Cited by 2Acute Myocardial Infarction ResearchAntiplatelet Therapy and Cardiovascular DiseasesCoronary Interventions and Diagnostics

Are adverse events following an invasive strategy in patients with non‐ST‐segment elevation acute coronary syndromes more frequent at US sites versus Non‐US sites? analysis from the ACUITY trial

Tobbia, Patrick, Brodie, Bruce R., Stuckey, Thomas, McLaurin, Brent T., Cox, David A., Fahy, Martin, Xu, Ke, Mehran, Roxana +1 more·2013·Catheterization and Cardiovascular Interventions

Abstract

Objective: To compare outcomes between US and non‐US (OUS) sites in patients with non ST‐elevation acute coronary syndromes (NSTEACS) and to evaluate potential reasons for differences in outcomes. Background: There are little data comparing outcomes at US versus OUS sites in patients with NSTEACS managed with an invasive strategy. Methods: The ACUITY trial randomized 13,819 patients with NSTEACS in 17 countries to an invasive approach with one of three strategies: (1) heparin plus glycoprotein platelet inhibitors (GPI), (2) bivalirudin plus GPI, or (3) bivalirudin alone. Results: US patients were more often female, were younger, heavier, and had more diabetes, prior myocardial infarction (MI), and prior bypass surgery. US patients were less often treated with percutaneous coronary intervention but had more frequent drug‐eluting stent use. US patients had lower mortality and higher MI rates at 30 days and 1 year and higher composite ischemic outcome at 30 days. After adjusting for differences in baseline variables, US patients had higher rates of MI and composite ischemic outcome at 30 days and higher rates of MI at 1 year {HR [95% confidence interval (CI)] = 1.36 [1.18–1.56], P < 0.0001} with no differences in mortality. There were no differences in treatment effects comparing bivalirudin with the other strategies between US and OUS sites. Conclusions: US versus OUS patients with NSTEACS had higher adjusted rates of MI and ischemia. The reasons for these differences are not clear but may be due to unmeasured confounders, different thresholds for event reporting, or valid differences in systems of care which may impact outcomes. © 2012 Wiley Periodicals, Inc.

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Crossref · 10.1002/ccd.24587

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  • International trials of various pharmacotherapies have sometimes found discordant results in patients enrolled in the United States than seen in overall trial results.

    “International trials of various pharmacotherapies have sometimes found discordant results in patients enrolled in the United States than seen in overall trial results.19–32”
  • The reasons for discordant US results range from low numbers of patients enrolled in the United States to potential differences in background medical management or in patient risk profiles.

    “The reasons range from low numbers of patients enrolled in the United States to potential differences in background medical management or in patient risk profiles.”

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Authors
Tobbia, P., Brodie, B. R., Stuckey, T., McLaurin, B. T., Cox, D. A., Fahy, M., Xu, K., Mehran, R., & Stone, G. W.
Affiliations
  • Cone Health (US)
  • AnMed Health (US)
  • Lehigh Valley Health Network (US)
  • Columbia University Irving Medical Center (US)
Corresponding author
Brodie, Bruce R.
Venue
Catheterization and Cardiovascular Interventions
Publisher
Wiley
Published
2013-03-09
Volume
82
Issue
4
Pages
E365-74
ISSN
  • 1522-1946 (ISSN-L)
  • 1522-726X
OpenAlex
W1549769145
Cited by
2
References
18
Citations by year
2019: 1 · 2016: 1
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Catheterization and Cardiovascular Interventions (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Acute Myocardial Infarction Research
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Antiplatelet Therapy and Cardiovascular Diseases
  • Health Sciences › Medicine › Surgery › Coronary Interventions and Diagnostics
Keywords
non-ST-elevation acute coronary syndrome, invasive strategy, adverse events, ACUITY trial, bivalirudin, glycoprotein IIb/IIIa inhibitors, heparin, percutaneous coronary intervention, drug-eluting stents, myocardial infarction, mortality
MeSH terms
Aged, Anticoagulants, Coronary Artery Bypass, Drug Therapy, Combination, Female, Humans, Male, Middle Aged, Myocardial Infarction, Platelet Aggregation Inhibitors, Risk Factors, Time Factors, United States, Treatment Outcome, Acute Coronary Syndrome, Healthcare Disparities, Drug-Eluting Stents, Percutaneous Coronary Intervention

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