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Cardiology

Real-World Use of Novel P2Y12 Inhibitors in Patients with Acute Myocardial Infarction: A Treatment Paradox.


PMID 27548273

Abstract

To assess the real-world use, clinical outcomes, and adherence to novel P2Y12 inhibitors. We evaluated 1,093 consecutive acute myocardial infarction patients undergoing a percutaneous intervention. Patients were derived from a prospective, multicenter, nationwide registry and were followed for 30 days; 381 patients (35%) received clopidogrel, 468 (43%) received prasugrel, and 244 (22%) received ticagrelor. Patients treated with clopidogrel were older and more likely to suffer from chronic renal failure and stroke and/or present with non-ST-elevation myocardial infarction (NSTEMI) (p < 0.01 for all). Independent predictors of undertreatment with novel P2Y12 inhibitors included: older age (OR 0.17; 95% CI 0.1-0.27, p < 0.0001), a prior stroke (OR 0.41; 95% CI 0.2-0.68, p = 0.008), and NSTEMI (OR 0.37; 95% CI 0.26-0.54, p < 0.0001). Novel P2Y12 inhibitors were associated with a lower incidence of cardiovascular events, major bleeding, and/or death (7.6 vs.11%, HR 0.67; 95% CI 0.43-1, p = 0.05). However, after a multivariate analysis this trend was not statistically significant. Patients discharged with ticagrelor versus thienopyridines demonstrated a higher rate of crossover to other P2Y12 inhibitors (11 vs. 5%, p = 0.03). In a real-world cohort, there was an underutilization of novel P2Y12 inhibitors which was more pronounced in higher-risk subsets that might benefit from novel P2Y12 inhibitors at least as much as other patients.

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