahger Doron,Shklovski Vitaly,Ovdat Tal,Beigel Roy,Kornowski RanORCID,Eisen Alon

Abstract

Patients who have previously had a myocardial infarction (MI) are considered a high-risk group with increased risk for cardiovascular (CV) events. During the last decade, the outcome of acute coronary syndrome (ACS) patients has improved due to advances in medical therapy and interventional techniques. We aimed to examine temporal trends and outcomes of patients with prior MI admitted due to ACS from the Acute Coronary Syndrome Israeli Survey (ACSIS). Included were 16,934 ACS patients, of whom 31.4% had prior MI. For temporal trend analysis, the cohort was divided into an early period (2000–2008) and late period (2010–2018). For patients with prior MI, patients in the late period had a higher rate of CV risk factors and were treated more frequently with revascularization and guidelines-directed medical therapy. Recurrent MI (6.7% vs. 12%, p < 0.001), MACE (10.6% vs. 21%, p < 0.001) and 1-year mortality (10.7% vs. 14.6%, p < 0.001) were significantly lower in the late period. However, the mortality rate for patients with prior MI remained higher compared with patients without prior MI (10.7% vs. 6.8% p < 0.001) with an overall higher mortality rate in the STEMI group. Thus, despite significant improvement in outcome measures in the contemporary era, ACS patients with prior MI are still at increased risk for recurrent ischemic CV events and mortality.

Publisher

MDPI AG

Subject

General Medicine

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