© 2005 The European Society of Cardiology. Published by Elsevier Ltd. All rights reserved.
CASE REPORT
Atrial fibrillation triggered by postinfarction ventricular premature beats in a patient with WolffParkinsonWhite syndrome
Unidad de Arritmias y Electrofisiología, Hospital Universitario "La Paz", Universidad Autónoma Madrid, Spain
The mechanism by which atrial fibrillation is initiated in patients with accessory pathways is not fully understood. Retrograde conduction of ventricular premature beats to the atrium, causing the arrhythmia, is a very rare cause. We report a patient with WolffParkinsonWhite syndrome (WPW), without previous tachycardias, who presented multiple episodes of paroxysmal atrial fibrillation after having a myocardial infarction. During the electrophysiological (EP) study the patient presented two spontaneous episodes of atrial fibrillation initiated by ventricular premature beats conducted to the atria through the accessory pathway. After successful catheter ablation of the accessory pathway the patient did not present arrhythmia recurrences.
Key Words: WolffParkinsonWhite syndrome, atrial fibrillation, ventricular premature beats, catheter ablation
*Corresponding author. Unidad de Arritmias, U.M.Q. de Cardiología, Hospital Universitario "La Paz", Paseo de la Castellana 261, 28046 Madrid, Spain. Tel./fax: +34 91 727 7564. E-mail address: rpeinado{at}secardiologia.es (R. Peinado).
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