When are the cardiovascular and stroke risks too high? Pharmacotherapy for stroke prophylaxis
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Published on: February 7, 2025
Antonio Gómez-Outes1, Mª Luisa Suárez-Gea1, Jose Manuel García-Pinilla2,3
1a Division of Pharmacology and Clinical Drug Evaluation, Medicines for Human Use , Spanish Agency for Medicines and Medical Devices (AEMPS) , Madrid , Spain.
Insights
Cardioembolic stroke, often linked to atrial fibrillation (AF), carries a high risk. This review details stroke risk scores and antithrombotic therapy recommendations for AF patients to guide treatment decisions.
Area of Science:
- Cardiology
- Neurology
- Clinical Risk Assessment
Background:
- Stroke is a leading cause of death and disability globally.
- Cardioembolic strokes, frequently associated with atrial fibrillation (AF), present a poorer prognosis and higher recurrence rates.
- Effective risk stratification is crucial for managing stroke, particularly in AF patients.
Purpose of the Study:
- To review general and AF-specific scores for assessing cardiovascular and stroke risks.
- To summarize current recommendations for antithrombotic therapy in stroke prevention.
- To aid clinical decision-making in identifying patients who require specific interventions.
Main Methods:
- Literature review of stroke risk assessment scores.
- Analysis of scores applicable to atrial fibrillation (AF) patients.
- Synthesis of evidence regarding antithrombotic treatment guidelines.
Main Results:
- Various risk scores aid in identifying factors necessitating medical intervention.
- Integrated risk scores with visual aids can enhance clinical decision-making.
- Patients with prior stroke/TIA require antiplatelet or anticoagulant therapy based on stroke type.
Conclusions:
- Risk stratification scores are vital for guiding stroke prevention strategies.
- Anticoagulation is recommended for primary stroke prevention in AF patients with additional risk factors.
- Tailored antithrombotic therapy is essential for managing cardioembolic stroke risk.
Introduction:
Stroke is a significant source of morbidity and mortality in developed countries. Cardioembolic strokes represent approximately 15-30% of all ischemic strokes. They are frequently related to atrial fibrillation (AF) and have a worse prognosis and high recurrence rates when compared to other causes (e.g. atherosclerosis).
Areas Covered:
This review includes a summary of general and specific scores to assess cardiovascular and stroke risks, with a focus on specific scores available in AF. Recommendations for antithrombotic therapy are also reviewed.
Expert Opinion:
Several scores are available for the evaluation of stroke risk. They are useful to identify the risk factors that trigger the need for medical interventions. Integrated risk scores with visual interfaces showing the risk of events, with and without the proposed interventions, can aid decision-making. The risk of stroke can definitely be considered too high in those patients with a history of stroke/transient ischemic attack, who need antiplatelet therapy (after a non-cardioembolic stroke) or anticoagulant therapy (after a cardioembolic stroke). For primary prevention of stroke, antiplatelet therapy is not usually recommended, while anticoagulation should be considered if the patient has concomitant AF and at least one additional risk factor unrelated to sex.
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