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Updated: Jul 25, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Atrial Fibrillation and Chronic Coronary Ischemia: A Challenging Vicious Circle
Alexandru Florinel Oancea1,2, Raul Alexandru Jigoranu1,2, Paula Cristina Morariu1,3
1Department of Internal Medicine, Faculty of Medicine, University of Medicine and Pharmacy Grigore T. Popa, 700115 Iasi, Romania.
Insights
Atrial fibrillation and chronic coronary syndrome share a bidirectional relationship, worsening each other. Managing shared risk factors and employing targeted therapies are crucial for patient prognosis.
Area of Science:
- Cardiology
- Internal Medicine
Background:
- Atrial fibrillation is a common arrhythmia.
- Chronic coronary syndrome involves coronary ischemia.
- These conditions have a complex, dual relationship.
Purpose of the Study:
- To explore the intricate relationship between atrial fibrillation and chronic coronary syndrome.
- To identify shared risk factors and pathophysiological mechanisms.
- To discuss therapeutic strategies for managing this dual condition.
Main Methods:
- Literature review of existing studies on atrial fibrillation and coronary artery disease.
- Analysis of pathophysiological links, including atherosclerosis and myocardial oxygen supply-demand mismatch.
- Examination of common risk factors like hypertension, obesity, diabetes, and dyslipidemia.
Main Results:
- Atrial fibrillation can exacerbate coronary ischemia by increasing myocardial oxygen demand and accelerating atherosclerosis.
- Chronic coronary syndrome can promote atrial fibrillation through altered cardiac conduction and ectopic activity.
- Shared risk factors significantly contribute to the development and progression of both conditions.
Conclusions:
- Breaking the vicious cycle requires comprehensive management of shared risk factors.
- Pharmacological therapies, including antithrombotic strategies, need careful consideration of risks.
- Interventional treatments like revascularization and catheter ablation are vital therapeutic options.
Abstract:
Atrial fibrillation, the most frequent arrhythmia in clinical practice and chronic coronary syndrome, is one of the forms of coronary ischemia to have a strong dual relationship. Atrial fibrillation may accelerate atherosclerosis and may increase oxygen consumption in the myocardium, creating a mismatch between supply and demand, thus promoting the development or worsening of coronary ischemia. Chronic coronary syndrome alters the structure and function of gap junction proteins, affecting the conduction of action potential and leading to ischemic necrosis of cardiomyocytes and their replacement with fibrous tissue, in this way sustaining the focal ectopic activity in atrial myocardium. They have many risk factors in common, such as hypertension, obesity, type 2 diabetes mellitus, and dyslipidemia. It is vital for the prognosis of patients to break this vicious circle by controlling risk factors, drug therapies, of which antithrombotic therapy may sometimes be challenging in terms of prothrombotic and bleeding risk, and interventional therapies (revascularization and catheter ablation).
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