Copyright © 2001 by the European Society of Cardiology.
Late clinical outcome after successful radiofrequency catheter ablation of accessory pathways
Division of Cardiology, University Hospital, Lausanne, Switzerland
revised August 1, 2000; accepted August 2, 2000
Abstract
Aims To evaluate the long-term clinical results of patients who underwent successful radiofrequency catheter ablation of a symptomatic drug-resistant accessory-pathway-mediated tachycardia.
Methods and Results Clinical follow-up was done by direct contact with the patients and their physicians. One hundred and eighty consecutive patients (113 males, 67 females) were followed during a median period of 48·1 months. There were seven procedure related complications (4%). During the follow-up period, 79% of the patients remained asymptomatic; 14% complained of short bouts of palpitations due to isolated or short runs of atrial or ventricular premature beats; 7% had sustained palpitations due either to accessory pathway recurrence (4%) or supraventricular tachyarrhythmias not associated with an accessory pathway (3%). Symptoms due to accessory pathway recurrence appeared either in the first month following the ablation or at least later than 3 months when sustained supraventricular arrhythmias occurred related to another cause.
Conclusions Initially successful radiofrequency catheter ablation has a low, long-term recurrence rate (4%). Recurrence of accessory-pathway-mediated tachycardia is observed during the first month while later symptoms suggest supraventricular arrhythmias from another cause.
Key Words: Radiofrequency ablation, accessory pathway, follow-up
f1 Correspondence: J. Schläpfer, MD, Division of Cardiology, University Hospital, 1011 Lausanne, Switzerland.
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