Related Experiment Video
Updated: Mar 22, 2026
23:33
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
84.7K
Atrial Fibrillation and Stroke: Increasing Stroke Risk with Intervention
Christopher V DeSimone1, Malini Madhavan1, Elisa Ebrille2
1Division of Cardiovascular Diseases, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
Cardiac Electrophysiology Clinics
|April 12, 2016
Summary
Atrial fibrillation (AF) ablation may paradoxically increase stroke risk. This review explores silent cerebral lesions and strategies to minimize risks associated with AF interventions.
Area of Science:
- Cardiology
- Neurology
- Vascular Medicine
Background:
- Atrial fibrillation (AF) is a common arrhythmia associated with increased stroke risk.
- Interventions like AF ablation aim to reduce long-term stroke risk.
- A paradoxical increase in stroke and transient ischemic attack (TIA) has been observed post-intervention.
Purpose of the Study:
- To highlight the newly recognized paradoxical increase in stroke/TIA after AF interventions.
- To discuss the impact of silent cerebral lesions as a limitation.
- To explain current understanding of AF ablation risks and minimization strategies.
Main Methods:
- Review of recent studies on AF ablation outcomes.
- Analysis of the role of silent cerebral lesions.
- Examination of procedural modifications and vascular-based strategies.
Main Results:
- Silent cerebral lesions are a significant factor in post-ablation neurological events.
- Understanding the mechanisms of paradoxical stroke increase is evolving.
- Newer studies and procedural changes aim to mitigate these risks.
Conclusions:
- AF ablation carries inherent risks, including paradoxical stroke events.
- Minimizing silent cerebral lesion formation is crucial for patient safety.
- Further research into vascular-based stroke reduction is warranted.
Related Concept Videos
01:29Venous Thrombosis III: Interprofessional Care
459
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...
459
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
2.3K
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...
2.3K
01:18Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
2.7K
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...
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...
2.7K
01:25Dysrhythmias VI: Management of Dysrhythmias
610
Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
610
01:26Atherosclerosis III: Management
573
Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
573
01:29Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
633
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...
633