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Updated: Aug 16, 2025

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Atrial fibrillation and stroke
Sylvia E Choi1,2, Dimitrios Sagris1,3, Andrew Hill1,4
1Liverpool Centre for Cardiovascular Science at University of Liverpool, Liverpool John Moores University and Liverpool Heart & Chest Hospital, Liverpool, UK.
Insights
Atrial fibrillation (AF) significantly increases stroke risk, often leading to severe outcomes. Oral anticoagulation helps, but AF remains a key factor in many unexplained strokes, necessitating further research and integrated care.
Area of Science:
- Cardiology
- Neurology
- Public Health
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia with a five-fold increased risk of stroke.
- AF-related strokes are frequently fatal or disabling, posing a significant global health burden.
- AF contributes to a substantial portion of cryptogenic strokes, where the cause is unclear.
Approach:
- This review synthesizes current literature on the relationship between AF and stroke.
- It explores pathophysiological mechanisms linking AF to thrombogenesis and stroke.
- The review covers diagnostic strategies and management approaches for AF in stroke patients.
Key Points:
- The pathophysiology connecting AF and stroke requires further elucidation to develop novel therapeutic targets.
- Integrated care models are crucial for managing the complex interplay of AF and stroke.
- Identifying and managing AF is vital for reducing stroke incidence and improving patient outcomes.
Conclusions:
- AF represents a major, modifiable risk factor for stroke.
- Understanding the pathophysiology of AF-related thrombogenesis is critical for prevention.
- Comprehensive management strategies, including early diagnosis and integrated care, are essential for mitigating the impact of AF on stroke.
Introduction:
Stroke is one of the leading causes of mortality and morbidity globally. Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. It is set to reach epidemic proportions. AF is associated with a five-fold increase in risk of stroke. Strokes caused by AF more often are fatal or result in severe disability. Even though the incidence of stroke has been significantly reduced by oral anticoagulation, AF is thought to account for a significant proportion of cryptogenic strokes where no etiology is identified.
Areas Covered:
This article reviews the literature related to AF and stroke, pathophysiological insights, diagnosis of AF in stroke patients, and its management (Graphical Abstract).
Expert Opinion:
The pathophysiology of thrombogenesis that links AF and stroke is not well understood and is an area of active research to identify new therapeutic targets to prevent AF and stroke. As the nature of AF and stroke is multifaceted, an integrated care approach to managing AF and stroke is increasingly essential.
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