Preinfarct Health Status and the Use of Early Invasive Versus Ischemia-Guided Management in Non–ST-Elevation Acute Coronary Syndrome

Abstract

Early invasive management improves outcomes in non-ST-elevation myocardial infarction (NSTEMI). The association between preinfarct health status and the selecting patients for early invasive management is unknown. The Prospective Registry Evaluating outcomes after Myocardial Infarctions: Events and Recovery and Translational Research Investigating Underlying disparities in acute Myocardial infarction Patients' Health status are consecutive US multicenter registries, in which the associations between preinfarct angina frequency and quality of life (both assessed by the Seattle Angina Questionnaire on admission) and the Global Registry of Acute Coronary Events (GRACE) risk score and referral to early invasive management (coronary angiography within 48 hours) were evaluated using Poisson regression, after adjusting for site, demographics, and clinical and psychosocial variables. Of 3,768 patients with NSTEMI, 2,182 (57.9%) patients were referred for early invasive treatment. Patients with excellent, good, or very good baseline angina-specific quality of life, respectively, were more likely to receive early angiography, even after adjustment, as compared with patients reporting poor baseline quality of life because of angina (62.1.0%, 60.9%, 59.6%, vs 51.2%; adjusted relative risk [RR] = 1.09, 95% confidence interval [CI] 1.04 to 1.16; RR = 1.13, 95% CI 1.01 to 1.27; RR 1.14, 95% CI 0.99 to 1.31, respectively). Finally, patients with a GRACE score in the highest risk decile (199.5 to <321.4) had significantly lower rates of early invasive treatment (42.7%) than patients in the lowest decile of risk (67.6%; adjusted RR for continuous GRACE score per SD [1 SD = 40 points], 0.96, 95% CI 0.92 to 0.99, p = 0.019). In conclusion, in this real-world NSTEMI cohort, patients with the highest mortality risk and worst health status were less likely to be referred for early invasive management. Further work is needed to understand the role of preinfarct health status and in-hospital treatment strategy.