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Updated: Apr 5, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Device therapy for acute systolic heart failure and atrial fibrillation
Steven K Carlson1, Rahul N Doshi1
1Department of Internal Medicine, Division of Cardiovascular Medicine, Keck School of Medicine of University of Southern California, 1510 San Pablo Street, Suite 322, Los Angeles, CA 90033, USA.
Insights
Newly diagnosed cardiomyopathy requires thorough evaluation before defibrillator implantation. For refractory atrial fibrillation and cardiomyopathy, atrioventricular node ablation with biventricular pacing is preferred for tachycardia-induced cardiomyopathy.
Area of Science:
- Cardiology
- Electrophysiology
- Heart Failure Management
Background:
- Cardiomyopathy necessitates comprehensive etiological assessment and timely treatment initiation.
- Internal cardiac defibrillators (ICDs) are considered after initial management strategies.
- Medicine-refractory atrial fibrillation complicates cardiomyopathy management.
Purpose of the Study:
- To outline the management approach for newly diagnosed cardiomyopathy.
- To identify optimal therapy for patients with cardiomyopathy and refractory atrial fibrillation.
- To address the specific case of tachycardia-induced cardiomyopathy unresponsive to curative treatment.
Main Methods:
- Clinical assessment of cardiomyopathy etiology.
- Evaluation of treatment response to standard medical therapy.
- Consideration of advanced interventions for refractory arrhythmias and heart failure.
Main Results:
- Initial management focuses on cause identification and treatment before ICD consideration.
- Atrioventricular node ablation combined with biventricular pacemaker implantation is effective.
- This combined therapy is the preferred approach for tachycardia-induced cardiomyopathy when curative options fail.
Conclusions:
- Careful patient selection and assessment are crucial for cardiomyopathy treatment.
- Biventricular pacing and AV node ablation offer a viable solution for specific complex cases.
- This strategy improves outcomes in patients with cardiomyopathy and refractory atrial fibrillation.
Abstract:
Patients with newly diagnosed cardiomyopathy require careful assessment of cause and initiation of treatment before the decision is made to implant an internal cardiac defibrillator. In patients with medicine-refractory atrial fibrillation and cardiomyopathy, atrioventricular node ablation and implantation of a biventricular pacemaker is the therapy of choice when tachycardia-induced cardiomyopathy is suspected and curative therapy is not possible.
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