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  • Title: Contemporary Patterns of Early Coronary Angiography Use in Patients With Non-ST-Segment Elevation Myocardial Infarction in the United States: Insights From the National Cardiovascular Data Registry Acute Coronary Treatment and Intervention Outcomes Network Registry.
    Author: Malta Hansen C, Wang TY, Chen AY, Chiswell K, Bhatt DL, Enriquez JR, Henry T, Roe MT.
    Journal: JACC Cardiovasc Interv; 2018 Feb 26; 11(4):369-380. PubMed ID: 29471951.
    Abstract:
    OBJECTIVES: The study sought to characterize patient- and hospital-level variation in early angiography use among non-ST-segment elevation myocardial infarction (NSTEMI) patients. BACKGROUND: Contemporary implementation of guideline recommendations for early angiography use in NSTEMI patients in the United States have not been described. METHODS: The study analyzed NSTEMI patients included in ACTION (Acute Coronary Treatment and Intervention Outcomes Network) registry (2012 to 2014) who underwent in-hospital angiography. Timing of angiography was categorized as early (≤24 h) vs. delayed (>24 h). The study evaluated factors associated with early angiography, hospital-level variation in early angiography use, and the relationship with quality-of-care measures. RESULTS: A total of 79,760 of 138,688 (57.5%) patients underwent early angiography. Factors most strongly associated with delayed angiography included weekend or holiday presentation, lower initial troponin ratio values, higher initial creatinine values, heart failure on presentation, and older age. Median hospital-level use of early angiography was 58.5% with wide variation across hospitals (21.7% to 100.0%). Patient characteristics did not differ substantially across hospitals grouped by tertiles of early angiography use (low, middle, and high). Hospitals in the highest tertile tended to more commonly use guideline-recommended medications and had higher defect-free care quality scores. CONCLUSIONS: In contemporary U.S. practice, high-risk clinical characteristics were associated with lower use of early angiography in NSTEMI patients; hospital-level use of early angiography varied widely despite few differences in case mix. Hospitals that most commonly utilized early angiography also had higher quality-of-care metrics, highlighting the need for improved NSTEMI guideline adherence.
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