[Dual Pathway Inhibition in Atherosclerosis - Which Patients Benefit?]

David Hardung1, Andrea Behne1, Ralf Langhoff1

  • 1Abteilung Angiologie, Sankt Gertrauden-Krankenhaus GmbH, Berlin, Akademisches Lehrkrankenhaus der Charité - Universitätsmedizin Berlin.

Insights

Dual antithrombotic therapy (DAT) combining low-dose rivaroxaban and aspirin significantly reduces cardiovascular events in stable atherosclerotic disease patients. Identifying high-risk individuals is crucial for optimizing this therapy.

Area of Science:

  • Cardiology
  • Vascular Medicine
  • Pharmacology

Background:

  • Dual antithrombotic therapy (DAT) with low-dose rivaroxaban and aspirin (ASA) offers a new option for stable atherosclerotic disease.
  • Despite guideline-adherent secondary prevention, cardiovascular events remain significant with ASA alone.

Purpose of the Study:

  • To evaluate the efficacy and safety of low-dose DAT in patients with stable peripheral arterial disease (PAD) or coronary heart disease (CHD).
  • To identify patient subgroups who benefit most from DAT by assessing high-risk features.

Main Methods:

  • Analysis of the COMPASS trial data.
  • Inclusion of patients with stable PAD or CHD receiving standard secondary prevention.
  • Assessment of cardiovascular outcomes and bleeding events.

Main Results:

  • Low-dose DAT reduced the relative risk of cardiovascular outcomes by 24% compared to ASA alone.
  • The absolute risk reduction was 1.3%, with a baseline event rate of 5.4% with ASA.
  • High-risk features like polyvascular atherosclerosis, comorbidities, and prior events define patients who benefit most.

Conclusions:

  • Low-dose DAT is effective in reducing ischemic events in high-risk patients with stable PAD or CHD.
  • Individual risk-benefit assessment is essential, weighing ischemic risk reduction against bleeding risk.
  • Polyvascular screening is recommended, even in seemingly stable patients, to identify candidates for DAT.

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