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Published on: February 20, 2019
[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.
Abstract:
Dual antithrombotic therapy (DAT) with low-dose rivaroxaban in combination with acetylsalicylic acid (ASA) is available to patients with stable atherosclerotic disease as a new therapeutic option.The results of the COMPASS trial demonstrate a significant relative risk reduction of cardiovascular outcomes by 24 % with low-dose DAT in patients with stable peripheral arterial disease or coronary heart disease.Despite a guideline adherent secondary prevention therapy, the cardiovascular event rate with ASA alone during the mean study period of almost two years was 5.4 %. The absolute reduction of the event rate by the low-dose DAT is low at 1.3 %. Consequently, it is important to identify groups of patients at high risk for cardiovascular events. These patients are particularly qualified to receive a DAT regimen and can be characterized using high-risk features.The individual ischemic risk profile may be further defined by the presence of polyvascular atherosclerosis, concomitant diseases, and ischemic events in the past. The quo ad vitam reduced prognosis of patients with polyvascular atherosclerosis advocates a polyvascular screening, even in supposedly stable patients with coronary heart disease and peripheral arterial disease.An intensification of antithrombotic therapy is naturally associated with an increased risk of bleeding. Therefore, the risk-reduction of ischemic events should be weighed individually against the risk of bleeding.A low-dose DAT is particularly suitable for patients with a high ischemic risk and a low risk of bleeding.
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