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Updated: Aug 8, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
[Treatment of life-threatening arrhythmias in patients with chronic heart failure]
Masato Murakami1, Kazufumi Nakamura, Tohru Ohe
1Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine and Dentistry.
Insights
Implantable cardioverter-defibrillators (ICDs) improve heart failure prognosis more than amiodarone. Catheter ablation may offer benefits by preventing life-threatening arrhythmias, potentially improving patient quality of life.
Area of Science:
- Cardiology
- Electrophysiology
Context:
- Heart failure management includes therapies like beta-blockers and ACE inhibitors to prevent sudden cardiac death.
- Amiodarone and implantable cardioverter-defibrillators (ICDs) are specifically used to prevent sudden death from life-threatening arrhythmias.
Purpose:
- To compare the efficacy of amiodarone versus ICD therapy in improving the prognosis of heart failure patients.
- To explore the potential role of catheter ablation in preventing life-threatening arrhythmias and improving quality of life.
Summary:
- Large-scale clinical trials demonstrate that ICD therapy offers superior prognostic benefits for heart failure patients compared to amiodarone.
- ICDs do not prevent the occurrence of ventricular arrhythmias, thus their impact on patient quality of life may be limited.
Impact:
- ICD therapy is a more effective strategy than amiodarone for improving heart failure patient outcomes.
- Catheter ablation presents a potential alternative or adjunctive therapy for managing life-threatening arrhythmias and enhancing quality of life in heart failure.
Abstract:
Several proven medical therapies such as beta-blockers and angiotensin converting enzyme inhibitors play important roles in preventing sudden death of patients with heart failure. Therapy with amiodarone and therapy with implantable cardioverter defibrillator (ICD) have developed specifically to prevent sudden death by life-threatening arrhythmias. But recently many large-scale clinical trials have proved that ICD therapy improves prognosis of patients with heart failure better than amiodarone therapy. Because ICD is not a treatment to prevent the occurrence of ventricular arrhythmias, it may not necessarily improve quality of life of patients. In that respect catheter ablation may play a role in preventing life-threatening arrhythmias.
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