Related Experiment Video

Updated: Aug 15, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
23:33

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

Published on: February 28, 2012

Antithrombotic drugs for secondary stroke prophylaxis

L C Pettigrew1

  • 1Sanders-Brown Center on Aging, Department of Neurology, University of Kentucky College of Medicine, Lexington 40536-0230, USA. cpettigrew@aging.coa.uky.edu

Pharmacotherapy
|April 20, 2001
PubMed

Insights

Aspirin and extended-release dipyridamole combination therapy significantly reduces the risk of a second stroke. This combination offers a safer and more effective first-line prevention strategy compared to aspirin alone.

Area of Science:

  • Neurology
  • Cardiology
  • Pharmacology

Background:

  • Stroke is a leading cause of death and disability in the United States.
  • Antithrombotic agents are crucial for preventing recurrent strokes.
  • Aspirin is a common initial therapy, but alternatives are needed.

Purpose of the Study:

  • To evaluate the efficacy and safety of combining aspirin with extended-release dipyridamole for secondary stroke prevention.
  • To compare this combination therapy against aspirin monotherapy.

Main Methods:

  • Review of existing studies on antithrombotic agents for stroke prevention.
  • Analysis of clinical trial data comparing combination therapy with monotherapy.

Main Results:

  • The combination of aspirin and extended-release dipyridamole demonstrated a 2-fold increase in risk reduction for a second stroke compared to aspirin alone.
  • This combination therapy showed a favorable safety profile.

Conclusions:

  • Aspirin and extended-release dipyridamole combination therapy is a highly effective first-line strategy for secondary stroke prevention.
  • This combination offers improved efficacy and safety over aspirin monotherapy.

More Related Videos

Prehospital Thrombolysis: A Manual from Berlin05:52

Prehospital Thrombolysis: A Manual from Berlin

Published on: November 26, 2013

A Fibrin-Enriched and tPA-Sensitive Photothrombotic Stroke Model09:42

A Fibrin-Enriched and tPA-Sensitive Photothrombotic Stroke Model

Published on: June 4, 2021

Related Concept Videos

Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants

Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...