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[Preexcitation syndrome].
1Third Department of Internal Medicine, Toho University, Ohashi Hospital.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|July 26, 2002
Summary
Atrial fibrillation in Wolff-Parkinson-White (WPW) syndrome can be fatal due to rapid ventricular response. Immediate treatment with cardioversion, antiarrhythmic drugs, or radiofrequency ablation is crucial to prevent sudden cardiac death.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Science
Context:
- Wolff-Parkinson-White (WPW) syndrome involves accessory electrical pathways in the heart.
- Atrial fibrillation in WPW patients presents a significant risk of life-threatening ventricular arrhythmias.
- The incidence of sudden cardiac death in WPW syndrome ranges from 0% to 0.6%.
Purpose:
- To highlight the critical risks associated with atrial fibrillation in WPW syndrome.
- To emphasize the importance of immediate intervention for atrial fibrillation in WPW patients.
- To discuss effective treatment strategies for preventing ventricular fibrillation.
Summary:
- Atrial fibrillation in WPW syndrome can precipitate ventricular fibrillation due to rapid ventricular response through accessory pathways with short refractory periods.
- Immediate termination of atrial fibrillation via direct current cardioversion or intravenous antiarrhythmic drugs (especially sodium channel blockers) is recommended.
- Radiofrequency catheter ablation of accessory pathways is a primary treatment to prevent ventricular fibrillation.
Impact:
- Prompt management of atrial fibrillation in WPW syndrome can significantly reduce the risk of sudden cardiac death.
- Understanding the pathophysiology aids in timely and appropriate clinical decision-making.
- Radiofrequency ablation offers a definitive solution for preventing recurrent life-threatening arrhythmias in WPW patients.