• R L McNamara, S C Chung, T Jernberg, D Holmes, M Roe, A Timmis, S James, J Deanfield, G C Fonarow, E D Peterson, A Jeppsson, and H Hemingway.
• Yale University School of Medicine, Cardiovascular Medicine, New Haven, CT, USA. Electronic address: robert.mcnamara@yale.edu.
• Int. J. Cardiol. 2014 Aug 1;175(2):240-7.

ObjectivesTo compare management of patients with acute non-ST segment elevation myocardial infarction (NSTEMI) in three developed countries with national ongoing registries.BackgroundResults from clinical trials suggest significant variation in care across the world. However, international comparisons in "real world" registries are limited.MethodsWe compared the use of in-hospital procedures and discharge medications for patients admitted with NSTEMI from 2007 to 2010 using the unselective MINAP/NICOR [England and Wales (UK); n=137,009], the unselective SWEDEHEART/RIKS-HIA (Sweden; n=45,069), and the selective ACTION Registry-GWTG/NCDR [United States (US); n=147,438] clinical registries.ResultsPatients enrolled among the three registries were generally similar except those in the US who were younger but had higher rates of smoking, diabetes, hypertension, prior heart failure, and prior MI than in Sweden or in UK. Angiography and percutaneous coronary intervention (PCI) were performed more often in the US (76% and 44%) and Sweden (65% and 42%) relative to the UK (32% and 22%). Discharge betablockers were also prescribed more often in the US (89%) and Sweden (89%) than in the UK (76%). In contrast, discharge statins, angiotensin converting enzyme inhibitors/angiotensin receptor blockers (ACEI/ARB), and dual antiplatelet agents (among those not receiving PCI) were higher in the UK (92%, 79%, and 71%) than in the US (85%, 65%, 41%) and Sweden (81%, 69%, and 49%).ConclusionsThe care for patients with NSTEMI differed substantially among the three countries. These differences in care among countries provide an opportunity for future comparative effectiveness research as well as identify opportunities for global quality improvement.Copyright © 2014. Published by Elsevier Ireland Ltd.

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