[Advances in the secondary prevention of cardioembolic stroke]

Jaime Masjuan1

  • 1Unidad de Ictus, Servicio de Neurología, Hospital Universitario Ramón y Cajal, Madrid, España. jmasjuan.hrc@salud.madrid.org

Medicina Clinica
|March 19, 2013
PubMed

Insights

New oral anticoagulants offer a safer and more effective alternative to traditional warfarin for preventing strokes in patients with non-valvular atrial fibrillation (NVAF). These novel drugs are suitable for secondary stroke prevention in high-risk NVAF patients.

Area of Science:

  • Cardiology
  • Neurology
  • Pharmacology

Background:

  • Non-valvular atrial fibrillation (NVAF) is a primary cause of cardioembolic stroke.
  • Traditional oral antivitamin-K anticoagulants (AVK) are effective but underused due to drawbacks.
  • Recent advancements introduced novel oral anticoagulants (NOACs) with improved safety and efficacy profiles.

Purpose of the Study:

  • To evaluate the efficacy and safety of NOACs compared to AVK in stroke prevention for NVAF patients.
  • To assess the role of NOACs in secondary stroke prevention, particularly in high-risk populations.
  • To explore alternative treatments for NVAF patients with contraindications to anticoagulant therapy.

Main Methods:

  • Analysis of clinical trial data comparing rivaroxaban, dabigatran, and apixaban against warfarin.
  • Inclusion of substudy data from patients with a history of stroke.
  • Review of studies focusing on patients at high risk for hemorrhagic and embolic events.

Main Results:

  • NOACs demonstrated comparable or superior safety and efficacy to AVK in the overall NVAF population.
  • Substudy results in patients with prior stroke were consistent with overall study findings.
  • NOACs represent a viable alternative to AVK for secondary stroke prevention in NVAF.

Conclusions:

  • Novel oral anticoagulants are a feasible and effective alternative to AVK for secondary stroke prevention in non-valvular atrial fibrillation.
  • Percutaneous closure of the left atrial appendage is a potential alternative when anticoagulant therapy is contraindicated.
  • These findings support the expanded use of NOACs in managing NVAF to reduce stroke risk.

Related Concept Videos

Coronary Artery Disease IV: Preventive Measures01:26

Coronary Artery Disease IV: Preventive Measures

Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
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...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...
Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
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...