Outcomes According to Cardiac Catheterization Referral and Clopidogrel Use Among Medicare Patients With Non-ST-Segment Elevation Myocardial Infarction Discharged Without In-hospital Revascularization.
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BACKGROUND: While use of P2Y12 receptor inhibitor is recommended by guidelines, few studies have examined its effectiveness among older non-ST-segment elevation myocardial infarction patients who did not undergo coronary revascularization. METHODS AND RESULTS: We included unrevascularized non-ST-segment elevation myocardial infarction patients ≥65 years discharged home from 463 ACTION Registry-GWTG hospitals from 2007 to 2010. Rates of discharge clopidogrel use were described for patients with no angiography, angiography without obstructive coronary artery disease (CAD; ≥50% stenosis in ≥1 vessel), and angiography with obstructive CAD. Two-year outcomes were ascertained from linked Medicare data and included composite major adverse cardiac events (defined as all-cause death, myocardial infarction readmission, or revascularization), and individual components. Outcomes associated with clopidogrel use were adjusted using inverse probability-weighted propensity modeling. Of 14 154 unrevascularized patients, 54.7% (n=7745) did not undergo angiography, 10.6% (n=1494) had angiography without CAD, and 34.7% (n=4915) had angiography with CAD. Discharge clopidogrel was prescribed for 42.2% of all unrevascularized patients: 37.8% without angiography, 34.1% without obstructive CAD at angiography, and 51.6% with obstructive CAD at angiography. Discharge clopidogrel use was not associated with major adverse cardiac events in any group: without angiography (adjusted hazard ratio [95% CI]: 0.99 [0.93-1.06]), angiography without CAD (1.04 [0.74-1.47]), and angiography with CAD (1.12 [1.00-1.25], Pinteraction=0.20). CONCLUSIONS: We found no association between discharge clopidogrel use and long-term risk of major adverse cardiac events among older, unrevascularized non-ST-segment elevation myocardial infarction patients. Clopidogrel use in this population requires further prospective evaluation.
SubjectP2Y12 receptor inhibitor
unrevascularized non–ST‐segment elevation myocardial infarction patients
Aged, 80 and over
Coronary Artery Disease
Platelet Aggregation Inhibitors
Purinergic P2Y Receptor Antagonists
Referral and Consultation
Published Version (Please cite this version)10.1161/JAHA.115.002784
Publication InfoHess, Connie Ng; Hellkamp, Anne; Roe, Matthew Todd; Thomas, Laine Elliott; Scirica, BM; Peng, SA; ... Wang, Tracy (2016). Outcomes According to Cardiac Catheterization Referral and Clopidogrel Use Among Medicare Patients With Non-ST-Segment Elevation Myocardial Infarction Discharged Without In-hospital Revascularization. J Am Heart Assoc, 5(3). pp. e002784. 10.1161/JAHA.115.002784. Retrieved from http://hdl.handle.net/10161/14992.
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Assistant Professor of Medicine
Fred Cobb, M.D. Professor of Medicine
Dr Peterson is the Fred Cobb Distinguished Professor of Medicine in the Division of Cardiology, a DukeMed Scholar, and the Past Executive Director of the Duke Clinical Research Institute (DCRI), Durham, NC, USA. Dr Peterson is the Principal Investigator of the National Institute of Health, Lung and Blood Institute (NHLBI) Spironolactone Initiation Registry Randomized Interventional Trial in Heart Failure With Preserved Ejection Fraction (SPIRRIT) Trial He is also the Principal I
Professor of Medicine
My clinical activities focus upon general, preventive, and acute care cardiology. I round regularly on the inpatient general cardiology and coronary care unit (CCU) services and i have a particular interest in the treatment and management of patients with acute myocardial infarction and cardiogenic shock. In my outpatient clinic, I care for patients with a variety of cardiovascular conditions include chronic coronary artery disease, hypertension, hyperlipidemia, atrial fibrillation,
Associate Professor of Biostatistics and Bioinformatics
Measurement error, longitudinal data, joint modeling
Associate Professor of Medicine
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