Long-Term Outcomes of Invasive vs Conservative Strategies for Older Patients With Non-ST-Segment Elevation Acute Coronary Syndromes.

Abstract

Non-ST-segment elevation acute coronary syndrome (NSTE-ACS) is a frequent cause of hospital admission in older people, but clinical trials targeting this population are scarce. The After Eighty Study assessed the effect of an invasive vs a conservative treatment strategy in a very old population with NSTE-ACS. Between 2010 and 2014, the investigators randomized 457 patients with NSTE-ACS aged≥80 years (mean age 85 years) to an invasive strategy involving early coronary angiography with immediate evaluation for revascularization and optimal medical therapy or to a conservative strategy (ie, optimal medical therapy). The primary endpoint was a composite of myocardial infarction, need for urgent revascularization, stroke, and death. The long-term outcomes are presented. After a median follow up of 5.3 years, the invasive strategy was superior to the conservative strategy in the reduction of the primary endpoint (incidence rate ratio: 0.76; 95%CI: 0.63-0.93; P=0.0057). The invasive strategy demonstrated a significant gain in event-free survival of 276days (95%CI: 151-400days; P=0.0001) at 5 years and 337days (95%CI: 123-550days; P=0.0001) at 10 years. These results were consistent across subgroups of patients with respect to major cardiovascular prognostic factors. In patients aged≥80 years with NSTE-ACS, the invasive strategy was superior to the conservative strategy in the reduction of composite events and demonstrated a significant gain in event-free survival. (The After Eighty Study: a randomized controlled trial; NCT01255540).