External applicability of the COMPASS trial: the Western Denmark Heart Registry

Morten Würtz1,2, Kevin Kris Warnakula Olesen1,3, Troels Thim1

  • 1Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK Aarhus, Denmark.

Insights

In a study of patients undergoing coronary angiography, only 15% met criteria for combined aspirin and rivaroxaban treatment. These eligible patients experienced significantly higher cardiovascular event rates, indicating an unmet need for better prevention strategies.

Area of Science:

  • Cardiovascular Medicine
  • Clinical Trials
  • Epidemiology

Background:

  • The COMPASS trial demonstrated benefits of combined aspirin and rivaroxaban for ischemic events in stable coronary artery disease (CAD) or peripheral artery disease (PAD).
  • Determining the proportion of patients eligible for this treatment in real-world settings is crucial for understanding its potential impact.

Purpose of the Study:

  • To estimate the prevalence of COMPASS-eligible patients among unselected individuals undergoing coronary angiography (CAG).
  • To compare cardiovascular event rates between COMPASS-eligible and non-eligible patients with CAD/PAD.

Main Methods:

  • A cohort of 80,071 patients undergoing CAG in Western Denmark (2004-2011) was analyzed.
  • COMPASS eligibility criteria were applied to identify patients with CAD/PAD who met inclusion criteria.
  • Primary endpoint (cardiovascular death, ischemic stroke, hemorrhagic stroke, myocardial infarction) rates were compared using adjusted incidence rate ratios (aIRRs).

Main Results:

  • Of 52,132 patients with CAD/PAD, 11,930 (approximately 23%) were COMPASS eligible.
  • COMPASS eligible patients had a 1.7-fold higher rate of the primary endpoint compared to non-eligible patients.
  • Higher risks were observed for cardiovascular death (aIRR 2.5), ischemic stroke (aIRR 1.4), and myocardial infarction (aIRR 1.9) in eligible patients.

Conclusions:

  • Only 15% of the studied 'all-comers' CAG cohort were eligible for the COMPASS treatment regimen.
  • COMPASS-eligible patients exhibited substantially higher rates of cardiovascular events, up to 2.5 times greater than non-eligible counterparts.
  • These findings underscore an unmet need for enhanced preventive strategies in high-risk cardiovascular patients.
Abstract

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